These tree-like projections are called Mycorrhizae. These are symbiotic associations between plants and fungi. Their major role is to amplify nutrient and water takeup by the host plant by utilizing a larger volume of soil than roots alone can do.
Mycorrhizae come in several forms, dependent upon both host plant and fungal taxonomy. The distribution of these forms in ecosystems is related to host plant distribution and climatic and soil conditions. The ability of mycorrhizae to improve host plant nutrient and water acquisition and to help in the defence of root pathogens and root grazing can alter the host plant's performance.
Mycorrhizae are being used in agriculture, forestry, and restoration to improve yields and overcome some of the pollutants associated with plantings on disturbed sites. The ability of mycorrhizal fungi to accumulate heavy metals makes them possible candidates for the restoration and remediation of polluted environments.
Mycorrhizae can be advantageous to crops grown in soils with low nutrient supply. Mycorrhizal associations can lead to increased nutrient concentrations in plant tissue, particularly nutrients (e.g., P and Zn) which are contigent on diffusion toward roots for uptake. Therefore, the management of mycorrhizae is becoming a potential method for crop nutrient management.
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among the agta of the philippines, women not only gather, they also a. fish, while carrying their babies with them. b. are the primary warrior class, except when pregnant or breastfeeding. c. cultivate small food plots inside village defenses. d. hunt small animals and do some fishing. e. are the tribal leaders.
The Aeta are a nomadic people that only construct ad hoc, stick-and-leaf huts that are draped with palm leaves.Aeta communities and places with cleared mountains are now home to the more advanced Aetas.They reside in homes made of cogon grass and bamboo.
Describe about agta people?
The indigenous population of the nation has steadily declined due to mining, deforestation, illicit logging, and slash-and-burn farming, now numbering only a few thousand people.The Aeta have become very nomadic as a result of social and economic pressures on their culture and way of life, which had previously stayed constant for thousands of years, and the Philippine government offers them little to no protection. As hunter-gatherers, adaptation plays an important role in Aeta communities to survive. This often includes gaining knowledge about the tropical forest that they live in, the typhoon cycles that travel through their area, and other seasonal weather changes that affect the behavior of the flora and fauna in their location.Another important survival skill is storytelling. Like many other hunter-gatherer societies, the Aeta promote social values, such as cooperation, through stories. Thus, they highly value skilled storytellers.Aeta hunters, as depicted in the Boxer Codex (c. 1595).For many Aeta communities, the dry season means hard work.With the beginning of the dry season comes more hunting and fishing as well as swiddening the land in preparation for future harvest.Men and women in the Aeta community work together to clear the land, but women typically harvest the majority of the crops.They also conduct commerce with non-Aeta communities in the area at this time, either to sell the food they have collected or to hire them as temporary farmers or field workers.Women from the Aeta community participate more actively in economic dealings with non-Aeta communities, typically as dealers and field laborers for lowland farmersDifferent implements are used by Aeta cultures for hunting and gathering.Traps, knives, and bows and arrows with various arrow points for specific uses are examples of traditional tools.The majority of Aetas, including Aeta women, begin training for hunting and gathering at age 15.Most Aeta women prefer knives and frequently hunt with their dogs and in groups to maximize efficiency and for social purposes, whereas males and some women typically use the conventional bow and arrow.Males and females both engage in food collecting and fishing.Therefore, Aeta societies are more gender equal in both organization and practice.To learn more about philippines culture refer
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despite its name, kentucky bluegrass is a widespread turfgrass used for lawns throughout the united states. in some regions, strains have developed desirable disease-resistant properties. however, kentucky bluegrass typically develops by apomixis. plant breeders say this creates both a challenge and an opportunity for engineering novel strains. why?
If a seed develops by apomixis, it will be identical to its parent.
In order to hybridize with another strain, specific procedures are needed. However, apomixis assures the reliable multiplication of a hybrid strain once it has been created. A perennial, cool-season lawn grass is what is referred to as Kentucky bluegrass.
This indicates that it returns each year and grows most actively in the chilly months of fall and spring. Asexual reproduction without fertilization is known as apomixis in botany. Greek for "aside from" and "mixing" make up its origins.
Notably, meiosis is not included in this definition. As a result, "natural asexual reproduction" of plants, such as growth from cuttings or leaves, has never been thought of as apomixis; nevertheless, the replacement of the seed by a plantlet or the replacement of the flower by bulbils were both recognized as kinds of apomixis. Offspring born by apomicticism share the same genetic makeup as their parent plant.
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True or False: Weather forecasting is an exact science? Meteorologists can pinpoint the exact location of a thunderstorm?
Answer: false
Explanation:
Though they can tell you the state and city it is hard to pinpoint the exact location. And weather normally changes closer to the day
the thymus is located in the , anterior to the aortic arch. the is very large in a child and will atrophy in advanced age. the is the largest of the lymphatic organs. a of connective tissue surrounds the spleen. the tiny islands (nodules) of tissue within the spleen that contain many lymphocytes constitute the pulp. the pulp of the spleen contains large numbers of red blood cells, lymphocytes, and macrophages. within the spleen engulf and destroy foreign particles and cellular debris. the lymphoid organs in the pharynx (throat) that are possible infection sites are collectively called the .
(1)mediastinum (2)thymus (3)spleen (4)capsule (5)white (6)red (7)macrophages (8)tonsils.
What are examples of connective tissue?The more specialized and recognized variations—bone, ligaments, tendons, cartilage, and adipose (fat) tissue—as well as a variety of fibrous tissue types that differ only in density and cellularity are included in the connective tissues.
Where in the body is connective tissue found?The walls of big blood arteries, elastic cartilages, yellow ligaments, the lungs, and the skin are where they are most commonly found. Different forms of connective tissue are produced by variations in the layouts and combinations of cells and protein fibers. Connective tissues store fat, move substances, ward off sickness, and assist in tissue healing in addition to binding structures together and supporting the body as a whole as well as the organs and individual organs. They are everywhere on the body.
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The complete question is -
(1)The thymus is located in the ____________, anterior to the aortic arch
(2)The _________ is very large in a child and will atrophy in advanced age
(3)The _________ is the largest of the lymphatic organs
(4)A _________ of connective tissue surrounds the spleen
(5)The tiny islands (nodules) of tissue within the spleen that contain many lymphocytes constitute the ______ pulp.
(6)the _________ pulp of the spleen contains large numbers of red blood cells, lymphocytes, and macrophages
(7)___________ within the spleen engulf and destroy foreign particles and cellular debris.
(8)The lymphoid organs in the pharynx (throat) that are possible infection sites are collectively called _________
Explain how the nitrogen cycle is supported by the law of conservation of matter.
During the nitrogen cycle, nitrogen atoms are neither created nor destroyed nor transformed into other atoms.
During the nitrogen cycle, nitrogen atoms are neither created nor destroyed nor transformed into other atoms. This can be explained by the law of conservation of matter. This law states that matter cannot be created or destroyed by any chemical or physical process.
NitrificationDuring nitrification, ammonia is first converted to nitrite and then to nitrate by certain bacteria.
AmmonificationAmmonification is the process by which proteins and amino acids are broken down to release ammonia, usually in the form of ammonium ions. Ammonia is then converted to nitrogen and the cycle continues.
AssimilationAssimilation is the process by which plants and animals use and incorporate nitrogen and ammonia previously produced by nitrogen fixation and nitrification.
DenitrificationDenitrification is the conversion of nitrate (NO3) to gas (N2) by anaerobic bacteria. Denitrification usually occurs only when little or no oxygen is present.
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How is an inference different from a hypothesis?
A. An inference can be made only using direct observation, while a
hypothesis can use predictions and reasoning.
B. An inference is based on scientific evidence, while a hypothesis is
based on an untestable guess.
C. An inference uses reasoning to explain what happened, while a
hypothesis uses reasoning to predict what may happen in the
future.
D. An inference is made before an investigation begins, while a
hypothesis is made after the evidence is collected.
A is the correct answer because you can inference things by just looking at them, while a hypothesis usually has to do with research and reasoning.
Answer:
c
Explanation: got it in aipex
An object displaces 7.1 ml of water. If the mass of the
object is 4 grams, what is the density?
Answer: D = 0.56 g/ml
Explanation:
We can use the density equation for this one.
D = m / v
We are given Mass (m) and Volume (v).
D = 4g / 7.1 ml
D = 0.56 g/ml
What is the name of the enzyme that some viruses use to turn their RNA into DNA?
Answer:
The answer is C, Reverse transcriptase
Explanation:
It is an enzyme encoded from the genetic material of retroviruses that catalyzes the transcription of retrovirus RNA (ribonucleic acid) into DNA (deoxyribonucleic acid).
The name of the enzyme that viruses use to turn their RNA into DNA is c) Reverse Transcriptase
The DNA polymerase enzyme reverse transcriptase (RT), also referred to as RNA-dependent DNA polymerase, converts single-stranded RNA into DNA. Once the RNA has been reverse-transcribed in the first step into a single-strand DNA, this enzyme can create a double helix DNA.
Reverse transcriptases are utilized by eukaryotic cells to lengthen the telomeres at the ends of their linear chromosomes, by retrotransposon mobile genetic elements to multiply inside the host genome, and by viruses like HIV, Corona Virus, and hepatitis B to duplicate their genomes.
So, viruses use Reverse Transcriptase to turn their RNA into DNA.
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a chain of repeating monomers to make a larger molecule
A chain of repeating monomers to make a larger molecule is called a Polymer.
Monomer-based compounds that combine to form polymers.
Large molecules known as polymers are constructed from single, comparable repeating components (monomers).
A polymer is made up of numerous monomers because the prefix poly- signifies "many" or "multi-."
Any of a group of organic or synthetic compounds known as polymers are made up of macromolecules, or very large molecules, which are just multiples of simpler chemical building blocks known as monomers. Numerous natural and man-made materials, as well as a large portion of the components in living things, are composed of polymers.
A polymer is created when many monomers are linked together. Polymers can be compared to a chain of interconnected paperclips in several ways. A polymer is a big molecule consisting of monomers, which are littler molecules bonded together.
Plastic is a subset of polymer since all plastics are polymers but not all polymers are plastic. Plastics are long-chain molecules created by large monomers while polymers are homogenous molecules created by small monomers. Plastics are manmade materials yet polymers can also be natural.
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a mutant allele is found to have a mutation in the -35 element of the promoter region. the mutation makes the -35 element more similar to the -35 consensus sequence. which term best describes this allele? group of answer choices
A mutant allele causing mutation in the -35 element of the promoter region and the mutation making the -35 element more similar to the -35-consensus sequence is termed hypermorphic.
Hypermorphic (genetics, of a mutation) causes an increase in otherwise normal gene function.
Hypermorphic alleles are pick up of work alleles. A hypermorph can result from an increment in quality measurements (a quality duplication), from expanded mRNA or protein expression, or from constitutive protein action.
The phenotype of a hypermorph is compounded by expanding the wildtype quality dosage and is decreased by bringing down the wildtype quality dose.
A change that decreases but doesn't kill a gene’s usefulness is hypomorphic. A more extreme condition, amorphic transformation, disposes of the gene’s work.
A hypomorph could be a diminishment in quality work through decreased (protein, RNA) expression or diminished useful execution, but not a total misfortune. The phenotype of a hypomorph is more serious in trans to an erasure allele than when homozygous.
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In glycolysis, a glucose molecule is split into two molecules of ______, and energy is harvested as atp and nadh.
In glycolysis, a glucose molecule is split into two molecules of pyruvate and energy is harvested as ATP and NADH.
Glycolysis is the process that can be characterized as the first stage of cellular respiration followed by the citric acid cycle and electron transport chain.
Cellular respiration is the process that occurs in the cells of the body to release energy from glucose derived from food molecules.
In the process of glycolysis, the glucose molecule is broken down into two pyruvate molecules by a series of complex processes. ATP and NADH is released in the process of glycolysis.
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s-oleone is structurally almost identical to a-oleone. when s-oleone is combined with the enzyme that normally breaks down a-oleone no products are formed, and the enzyme is no longer able to accept a-oleone. this suggests that
The enzyme then lets the product go after it has been created. Now that it has more reactants available, the enzyme is prepared to catalyze yet another reaction.
What is -oleone?An enzyme can be employed for other reactions after it has catalyzed a reaction and been released from its binding to a substrate.
The three phases of an enzyme-catalyzed reaction are: enzyme-substrate binding, "catalysis," and product release. They enable chemical processes to take place quickly enough to support life. Because they reduce the energy of activation—the energy required to make molecules react with one another—enzymes hasten the rate of chemical reactions. A substrate is anything that an enzyme typically reacts with.
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For which type of lesion would a bandage be most important in order to keep bacteria and other pathogens from entering the body?.
The type of lesion in which a bandage would be most important in order to keep bacteria and other pathogens from entering the body is an ulcer.
What is ulcer tissue damage?The expression ulcer tissue damage makes reference to open tissue associated with a painful sore. One of the most common types of ulcer is stomach ulcer, which is very harmful to the organism due to the release of acid gastric juices.
Generally, ulcers are caused by infections such as bacterial infections that are able to cause serious damage to the tissues and thus lead to painful sores in different organs of the body such as the stomach.
Therefore, with this data, we can see that ulcer tissue damage may be caused by different infections including bacterial infections and lead to painful sores that need to be cured by a bandage and or alternative procedures.
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It is important too so many trials in an experiment to…
Scientists employ replicated experiments and repeated trials to test hypotheses to ensure that they consistently arrive at the same conclusion and that the initial result wasn't just a lucky guess. They must be certain that the response to their theory is always exactly the same.
The scientist is better able to comprehend the results of the test when the conditions of the experiment are under control. It's not always possible to control every aspect of a test, especially when the hypothesis is being proved for the first time. A hypothesis may be tested by making predictions about patterns that should emerge if the theory is true, especially if conducting a controlled experiment is impractical or impossible for ethical reasons. The scientist gathers information from as many patterns as they can reasonably test or push to be tested. The principle supporting the hypothesis becomes stronger the more experiments the scientist does.When conducting tests, independent and dependent variables are used. Independent and dependent variables are present in an experiment involving two groups, such as when plants are given water on one set and none on the other. Because it is not dependent on chance, the group that receives water in this example is the independent variable. The water is deliberately applied by the scientist. The response that is examined in an experiment to determine if the treatment had any effect is known as the dependent variable. It depends on the independent variable since the lack of water on the group of plants demonstrates whether the scientist's application alters the result.To know more about Trials please click here : https://brainly.com/question/4559559
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which statement about hydrogen (h) atoms in photosynthesis and respiration is false? first exclude the four correct statements. group of answer choices photosynthesis and respiration both use h shuttles. h is removed from water to make sugars in photosynthesis; h removed from sugars is combined with oxygen to form water in respiration. nadh is used in photosynthesis; nadph is used in respiration. the o-h bond has partial electrical charges; the c-h bond consists of electrons shared evenly between the partner atoms. while the o-h bond cannot be used to release energy, the c-h bond can be used to release energy.
The process of producing glucose when carbon dioxide and water are present is called photosynthesis. The process of respiration involves the generation of carbon dioxide and water as a result of the breakdown of carbohydrates.
What is the relationship between photosynthesis and respiration?The glucose required to produce ATP during cellular respiration exists produced through photosynthesis. The carbon dioxide utilized in photosynthesis is then produced from the glucose. While during photosynthesis water is broken down to create oxygen, during cellular respiration oxygen is mixed with hydrogen to create water.
The process of producing glucose when carbon dioxide and water are present exists comprehended photosynthesis. The technique of respiration involves the generation of carbon dioxide and water as a result of the breakdown of carbohydrates.
Therefore, the correct answer is option c) NADH is used in photosynthesis; NADPH is used in respiration.
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Which phases can line up correctly to cause an eclipse to occur?
A solar eclipse occurs when the Moon comes between the Sun and Earth
What is an eclipse?When the Moon passes between the Sun and Earth, a solar eclipse occurs, emitting a shadow on Earth that either fully or partially blocks the Sun's light in some areas. This only happens sometimes, because the Moon doesn't orbit the same horizontal as the Sun and Earth do. A solar eclipse occurs when the moon gets between Earth and the sun, and the moon sends out a shadow over Earth. A solar eclipse can only happen during the new moon's phase when the moon passes directly between the sun and Earth and its shadows fall upon Earth's surface. Solar eclipses occur only at the new moon phase when the Moon is between Earth and the Sun. throughout a solar eclipse, the Moon casts a shadow on Earth, and blocks or partially blocks our view of the Sun.
So we can conclude that an eclipse of the Moon can only occur at Full Moon.
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An epidemiologist wants to figure out if the Flu vaccine is effective at lowering the likelihood of dying from the disease.
What are some controlled variables?
A
The death rate of unvaccinated individuals will be higher than vaccinated individuals.
B
The vaccine
C
The death rate
D
Age and pre-existing conditions
If an epidemiologist wants to figure out if the Flu vaccine is effective at lowering the likelihood of dying from the disease, then the controlled variables are age and pre-existing conditions (Option D).
What is a controlled experimental variable?A controlled experimental variable is any variable in the experimental treatment that remains the same in different groups in order to make a comparison with the target group.
Therefore, with this data, we can see that the controlled experimental variables are those that stay the same to make comparisons in a given experimental procedure.
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In an experiment to figure out if the Flu vaccine is effective at lowering the likelihood of dying from the disease, the controlled variable is: the death rate.
What is a control experiment?A control experiment simply refers to a type of experiment in which a condition assumed to be a probable cause of an effect is compared with the same situation without involving or using the suspected condition.
This ultimately implies that, all factors are held constant in a controlled experiment except for the independent variable.
In Science, a controlled variable must always be held constant and unchanged in an experiment in order to prevent it from affecting or influencing the result, which is what the death rate connotes in this scenario.
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during the digestion process, why are short-chain fatty acids more easily absorbed by the body? a. they are hydrophobic. b. they are somewhat water soluble. c. they contain bile. d. they convert to glycerol. e. they have formed chylomicrons
During the digestion process, why are short-chain fatty acids more easily absorbed by the body because they are somewhat water soluble.
the digestion process
The six actions that make up the digestive process are ingestion, propulsion, mechanical or physical digestion, chemical digestion process, absorption, and feces.
Ingestion, the first of these procedures, is the act of putting food via the mouth and into the alimentary canal. The meal is chewed there and combined with saliva, Both water-soluble (hydrophilic) and hydrophobic (water-insoluble) molecules can dissolve into a solution when water and an organic solvent are combined. Bilirubin diglucuronide is water-soluble due to its hydrophilic nature. Chemical and mechanical processes both take place during digestion. The process of mechanical digestion is simply physical and does not alter the chemical composition of the food. In its place, it shrinks the meal to enhance its surface area and mobility.
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Select the correct responses to the questions from the drop-down menus.
Which wind belt occurs at about 5 degrees north and south of the equator?
Which wind belt starts at the horse latitudes and moves toward the poles?
Which winds are found primarily in the tropics?
The wind belt that has been occurs at about about 5 degrees north and south of the equator is known as doldrums.
The wind belt that has been starts at the horse latitudes and moves toward the poles is the prevailing westerlies.
The winds that has been found primarily in the tropics are trade winds.
Doldrums refer to the equitorial region of the Atlantic Ocean that has storms and unpredictable winds.
What is north pole and south pole?
The north pole has been known as the northernmost point which has been presented on earth, and on the other hand south pole has been known as the southernmost part or the point of the earth. The area present in between south pole and north pole has been said that it is extremely cold and the area present near the equator is extremely hot.
Therefore, The wind belt that has been occurs at about about 5 degrees north and south of the equator is known as doldrums.
The wind belt that has been starts at the horse latitudes and moves toward the poles is the prevailing westerlies.
The winds that has been found primarily in the tropics are trade winds.
Doldrums refer to the equitorial region of the Atlantic Ocean that has storms and unpredictable winds.
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Answer:
this the answer
Explanation:
Complete the Biomolecule Chart below and fill in the missing sections. Use notes to complete.
ELEMENTS
MONOMER
POLYMER
FUNCTION
EXAMPLES
CARBOHYDRATES
CHO ( 12:1 )
DISACCHARIDE
POLYSACCHARIDE:
Glucose (Sugar),
Cellulose,
Starch, Glycogen
:: TRIGLYCERIDE
LIPIDS
GLCER YOL
3-FATTY
ACIDS
Source of
Long-term
Energy
::
PROTEINS
FATS, OILS, STERIODS, WAXES
:: SOURCE OF SHORT-TERM ENERGY
CHON
DNA & RNA
POLYPEPTIDE
Eggs, Meats,
Fish, Nuts
IMMUNITY, REGULATES HORMONES, ENZYMES
BUILDS & REPAIRS CELLS
NUCLEIC
ACIDS
NUCLEOTIDE
Genetic
Information
& make
proteins
DNA & RNA
:: AMINO ACIDS
CHO (More CH, Less O)
CHONP
MONSACCHARIDE
Answer:
Carbohydrates
atrazine and the electron transport chain atrazine is one of the most widely used agricultural pesticides. atrazine kills plants by binding to a component of the electron transport chain on the thylakoid membrane on photosystem ii. atrazine prevents electrons from passing along the electron transport chain causing all downstream electron carriers to stay in an oxidized form (lodish, 2004.) the major claim of atrazine is that atrazine prevents electron flow in photosystem ii. how could you test this idea that atrazine affects electron flow in the photosystems and not the calvin cycle?
Photosynthesis function to absorb light and use electron transport chains to convert energy. The Calvin cycle reactions assemble carbohydrate molecules with this energy.
Photosynthesis use electron transport chains to convert energy while absorbing light. With this energy, the Calvin cycle reactions put carbohydrate molecules together.
Photosynthesis definition?
Given that the fundamental process has changed little throughout the course of time, all photosynthetic species have a strikingly similar evolutionary history.
The method and elements of photosynthesis that use water as an electron donor are generally the same in all forms of photosynthesis, including the enormous tropical leaves in the rain forest and small cyanobacteria.
Photosynthesis use electron transport chains to convert energy while absorbing light. With this energy, the Calvin cycle reactions put carbohydrate molecules together.
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of all the mutations that occur in a population, why do only a small fraction become widespread and affect the average phenotype of the population? a. most occur in tissue that does not lead to gamete formation b. most occur in tissue that leads to gamete formation c. most that affect phenotypes are deleterious d. most that affect phenotypes are beneficial
Of all the mutations that occur in a population, only a small fraction become widespread and affect the average phenotype of the population because a. most occur in tissue that does not lead to gamete formation.
Mostly, a mutation occurs in the somatic cells of the body of an organism. These kinds of mutations that occur in the somatic cells will not be transformed from parents to children as genes from the gamete cells are transferred from the parents to the offspring.
Hence, if a mutation occurs in the somatic cell then it is reserved to that individual organism.
However, if a mutation occurs in the cells that leads to gamete formation then such a mutation will be carried on from the parent to an offspring. Hence, only a small fraction of the mutations become widespread and the ones that occur in the non-gamete-forming tissues are lost.
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What part of the brain is the arrow pointing to in the diagram below?
Occipital lobe
Temporal lobe
Frontal lobe
Parietal lobe
Answer:
the parietal lobe.
it is near the back and top of the head.
this part processes and interprets information about objects in our external environment.
hope it helps..
Answer: D: Parital Lobe
Explanation: I took the test
In blank______, the relationship between a conditioned stimulus and its conditioned response is changed.
According to the research, the correct answer is counterconditioning. In counterconditioning, the relationship between a conditioned stimulus and its conditioned response is changed.
What is counterconditioning?It is the variety of classical conditioning in which a stimulus already endowed with a motivational significance and evocative of a contradictory response is used as a signaling or conditioned stimulus.
In this sense, the response to the reinforcing stimulus, as a result of which the first becomes the stimulus conditioning the second and changes its effective sense and response accordingly.
Therefore, we can conclude that in Counterconditioning two stimuli can be associated even though they elicit opposite motivational responses.
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After doing a body check-up, Sam found out he had an extremely low level of trypsinogen. Discuss what will happen after Sam eat a meal high in protein and fat.
(Your answer should mention location of secretion, location of activation, negative consequence if the enzyme does not function properly.)
If Sam had an extremely low level of trypsinogen, then he couldn't break down proteins from foods into their basic subunits, while fats were normally metabolized.
What is trypsinogen?Trypsinogen is a precursor of the trypsin enzyme which is used by the body to degrade proteins into their amino acids. All proteins are composed of amino acids, which represent the building blocks of these biomolecules.
Therefore, with this data, we can see that trypsinogen is fundamental to degrading proteins onto their subunits (i.e., their amino acids), thereby the absence of normal levels of this precursor enzyme would be dangerous for the health of the organism.
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Which statements describe the cell membrane? Check all that apply. The cell membrane is very selective. The cell membrane lets anything enter the cell. The cell membrane lets anything leave the cell. The cell membrane is a protective layer surrounding a cell. The cell membrane allows waste to leave the cell.
Answer:
the cell membrane is very selective.
The cell membrane is a protective layer surrounding a cell.
The cell membrane allows waste to leave the cell.
Explanation: the cell membrane is a semipermeable barrier that separates the cell from its surrounding environment. Thus, the cell membrane helps the cell to maintain steady constant cellular conditions.
explain what eutrophication means; describe the processes leading to eutrophication in words; determine the limiting nutrient; calculate algae production from the limiting nutrient; and discuss appropriate approaches to minimize eutrophication based on the limiting nutrient.
Eutrophication is the system by way of which an entire frame of water, or parts of it, becomes progressively enriched with minerals and nutrients.
Especially nitrogen and phosphorus. It has also been defined as a nutrient-precipitated boom in phytoplankton productiveness. Eutrophication is a herbal manner that results from the accumulation of vitamins in lakes or other bodies of water. Algae that feed on nutrients develop into the water floor, decreasing value and water intake pipes.
Nutrient enrichment happens due to runoff from agricultural fields and so on. The rapid increase of algae and different plankton resulted in an algal bloom. Dissolved oxygen depletion and toxin era. Aquatic species die because of the loss of oxygen and manufacturing.
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10.What kinds of vessels are in leaf veins?
The correct option is xylem and phloem. These tissues occur in the middle of the leaf, and transport water and nutrients to the leaf, and sugars produced in the the leaf to other tissues.
+
=-
11
3. State two ways in which the nucleus of the gamete differs from the nucleus of the cheek cell
(2 marks)
1
Type your answer here
2 Type your answer here
Answer:
It should be both cells
Researchers observe that an amoeba appears incapable of forming pseudopods for movement. They conclude that its immobility may be caused by the absence of the protein?.
Immobility of amoeba, may be caused by the absence of actin.
The pseudopodial movement is typically used by the Amoeba to move in the direction of food molecules. The pseudopodia surrounds the food molecule from both sides before eventually swallowing it whole. As a result, pseudopodia are utilized in movement and as a method for capturing prey or obtaining the necessary nutrients.
Because actin is the primary protein, actin polymers push their membrane as they grow, resulting in the formation of the pseudopod. The pseudopodium then uses its adhesion proteins (integrins, for example) to stick to a surface and pull the cell's body forward by contracting an actin-myosin complex in the pseudopod.
Researchers observe that an amoeba appears incapable of forming pseudopods for movement. They conclude that its immobility may be caused by the absence of the protein
a. collagen
b. kinesin
c. tubulin
d. dynein
e. actin
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