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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Which of the following would be considered an example of bioremediation? a. adding nitrogen-fixing microorganisms to a degraded ecosystem to increase nitrogen availability b. using a bulldozer to regrade a strip mine c. reconfiguring the channel of a river d. adding seeds of a chromium-accumulating plant to soil contaminated by chromium
A) adding nitrogen-fixing microorganisms to a degraded ecosystem to increase nitrogen availability is considered an example of bioremediation.
Bioremediation is a technique in which organic organisms are used to do away with or neutralize an environmental pollutant through a metabolic manner. The organic organisms include microscopic organisms, together with fungi, algae, and micro organisms, and the remediation treating the situation.
Bioremediation widely refers to any method in which a biological machine, dwelling or useless, is hired for doing away with environmental pollutants from the air, water, soil, flue gasses, commercial effluents, and many others., in herbal or synthetic settings.
Bioremediation uses micro-organisms to lessen pollutants thru the organic degradation of pollutants into non-poisonous materials. this could involve either cardio or anaerobic micro-organisms that frequently use this breakdown as an energy source
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the building blocks or monomers of nucleic acid molecules are called . view available hint(s)for part a the building blocks or monomers of nucleic acid molecules are called . polysaccharides dna and rna fatty acids nucleotides pyrimidines and purines
The building blocks or monomers of nucleic acid molecules are called nucleotides.
In the field of science, nucleic acid molecules can be described as a type of macromolecule that is made from nucleotides. Nucleic acid molecules are important for the sustenance of life as the genetic material of an organism is made from them.
The nucleotides, which are the building blocks of nucleic acid molecules, are produced from three key components. The three key components of nucleotide are nitrogen base, pentose sugar, and a phosphate group.
DNA is a double-stranded nucleic acid molecule made from the nucleotides adenine, guanine, cytosine and thymine. RNA is a single-stranded nucleic acid molecule made from adenine, guanine, cytosine, and uracil.
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when considering abnormal epigenetic modifications, what factor is currently being viewed as strongly associated with the development of some cancers?
The factor strongly associated with the development of some cancers when considering abnormal epigenetic modifications is environmental stressors.
What are epigenetic modifications?Epigenetic modifications are chemical modifications such as DNA methylation and histone acetylation that change normal gene expression patterns.
Epigenetic modifications represent the most important factor to control gene expression patterns in different cell lineages because they alter the accessibility of transcription factors to DNA gene regions.
Abnormal epigenetic modifications are associated with environmental stressors such as pollutants in the air that induce the emergence of this type of epimutations.
In conclusion, the factor strongly associated with the development of some cancers when considering abnormal epigenetic modifications is environmental stressors.
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can someone help me with these 2 questions 100 POINTS
Answer: C
Explanation:
Looks like a bacterium
select all that apply identify the cell activities that are regulated by cellular control systems. (check all that apply.) multiple select question. breakdown of proteins temperature regulation maintenance of blood pressure energy production
The cell activities that are regulated by cellular control systems include the following below:
A. Energy production
C. Breakdown of proteins
What is Cellular control system?This system is responsible for the different processes which occurs in the cell cycle of organisms and employs the use of different types of compounds.
Energy production is regulated in cells through ATP which is the energy currency and undergoes phosphorylation to release it while in the case of protein, enzymes control it and ensures that the folds are accurate and prevent misfolding or denaturation thereby making option A and C as the most appropriate choice.
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The options are:
A. Energy production
B. Temperature regulation
C. Breakdown of proteins
D. Maintenance of blood pressure
Dna double helices are soluble in water but insoluble in alcohol. How do these physical properties reflect the chemical structure of the dna molecule?.
The structure of DNA double helices are hydrophilic due to their highly charged phosphate groups and hence are soluble in water.
DNA is highly polar because of its highly charged phosphate backbone. Water is also polar and thus dissolves DNA following the principle " like dissolves like ''. The DNA is composed of N-bases, phosphate backbone, and pentose sugar. N-bases are hydrophobic but are on the inner side of the structure.
Whereas, phosphates are hydrophilic and are on the outer side of the structure. The presence of phosphates outside the DNA structure makes it water-soluble.
In addition to this, H in water is positively charged and phosphates in DNA are negatively charged. This enables DNA to get dissolved in water. On the other hand, alcohol, being polar, reduces the affinity of hydrogen bonds with DNA, thus making it insoluble in alcohol.
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Which method of energy production is most likely to have a negative impact upon the environment?
Answer:
Coal-burning power plant.
Explanation:
Have a great one!
How is the structure of water unusual for such small molecules
Answer:
Water molecules are polar, with partial positive charges on the hydrogens, a partial negative charge on the oxygen, and a bent overall structure.
Explanation:
This is because oxygen is more electronegative, meaning that it is better than hydrogen at attaching electrons. Water is an excellent solvent.
Explain why a physician might order a white cell count for a patient with symptoms of an infection.
The quantity of white blood cells in your blood is determined by a white blood count. White blood cells make up the immune system. They aid your body in warding off illnesses and infections.
To combat the bacteria, viruses, or other foreign agents that are the source of your sickness, your body produces more white blood cells while you are ill. Your white blood cell count rises as a result.Your body may produce fewer white blood cells than necessary due to other illnesses. Your white blood cell count drops as a result. In this case you need to take it from outside.If you exhibit symptoms of an infection, inflammation, or autoimmune illness, a WBC Count test may be necessary.You could also require this test if you suffer from an immune-suppressing illness or are on medications that do the same. Your healthcare provider might be able to change your therapy if the test reveals that your white blood count is becoming too low.Learn more about the White blood cells with the help of the given link:
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A behavior geneticist would be most interested in studying hereditary influences on?
A behavior geneticist would be most interested in studying hereditary influences on personality traits.
Who is a behavior geneticist?A behaviour geneticist is an individual that studies the relationship between the genetic make up of an individual and their personality traits.
Personality traits are unique for individuals which show how the person think, feel and behave towards a particular stimulus.
Examples of personality traits that has been studied include the following:
Extroversion: This is the type of personality that has the flare for socializing with others.Agreeableness: This is the type of personality that believes in putting other people's needs before theirs.Openness: This is the personality that is intrigued by new experiences.Conscientiousness: This is the type of personality that is very careful with every move they take.Neuroticism: This is the type of personality that are easily depressed by the negative happenings around them.Each individual is been studied and group under the listed personality traits above by a behavior geneticist.
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How do stem cells from the bone marrow of an adult differ from embryonic stem cells (see Concept 20.3)?
Adult stem cells have little potential, however embryonic stem cells can develop into anything. Embryonic stem cells are also simple to cultivate. Embryonic stem cells, which can differentiate into any cell, make up embryos.
A stem cell is an unspecialized biological cell that may differentiate into several adult cell types and divide to produce more of the same type of cell, helping to regenerate and repair damaged tissue. They can be given by a young mother or a healthy adult.Bone marrow is the name for the soft material that fills the middle of the bones. There are many blood vessels in it. Red and yellow bone marrow make up both forms of human bone marrow. The bone marrow is where white blood cells and red blood cells are created.From embryos that are three to five days old, embryonic stem cells are produced. Embryonic stem cells are excellent for regenerating or restoring harmed tissue and organs due to their flexibility. Because they are only found in a few specific bodily regions, adult stem cells only occur in a few number of variations.Learn more about the stem cells with the help of the given link:
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if a diet is low in fats, then proteins from the skeletal muscles will be broken down and used in place of carbohydrates to meet this need.
If a diet is low in fats, then proteins from the skeletal muscles will be broken down is false because it contain Ketogenesis
Ketogenesis happens within the liver. Ketones can be shaped from fatty acids when glucose is lacking including out of control diabetes or hunger. The coronary heart, mind, kidneys and skeletal muscle can adapt to using ketones as an electricity source.
Gluconeogenesis is the synthesis of glucose from non CHO assets which include glycerol and amino acids. it is the reversal of the glycolytic pathway and occurs with increased levels of glucagon and epinephrine.
Glycogenolysis is the breakdown of glycogen to glucose. it's far a catabolic system stimulated by glucagon and epinephrine.
Ketogenesis is while someone takes excess glucose then Insulin is released from the beta cells within the pancreas. it's far an anabolic hormone that promotes the conversion of glucose to glycogen in liver and muscle, uptake of glucose into cells, and promotes fat and protein synthesis.
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Which situations would result in an ethical concern for a genetic counselor? select all of the statements that apply.
The genetic counselor raises the ethical concern of that is related to the privacy, safety, justice, equity and the genome editing research that involves embryos.
The information about and individuals, family history, risk of disease, genetic disorder need to be kept confidential. The genetic tests can provide the information about the person's medical future, that is related to their gene sequence that can causes family discord and psychological stress.
The genetic counselor provide the facility to the individual or family for a variety of genetic disorder, variety of inherited condition, that can be followed in the pedigree chart.
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substance x is more concentrated outside the cell than inside the cell. substance z is more concentrated inside the cell than outside the cell. assume that both substances can pass freely through the cell membrane.
Molecules of X will move inside the cell, and molecules of Z wll move outside the cell until equilibrium is reached. One or more atoms make up molecules. They may have the same atoms (for example, an oxygen molecule has two oxygen atoms) or different atoms if they have more than one .
Biological molecules like DNA and proteins can include thousands of atoms. A molecule is the term used to describe the aggregate of atoms that results from the formation of covalent bonds. It might be made up of atoms of just one chemical element, like oxygen (O2), or it can be made up of several different elements, like water (H2O).
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You have a patient who is lethargic (really sleepy, lacking energy),
though they have gotten plenty of sleep and eaten full meals throughout the day. What organelle is likely the dysfunctional culprit?
Lysosome
Mitochondria
Nucleus
Vacuole
According to the research, the correct option is Mitochondria. If a patient is lethargic (really sleepy, lacking energy), probably Mitochondria is likely the dysfunctional culprit organelle.
What is Mitochondria?It is a cellular organelle that provides the energy necessary to carry out cellular activity from the synthesis of ATP by oxidizing metabolites through oxidative phosphorylation, generating a very high percentage of the energy produced by the cell.
In this sense, it provides chemical fuel to the various cellular processes necessary for life (cellular respiration), a defect in it would attract lacking energy.
Therefore, we can conclude that according to the research, the correct option is Mitochondria. If a patient is lethargic (really sleepy, lacking energy), probably Mitochondria is likely the dysfunctional culprit organelle.
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According to the logistic growth equation {dN}/{dt} = rint N [ (K-N) / K ] a. the number of individuals added per unit time is greatest when N is close to zero. b. the per capita growth rate (r) increases as N approaches K . c. population growth is zero when N equals K . d. the population grows exponentially when K is small.
The correct option is (C) population growth is zero when N equals K.
According to the logistic growth equation, dN/dt =rN (K-N)/K, population growth is zero when N equals K.
What is exponential and logistic growth?When a population experiences exponential growth, the growth rate per capita (per person) remains constant regardless of population size, resulting in exponential population expansion.
In nature, populations may grow exponentially for a while, but ultimately, the availability of resources will limit their expansion.
As a population gets closer to the carrying capacity, a limit set by the environment's finite resources, the rate of per capita growth slows (K).
In contrast to logistic growth, which results in an S-shaped curve, exponential growth creates a J-shaped curve.
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Carlo is wondering what causes plants to grow at different rates. Carlo’s hypothesis is “Plants will grow more when the day is longer.” To test his hypothesis, Carlo sets up an investigation that includes an experimental and control group. What factor would remain constant in the control group?
Exposure to sunlight is the factor that would remain constant in the control group.
There is an experimental group and a control group in every scientific investigation. To eliminate any error in results caused by factors other than the variable factor, a control group is included. The experimental group is the one that has been exposed to the variable factor at various levels.
Here, Carlo seeks to ascertain how the length of the day affects plant development. The length of sunshine is hence the test variable in this situation. This time period will be altered in the experimental group to assess its impact. It will remain the same in the control group so that the effects of other things can't affect the observed experimental result.
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Joe wants to know if using a pencil eraser will erase better than the big pink handheld eraser. He decides to set up an experiment. He compares the normal pencil eraser to the handheld pink to see which will leave the most pencil residue.
What is the independent variable?
What is the dependent variable?
What should Joe control in this experiment?
A pink handheld eraser is an independent variable. The pencil eraser is the dependent variable. Pencil erasers should be controlled in this experiment.
An independent variable is one that you adjust, control, or modify in an experimental study to look at its consequences. Because it is unaffected by any other study variables, it is called "independent." Independent variables are also referred to as explanatory variables (they explain an event or outcome).
A dependent variable is one that changes as a result of an independent variable changing. The outcome you're trying to measure "depends" on your independent variable. In statistics, dependent variables are often referred to as response variables (they respond to a change in another variable).
Understanding variables is crucial since they serve as the fundamental building blocks of the data examined and evaluated in research projects. When doing descriptive research or interpreting the results of an experiment, researchers carefully examine and interpret the value(s) of each variable to understand how things relate to one another.
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baby sean has cystic fibrosis, which causes thick mucus secretions that can block ducts like the pancreatic duct, leading to insufficient enzymes in the small intestine. why are these enzymes important?
According to the research, If baby Sean has cystic fibrosis, the digestive enzymes secreted by the pancreas are not released into the intestine, so the baby will have difficulty absorbing fat, which is essential for the body.
What is cystic fibrosis?It is an autosomal recessive multisystemic disease, characterized by a chronic infection of the respiratory tract that leads to exocrine pancreatic insufficiency.
In this sense, it produces thick secretions that obstruct the ducts of the pancreas where digestive enzymes are responsible for digesting food in order to be absorbed and assimilated, cystic fibrosis causes damage to the lungs and pancreas which affects the digestive system and fat absorption.
Therefore, we can conclude that according to the research, If baby Sean has cystic fibrosis, the digestive enzymes secreted by the pancreas are not released into the intestine, so the baby will have difficulty absorbing fat, which is essential for the body.
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Aquatic biomes are categorized by? i. dominant plant growth forms. ii. depth. iii. salinity.
An iii.salinity
Explanation:
What is the first digestive enzyme introduced in the process of digestion that targets the breakdown of starch?
Carbohydras the first digestive enzyme introduced in the process of digestion that targets the breakdown of starch
What is the first digestive enzyme presented in the process of digestion that targets?Amylase is accountable for the breaking of the bonds in starches, polysaccharides, and complicated carbohydrates into easier-to-absorb simple sugars. Salivary amylase is the first step in the chemical digestion of foodstuffs
What are the enzymes accountable for digestion?
There are three major types of digestive enzymes: Proteases: Crackdown protein into small peptides and amino acids. Lipases: Break down fat into three fatty acids plus a glycerol molecule. Amylases: Break down carbs like starch into straightforward sugars.
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Complete this sentence. The melting point of a sample will ________ when the size of the sample increases.
Answer:
stays the same
Explanation:
(b) How many dark brown mice were caught in the dark-colored soil enclosure on a moonlit night?
About 12 dark brown mice were caught in the dark-colored soil enclosure on a moonlit night.
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.To learn more about mouse models with camouflage coloration, refer to:
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lionfish are native to the tropical waters of the indo-pacific. what conclusions can be made about the impact of climate change on the range of lionfi
Weather alternatives have restricted the habitat of lionfish. It has emerged as an endangered species, decreasing biodiversity.
Lionfish is able to be deduced that weather trade proLionfishposes a big threat to marine communities, specially, invasive species, which might be concerned about. As temperatures keep to rise above the norm, lionfish will amplify their invasion further along the Western Atlantic.
Lionfish is native to the tropical waters of the indo-pacific, conclusions can be made about the impact of weather trade at the variety of lionfish. Extinctions of neighborhood vegetation and animals, decrease biodiversity, compete with local organisms for restricted assets, and exchange habitats.
Invasive lionfish disrupt the herbal cycle of coral reef structures with the resource of competing with local predators and eating big quantities of prey, main to reduced recruitment and viable extirpation of local fish species.
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which type of restriction enzyme is most often used in biotechnology research due to its specificity
Answer: TYPE 2
Explanation:
#2
Scientists determined that excess fertilizer from a pig farm entered a shallow lake. The fertilizer initially caused an
increase in aquatic plants in the lake. However, as the plants died and decomposed, there was a decrease in oxygen
levels in the water. The intensity at which a fish species is affected by oxygen levels in the water varies. Trout are the
first to feel the effects at oxygen levels below 5.0 parts per million. Carp been able to survive levels down to about 1.0
ppm for extended periods.
What will most likely happen to the trout and carp populations in the lake if low oxygen level,
or hypoxia, continue over an extended period? Explain using the concepts of range of
tolerance and abiotic factors.
What will probably happen to the populations of trout and carp in the lake if the low level of oxygen, is that the number of species will drastically reduce, because this conditions of oxygenation, an abiotic factor, takes the stress of the animals to its maximum, reducing, or making this ecosystem uninhabitable.
What is range of tolerance?Biologists are often interested in studying and understanding the tolerance limits of different species to different environmental factors.
If you plot how many individuals in a population live below each part of the ranges for any given factor, you will almost always get a bell-shaped curve. Take a look at the two tolerance limits curves shown below. The horizontal axis could be any abiotic factor (environmental conditions), but for now, let's say it's for the oxygen level in freshwater lakes.
If you are studying a particular species of fish, say blackstripe topminnow (Fundulus notatus), you could go out and measure the oxygen level of each lake you find this species of fundulid in and also count how many of these fish are in each lake.
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The concept that a resource that is degraded by the increasing populations that utilize the resource without any regulation of that resource is referred to as?
The concept that a resource that is degraded by the increasing populations that utilize the resource without any regulation of that resource is referred to as the tragedy of the commons.
Definition of the tragedy of the commons :The tragedy of the commons is a circumstance in which there is an overconsumption of a specific product/service because rational individual decisions result in an outcome that is detrimental to overall wellbeing.
What is a tragedy of the commons example?Extinction of animals: Overfishing and overhunting are examples of individuals acting in their own self-interest depleting a shared pool resource. Natural resource depletion: When common resources are depleted for short-term benefit, the result might be a tragedy of the commons.
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based on your hypothesis, you predict that the chemical isolated from the fungus will successfully kill cancer cells. to test this prediction, you design the following experiment. you isolate cancerous cells from the colon of a patient from north carolina and culture (grow) the cells in your lab. you divide the cultured cells into four separate culture dishes. you treat two of the dishes with the fungus chemical and the other two with a control solution that does not contain the chemical. over the next ten days, you collect data on the percentage of cells that remain alive in each culture dish.
The values of the data gives the range of the percentage of cells with chemical treatment remaining as [100, 10], while those without treatment have a range of [100, 90], which gives;
Statement(s) supported by the data are;
1. Cancer cells treated with chemical have a lower survival rate than cells that are not treated
3. This chemical will be useful for treating colon cancer but not necessarily other types of cancer
5. After 5 days of chemical treatment, less than 50% of the cancer cells are alive
6. After 10 days without chemical treatment, more than 90% of the cancer cells are alive
Statement(s) not supported by the data
2. Cancer cells treated with chemical have a higher survival rate than cells that are not treated
4. This chemical will be used with all types of cancer
How can the correct information be obtained from the graph?The possible question options of obtained from a similar question are as follows;
Cancer cells treated with chemical have a lower survival rate than cells that are not treatedCancer cells treated with chemical have a higher survival rate than cells that are not treatedThis chemical will be useful for treating colon cancer but not necessarily other types of cancerThis chemical will be used with all types of cancerAfter 5 days of chemical treatment, less than 50% of the cancer cells are aliveAfter 10 days without chemical treatment, more than 90% of the cancer cells are alivePlease find attached the graph displaying the data collected.
Required; To determine the statements that are supported by the graph
Solution
The data on the graph shows that as the number of days increases, the survival rate for cancer cells reduces from 100% to about 10%, such that less than 50% are alive in 5 days, while the survival rate for cells not treated reduces by about 10% to 90% in the same period.
From the graph, we therefore have;
Statement(s) supported by the data
The statements supported by the data are; 1, 3, 5 and 6Statement(s) not supported by the data
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The major specialty within anthropology that involves the analysis of the material remains of the human past is called?
The major specialty within anthropology that involves the analysis of the material remains of the human past is called Archaeology
The study of the ancient and recent human past via artifacts is called archaeology. The million-year-old remains of our oldest human predecessors found in Africa may be studied by archaeologists. The scientific study of human activity via the recovery and examination of material culture is known as archaeology or archeology. The objects, buildings, biofacts or environmental facts, places, and cultural landscapes that make up the archaeological record. Both a social science and a humanities subfield, archaeology is both. In North America, archaeology is a subfield of anthropology, although in Europe it is frequently seen as either a discipline in and of itself or as a subfield of other disciplines.
Archaeologists research the prehistory and history of the human species, starting with the creation of the first stone tools at Lomekwi, in East Africa, 3.3 million years ago, and continuing up to the present.
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Suppose that an invasive fungus killed most individuals of Mytilus at these sites. Predict how species richness would be affected if Pisaster were then removed.
Even in the absence of Pisaster, the extinction of members of the dominating species Mytilus should increase the diversity of species.
Why are dominant species important?In controlling species diversity and ecosystem productivity, dominant species are crucial. For instance, numerically dominating species might reduce species variety by inhibiting the emergence of new species in a forest ecosystem (Gilbert et al. 2009; Crutsinger et al. 2010).
What is an example of a dominating species?Their height has an impact on others' vegetation as well as the survival of numerous species that depend on them. Conifers, such as larch, spruce, and fir, are specific examples of dominant species in the Northern forest.
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