Water leaves the plant cells and they become flaccid.
What happens when salt enters into the cells?We know that osmosis refers to the movement of solvent from the region where the solvent molecules are at lower concentration, the the region where the solvent molecules are at higher concentration across a semipermeable membrane.
Now, the cells have water in them. When salt gets into the cell, the salt becomes more concentrated (hypertonic) than the cell. This would make water to leave the cell and get into the incoming salt water.
As such, as water leaves the plant cells, the plant cells would become flaccid.
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The four essential elements for life are _______. a. carbon, hydrogen, oxygen and nitrogen b. carbon, hydrogen, oxygen and iron c. carbon, nitrogen, oxygen and magnesium d. iron, nitrogen, oxygen and magnesium
Answer:
I think its A
Explanation:
Cats are one biotic factor that affects the size of the bird population.
Which two of the following are biotic factors?
Food
Pathogens
Sunlight
Food and pathogens are biotic factors.
Biotic and Abiotic factors :Ecosystems are primarily made up of both biotic and abiotic components. Abiotic factors are non-living elements like water, soil, and atmosphere, whereas biotic factors are living things found in an ecosystem like plants, animals, and bacteria.
In an ecosystem, how these elements interact is crucial. Producers, consumers, herbivores, carnivores, omnivores, and decomposers are the five biotic, or living, factors present in all ecosystems. Abiotic factors are non-living components of an ecosystem that influence their surroundings. Examples could be light, water, and temperature in a terrestrial ecosystem.
Sunlight is a very significant abiotic factor because it is the primary source of energy on Earth.
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It is difficult for molecules to pass through the phospholipid bilayer because.
It is difficult for molecules to pass through the phospholipid bilayer because like attracts like. The polar molecules are not able to enter the membrane due to attraction between polar molecules outside the membrane. Likewise, the non-polar molecules are not able to cross the membrane after entering. Therefore, no molecules can cross the membrane.
Phospholipid bilayer is the membrane composed of two layers of lipids surrounding the cell. The polar heads of the lipids are placed on the outer side, whereas the non-polar hydrophobic tails are all placed inside, away from the solvent molecules.
Polar molecules are those that have a positive charge at one end while negative on the other. For example HF is a polar molecule with H being slightly positive and F being slightly negative.
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Suppose the geese following Lorenz were bred to each other. How might their imprinting on Lorenz affect their offspring? Explain.
Imprinting takes place at a 'critical period'; if imprinting does not take place in time, the goslings do not attach themselves to a mother figure.
What was Konrad Lorenz's take on imprinting?Imprinting, initially described by naturalist Konrad Lorenz in the 1930s, happens when an animal creates a connection to the first item it sees after hatching. Lorenz noticed that newly hatched goslings would flock to the first moving item they encountered, which was frequently Lorenz himself.
Despite being of a different species, Lorenz was able to persuade geese to imprint on him as their mother. Lorenz studied imprinting by observing animals in their natural surroundings. He also used the technique of empathising with animals.
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Explain why "editing" is an appropriate metaphor for how natural selection acts on a population's heritable variation.
The term editor is a metaphor for natural selection because natural selection edits the naturally occurring heritable variation by favoring one genotype over another. It causes a change in population gene frequencies because it chooses those who will live and pass on their genes to the next generation.
What do you mean by natural selection?
In natural selection, those variations in the genotype (the entire complex of genes inherited from both parents) that increase the organism's chances of survival and reproduction are preserved and multiplied from generation to generation at the expense of less advantageous variations. Evolution often occurs as a result of this process. Natural selection can arise from differences in survival, fecundity, developmental rate, mating success, or any other aspect of the life cycle. All these differences lead to natural selection to the extent that they affect the number of offspring an organism leaves behind.To learn more about natural selection, refer to:
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The carbon cycle wuiz carbon is an element that is ?
The carbon cycle is one that helps the element carbon to cycle itself through living and non living components of our planet.
What is Carbon cycle?This refers to a biogeochemical cycle which involves the circulation of carbon in various forms through nature. The different processes include the following below:
Carbon enters the atmosphere as Carbon dioxide.Carbon dioxide is absorbed and used by green plants for photosynthesis.Animals consume plants thereby leading to the presence of carbon in their body system.Animals and plants die and they decompose which result in the carbon being reabsorbed back into the atmosphere.The carbon cycle is responsible for living organisms being referred to as organic due to the presence of carbon atoms in their system as a result of different processes which occurs in the planet.
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Which three functional groups are part of the basic structure of every amino acid?.
R group, Amino Acid Group, and Carboxyl Group are the three functional group which are the part of every amino acid.
Amino Acid- Small chemicals known as amino acids serve as the foundation for proteins. Proteins carry out several crucial chemical processes as well as providing structural support for the cell. 20 distinct smaller, simpler amino acid combinations make up the molecules that make up each protein.
Protein- Large, intricate molecules known as proteins serve a variety of vital functions in the body. They are crucial for the construction, operation, and control of the body's tissues and organs and carry out the majority of their job inside cells.
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Identify the theme or themes exemplified by
(c) A hummingbird using sugar to power its flight.
The theme behind the use of sugar to power its flight is the transfer and transformation of energy and matter is required for life.
Explain a humming bird.
Hummingbird metabolism is a marvel of evolutionary engineering. These tiny birds can power all of their energetic soaring flight by burning the sugar contained in the floral nectar of their diet.Hummingbirds need an incredible amount of energy to flap their wings 50 times or more per second to maintain hovering flight. In fact, if a hummingbird were the size of a human, it would use up energy more than 10 times faster than an Olympic marathon runner. They can do this by burning only the last sugar ingested in the muscles while avoiding the energy tax of the first conversion of sugar to fat.To learn more about humming bird, refer to:
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Aggregates of materials, either organic or inorganic, within bacterial cells (not membrane-bound) are called _____.
Aggregates of materials, either organic or inorganic, within bacterial cells (not membrane-bound) are called inclusions .
Inclusions are stored nutrients/deutoplasmic substances, secretory products, and pigment granules. Examples of inclusions are glycogen granules in the liver and muscle cells, lipid droplets in fat cells, pigment granules in certain cells of skin and hair, and crystals of various types.
here The inclusion bodies serve as storage vessels. Glycogen is stored as a reserve of carbohydrates and energy.The inclusion is an integral part of the cell's metabolic machinery, it is important in adjusting the environment of the cell, thereby regulating certain metabolic events, or might represent a product of the cell's metabolism.the inclusions are found mostly in the cytoplasm and, to a lesser extent, the nucleus of oligodendrocytes. Inclusions are also observed in the cytoplasm and nucleus of some nerve cells and in neuropil threads.to know more about carbohydrates click here
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how is dna in a prokaryote different from the dna in a eukaryote
Prokaryotic cells are distinct from eukaryotic cells because they are a more primitive type of cell while eukaryotic cells are complex cells with clearly defined organelles.
The DNA of eukaryotes found in the nucleus of the cell , also the other organelles like chloroplast and mitochondria also have nucleus.where as the DNA of prokaryotes are present in cytoplasm and not found inside the organelles.The DNA of eukaryotes are linear with two ends where as the DNA of prokaryotes are circular.The DNA of eukaryotes contains more than one genome where as the DNA of prokaryotes contain only one genome.The DNA of eukaryotes organized into many chromosomes while the DNA of prokaryotes organized into only one chromosomes.The DNA of eukaryotes are packed into histones while the DNA of prokaryotes are not packed into histones.The DNA replication in eukaryotes is slow while the DNA replication in prokaryotes is rapid There is DNA of eukaryotes are different from the DNA of prokaryotes because of complexity of organism.
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(b) T . angustifolia does not grow in salt marshes. Does this appear to be due to salinity or competition? Explain your answer.
An experiment on S. patens and T. angustifolia demonstrates how salinity and competition impact plant dispersal in an estuary.
According to observations made on the ground, Typha angustifolia, or cattail, predominates in freshwater marshes, whereas Spartina patens, or salt marsh hay, is the main plant in salt marshes.S. patens are frequently absent from wild freshwater wetlands because it may flourish at zero salinity in experimental freshwater marshes without competing neighbors but has lower biomass in the presence of neighbors.T. angustifolia cannot grow in naturally occurring salt marshes due to salinity, and it also cannot grow in artificial salt marshes even in the absence of competing species. In a greenhouse with higher saline levels, it cannot grow.Learn more about the halophytes with the help of the given link:
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Why would a scientist want to stain a specimen before observing it with a compound light microscope?.
Answer:
to get a better look at it
Explanation:
Students raised two groups of the same type of bean plant. They gave both groups the same amount of water and sunlight. They treated one group with fertilizer. They observed that the fertilized plants, on average, were taller than the bean plants that had not been treated with fertilizer. How does this show that environmental factors influence growth?
Fertilizers can affect the growth of the bean plants. Fertilizers provides nutrients which are necessary for the growth and development of the plants.
What are fertilizers?Fertilizers are additional ingredients applied to crops to increase productivity. These are frequently used by farmers to increase agricultural output. These fertilizers contain nitrogen, potassium, and phosphorus, three essential nutrients that plants require.
What detrimental consequences on plant development might fertilizer have?Excessive fertilization alters the soil by raising the salt content and may harm important soil bacteria. An abrupt development of the plant with insufficient roots that are unable to supply it with appropriate water and nutrients can be the outcome of over-fertilization.
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Observation: I am in the lab seeing if adding sugar to water affects how long it takes the water to boil. In the first
test I boil 100 mL of water only in a beaker over a Bunsen burner and observe it takes 5:15 mins to boil. Next I add 2
grams of sugar to 100 mL of water and stir to dissolve, then boil making sure everything is the same. This time it
takes 7:05 mins to boil the sugar-water mix. Next I add 4 grams of sugar to 100 mL of water. This time it takes 10:35
mins to boil the sugar-water mix.
What could we infer about the effect sugar has on the boiling time of water?
We can infer that the effect sugar has on the boiling time of water is that it increases the boiling time of the water.
What can be conclude about the effect sugar on the boiling time of water?The boiling of a pure liquid such as water occurs at its boiling point.
The boiling point of a liquid is the temperature at which the liquid boil. The boiling point of pure water is 100°C.
When solutes are added to a solvent, it usually have the effect of raising the boiling point of the solvent. This is known as colligative properties of solutions.
For example, when sugar or salt is added to water, the boiling point and boiling time of water is elevated.
Considering the observation when sugar was added to water ad the water was heated until it began boiling. It was observed that increasing the quantity of sugar increased the boiling time of the water.
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What are some of the differences in microclimate be tween an unplanted agricultural field and a nearby stream corridor with trees?
A microclimate is a collection of climatic patterns that have been identified in specific localized regions of the earth's surface. It can also be very fine localized patterns of climatic conditions that are determined on a smaller scale, and it includes abiotic elements like temperature, windspeed, sunlight, and moisture.
In an agricultural field, soil characteristics, rainfall, vegetation, land usage, and water retention all affect the microclimate. The microclimate in an agricultural field is determined by the growth of the flora, the amount of precipitation, and the landscape's characteristics, such as warmth or cold, dryness or wetness.The microclimates along stream corridors with trees are moist and shaded. Trees shield the environment from the sun's heat, keeping it cooler. Additionally, it decreases the temperature of the area by draining moisture from their leaves and branches and cooling the air.This is because microclimates play a significant role in the local interactions between abiotic factors and are influenced by seasonal and day-night conditions. As a result, the nearby stream corridor with trees has a lower temperature and is more shaded than the agricultural field without vegetation.Learn more about the Microclimate with the help of the given link:
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The _________ of a neuron receive impulses from other neurons; the ________ transmits nerve impulses to other cells.
The dendrite of a neuron receives impulses from other neurons; the axon transmits nerve impulses to other cells.
We can define neurons as the basic part of the nervous system responsible for forming electrical signals in the body which are referred to as action potential.
Dendrites are tree-shaped projections of the neuron majorly involved in receiving impulses or information from other neurons. This information is then moved to the cell body of the neuron.
After receiving an impulse from the dendrites, the cell body analyzes it and forms an outgoing response.
This outgoing response is transferred from the axons to the dendrite of another cell.
Hence, dendrites are the parts of a neuron that receive an impulse whereas axons are the part that transmits nerve impulses to other cells.
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At what ph level do the gastrin-producing cells stop secreting acid into the stomach?.
WRITE ABOUT A THEME: ORGANIZATION You have seen many examples of how form fits function all levels of the biological hierarchy. However, we can imagine forms that would function better than some forms actually found in nature. For example, if the wings of a bird were not formed from its forelimbs, such a hypothetical bird could fly yet also hold objects with its forelimbs. In a short essay (100-150 words), use the concept of "evolution as tinkering" to explain why there are limits to the functionality of forms in nature.
The "evolution as tinkering" indicates that adaptations occur via microevolution and these progressive changes might limit the emergence of better functionalities in an environment.
What does microevolution mean?The term microevolution makes reference to slow and small changes in the phenotypic characteristics that serve as adaptations and confer an evolutionary advantage, being therefore selected by natural selection.
This process (microevolution) involves a type of adaptive change that occurs "drop by drop" and therefore this also imposes limits on the emergence of the best phenotypic adaptations for a particular environment, which is associated with differential survival and reproduction of the fittest organisms.
In conclusion, the concept of "evolution as tinkering" states that trait change occurs via microevolution, and these progressive modifications have limited the emergence of better functionalities (i.e., better adaptative features to the particular environment) in nature.
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The rate of population growth in texas over the last decade can be characterized as?
The rate of population growth in Texas over the last decade can be characterized as Rapid.
When there are more births than deaths—a situation known as a natural increase—rapid population growth results. The spread of various diseases, the expansion of food production and distribution, and other factors all contribute to rapid population growth.
While rapid population growth can be ascribed to migration, a growing number of people are choosing to lead healthier lifestyles, which in turn has raised life expectancy rates. In New Zealand, migration is responsible for roughly two thirds of population growth. Some places see a decline in population because they send more migrants elsewhere than they receive.
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How much of 0.5 m glucose (molecular mass 180 ) is needed to provide 100 mg of glucose? a. 1.11 ml
b. 0.11 ml
c. 100 ml
d. 10 ml
Taking into account the definition of molarity and molar mass, the correct answer is option a: 1.11 mL of 0.5 M glucose (molecular mass 180) is needed to provide 100 mg of glucose.
Definition of molarityMolarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by :
molarity= mass÷ volume
Molarity is expressed in units moles/L.
Definition of molar massThe molar mass of substance is a property defined as the amount of mass that a substance contains in one mole.
Volume in this caseIn this case, you have:
Molarity of the solution= 0.5 Mmass= 100 mg= 0.1 g (being 1 mg= 0.001 g)molar mass of glucose= 180 g/molYou can apply the following rule of three: If by definition of molar mass 180 grams of glucose are contained in 1 mole, 0.1 grams of glucose are contained in how many moles?
amount of moles= (0.1 grams× 1 mole)÷ 180 grams
amount of moles= 5.556×10⁻⁴ moles
Noe, replacing in the definition of molarity:
0.5 M= 5.556×10⁻⁴ moles÷ volume
Solving:
0.5 M× volume= 5.556×10⁻⁴ moles
volume= 5.556×10⁻⁴ moles ÷0.5 M
volume=1.11×10⁻³ L= 1.11 mL (being 1 L= 1000 mL)
Finally, the correct answer is option a: 1.11 mL of 0.5 M glucose (molecular mass 180) is needed to provide 100 mg of glucose.
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a new mutation arises in the intron of a gene in a somatic cell. this mutation contributes to in the population by individuals in the next generation.
A somatic mutation contributes to variation in the population it will not be inherited by individuals in the next generation.
What is a neutral mutation?A neutral mutation is any mutation that does not affect the fitness of an organism and they are generally found in non-coding genome regions instead of protein-coding regions.
Nonetheless, it is important to highlight that a mutation in an intron may also have evolutionary significance if it has regulatory roles associated with gene expression.
In conclusion, a new mutation arises in the intron of a gene in a somatic cell, thereby this mutation contributes to variation in the population it will not be inherited by individuals in the next generation.
Complete question:
Fill in the blank. A new mutation arises in the intron of a gene in a somatic cell. This mutation contributes to _____ in the population _____ by individuals in the next generation.
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What does the term phlebotomy actually mean? 1.removal of a vein 2.incision of a vein 3.testing of blood 4.withdrawal of red blood cells
Answer: withdrawal of red blood cells
Explanation:
(a) Is a dark brown mouse on dark-colored soil more likely to escape predation under a full moon or with no moon?
Is a dark brown mouse on dark-colored soil more likely to escape predation under a full moon or with no moon?
On dark-colored soil; fewer dark brown mice were caught on dark soil than on light soil under a full moon.
What is mouse models with camouflage coloration?
This model simulates natural selection and adaptation in rock pocket mouse populations found primarily in rock outcrops in the deserts of the southwestern United States and Mexico. This model is based on a lesson plan designed by the [Howard Hughes Medical Institute]
The model simulates changes in coat color in a population of rock pocket mice due to predation. Mice that cannot camouflage have a higher chance of being predatory when predators are present. Users can examine how a population evolves through natural selection under different environmental conditions.
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In what ways does a methyl group differ chemically from the other six important chemical groups shown in Figure 4.9 ?
The methyl group is different as it is not reactive and is nonpolar. The remaining six groups, referred to as functional groups, can take part in chemical processes. These functional groups, with the exception of the sulfhydryl group, are hydrophilic, increasing the solubility of organic molecules in water.
What is methyl group?In organic chemistry, the methyl group is an alkyl produced from methane that has the chemical formula CH3, one carbon atom bound to three hydrogen atoms. The group's name is frequently shortened to Me in formulas. In numerous organic molecules, this hydrocarbon group can be found. In the majority of compounds, it is a very stable group.
Methyl groups, which have a core carbon atom linked to three hydrogen atoms, are very stable. Even in the presence of extremely potent acids or bases, the functional group itself is often non-reactive.
In conclusion, in methyl group is different as it is not reactive and is nonpolar. The remaining six groups, referred to as functional groups, can take part in chemical processes.
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fecal microbiota transplantation after oral vancomycin for recurrent clostridium difficile infection
fecal microbiota transplantation after oral vancomycin for recurrent clostridium difficile infection, the statement is correct.
what are microbiota ?
A microbiota is defined as an ecological community of commensals, symbiotic and pathogenic microorganisms, it is found in and on all multicellular organisms.
A microbiota includes bacteria, archaea , protists, fungi and viruses crucial for immunologic, hormonal and metabolic homeostasis, where as another term microbiome are the collective genomes of the microorganisms that reside in an environmental niche.
In human beings, the microbiota seen On the skin, Inside the stomach, in alimentary canals, duodenum and in rectum, in oral and in saliva and in lungs etc.
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What is "descent with modification"
described as?
A. a structure that is the same in all organisms just with
small differences in its purpose
B. the way organisms descend from a common ancestor
just with slight modifications
C. how a structure has a similiar function but different
form
D. a type of structure that past ancestors used but no
longer has a purpose for current organisms
Descent with modification described as the way organisms descend from a common ancestor just with slight modifications.
Define descent with modification.When features from one organism's parent are passed on to its offspring, it is referred to as descent with modification. Heredity is the term for this trait transmission; the fundamental building block of heredity is the gene. As an organism's building blocks, genes include instructions for every aspect of its development, including its physiology, behavior, appearance, and reproduction.
Gene transmission is not always precise. Incorrect portions of the blueprints could be replicated, or in the case of creatures that reproduce sexually, the genes of one parent could be mixed with the genes of another parent. Children are not identical replicas of either of their parents, for this reason.
Three fundamental ideas are useful in elucidating the operation of descent with modification:
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Answer:
Its B
Explanation:
the way organisms descend from a common ancestor
just with slight modifications
in reproduction, genetic information comes from only one parent; whereas, in reproduction, genetic information from two parents unites to form an offspring.
In asexual reproduction, genetic information comes from only one parent; whereas, in sexual reproduction, genetic information from two parents to form an offspring.
What is asexual reproduction?Asexual reproduction is a type of mechanism by which only one parental organism may produce offspring and therefore it is not associated with the formation of gametes.
In sexual reproduction, the cells from different parents having half genetic material fuse to produce an egg that will develop into an adult organism by a process known as fertilization.
The different types of asexual reproduction in organisms include, among others, vegetative propagation, binary fission (bacteria), Budding, fragmentation division, reproduction by spores (sporogenesis), etc.
In conclusion, in asexual reproduction, genetic information comes from only one parent; whereas, in sexual reproduction, genetic information from two parents to form an offspring.
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shifting of activation center in the brain during muscle fatigue: an explanation of minimal central fatigue
Muscle fatigue is characterized by a decrease in the muscle's ability to generate force, which can increase the risk of injury and reduce quality of life and productivity.
Muscle fatigue can be classified as either central or peripheral in nature, with the majority of situations involving both. Although methods that relate to muscle fatigue have been extensively studied, the function of cortical centers in contributing to tiredness during voluntary motor tasks (e.g., if the brain is capable of producing constant descending commands) or modulating muscle fatigue remains largely unknown to all.
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an ion channel in a cell membrane is an example of (select all that that apply) an atpase molecule a phospholipid bilayer an integral membrane protein a transmembrane protein
According to the research, the correct option is an integral membrane protein. An ion channel in a cell membrane is an example of an integral membrane protein.
What is an ion channel?They are integral membrane proteins that act as existing pores in the cell membrane through which ions circulate through the impermeable lipid cell membrane, selectively and in favor of a gradient.
In this sense, these channels made with integral proteins can be ligand-dependent or voltage-dependent, depending on whether their opening is determined by ligand binding or voltage changes.
Therefore, we can conclude that according to the research, the correct option is an integral membrane protein. An ion channel in a cell membrane is an example of an integral membrane protein.
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In humans, iron is a trace element required for the proper functioning of hemoglobin, the molecule that carries oxygen in red blood cells. What might be the effects of an iron deficiency?
Caracteristicile fierului :
Oligoelement abundent în corpul uman
În alimentație, facem distincție între sursele de fier hem și cele de fier non-hem.
Fierul hem din carne și pește este mai bine absorbit
Anemia feriprivă este foarte frecventă și poate fi cauzată de un aport scăzut de fier
Femeile de vârstă fertilă și femeile însărcinate au o nevoie crescută de fier