Answer:
A. Puffins receive energy from herring, herring receive energy from krill, and krill receive energy from phytoplankton.
Explanation:
A food chain represents the unidirectional network or path of the flow of energy and the matter in an ecosystem.
The aquatic food chain begins from the small or microscopic organisms called phytoplankton which is autotrophic therefore are considered the producers.
The phytoplanktons are eaten by a variety of other organisms in which the krills which live in the deep sea feeds on these phytoplanktons. The krills are the primary consumers who are eaten by small fish like herring which acts as secondary consumers. These herring are then eaten by the bird-like puffins and large fish which acts as tertiary consumers.
Thus, Option-A is the correct answer.
What part of the nephron would be most adversely affected by a condition that destroyed simple squamous epithelium?
Answer:
The collecting tube will be affected in its lining and also in the area of the renal glomerulus.
Explanation:
Therefore, in this way, the balance of solute concentrations in the body and glomerular filtration will be affected in the nephron unit.
Based on the similarities and differences you identified earlier between T. Brucei, P. Falciparum, and T. Cruzi, do you predict that P. Falciparum and T. Cruzi undergo similar antigenic variation? Why or why not?
Answer:
Yes, P. Falciparum and T. Cruzi undergo similar antigenic variation because of repetitive genomes evolved by time.
Explanation:
Living (i.e., actively proliferating) repeats are dynamic elements which reshape their host genomes by generating rearrangements, creating and destroying genes, shuffling existing genes, and modulating patterns of expression. Dead repeats (i.e., those which are no longer able to proliferate) constitute a palaeontological record, which can be mined for clues about evolutionary events and impetus. The dynamic nature of repeats leads to a rapid evolutionary divergence that can be used in species identification and phylogenetic inference. Repeats can also provide passive markers for studying processes of mutation and selection.
The genomes of these protozoan parasites, like all eukaryotic genomes, have been colonized by diverse repetitive elements. Repetitive sequences can be artificially divided into two groups: interspersed repeats and tandemly repeated DNA. P. falciparum undergoes antigenic variation ans similar anitgenic variation is present in t. cruzi because of repetitive sequences resembling each other.
P. Falciparum and T. Cruzi do undergo similar antigenic variation.
Explanation:P. Falciparum and T. Cruzi do undergo similar antigenic variation. Antigenic variation refers to the ability of a pathogen to change its surface proteins in order to evade the immune system. Both P. Falciparum and T. Cruzi are parasitic pathogens that infect humans and undergo antigenic variation. For example, P. Falciparum causes malaria by infecting red blood cells, and it is known to switch the expression of its surface proteins, such as the var genes. T. Cruzi, the causative agent of Chagas disease, also exhibits antigenic variation through the expression of different surface proteins called mucins.
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The Chesapeake Bay faces many issues that affect the water, animals, and environment. Which issue causes a loss of energy in the food chain due to the lack of growth of bottom-dwellers; like worms and clams?
A.) a catalyst
B.) Bubbling in oxygen
C.) Decreasing the temperature
D.) Adding more hydrogen peroxide
Dead zones in the Chesapeake Bay, resulting from fertilizer runoff leading to oxygen depletion, cause the loss of energy in the food chain affecting bottom-dwellers.
Explanation:The issue that causes a loss of energy in the food chain due to the lack of growth of bottom-dwellers like worms and clams in the Chesapeake Bay is related to the creation of dead zones. These areas emerge largely due to excess nutrients from fertilizer runoff, which lead to oxygen depletion. The hypoxic or anoxic conditions in these zones make it impossible for many species that dwell at the bottom of the bay, such as worms and clams, to survive, disrupting the food chain and affecting the overall health of the ecosystem.
A 5-year-old boy is noted to have a grade II systolic murmur and a widely split S2 murmur on cardiac exam. His vital signs are stable and he has been asymptomatic. Which of the following statement is accurate regarding this child's presentation and likely condition?
A. No further work-up for a presumed venous humB. Chest x-ray, ECG, and echocardiogram would be indicated as next steps to work up a presumed ventricular septal defectC. This patient's murmur is caused by flow through the pulmonary outflow tract and should be evaluatedD. The patient should be scheduled now for cardiac catheterization
Answer:
C.
Explanation:
The murmur of this patient is possibly caused by an atrial septal defect that induces excessive blood flow through the pulmonary outflow tract, and should be examined.
B is right assess measures but this is not a ventricular septal defect (Vsd) that normally has a holosystolic murmur and a second heart sound that splits with respiration component.
Hence, the correct option is C.
Which of the following functions is NOT correctly matched with its description?
A) absorption: transport of chemically digested nutrients into the blood or lymph B) propulsion: physical breakdown of ingested food in the GI tract
C) ingestion: taking food into the digestive tract
D) mechanical breakdown: churning movements in the GI tract
Answer: B) propulsion
Explanation: Propulsion is the movement of the ingested food in the GI Tract.
The function that is not correctly matched with its description is propulsion.
Explanation:The function that is NOT correctly matched with its description is B) propulsion: physical breakdown of ingested food in the GI tract.
Propulsion is the movement of food through the digestive tract. Mechanical breakdown, on the other hand, refers to the physical breakdown of ingested food in the GI tract. The other functions are correctly matched with their descriptions: absorption is the transportation of digested nutrients into the blood or lymph, ingestion is taking food into the digestive tract, and mechanical breakdown refers to churning movements in the GI tract.
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Which of the statements is true? Dizygotic twins must be of the same gender, but monozygotic twins can be of different genders. The tendency to produce monozygotic twins often runs in families and is influenced by genetic factors, whereas genetic factors seem to have no impact on the occurrence of dizygotic twins. Monozygotic twins develop from one egg fertilized by two sperm, whereas dizygotic twins develop from two eggs fertilized by one sperm. Dizygotic twins, on average, have 50% of their genes in common, whereas monozygotic twins have 100% of their genes in common. Dizygotic twins usually look more alike than do monozygotic twins.
Answer: D.
Explanation:
Dizygotic twins are formed due to the fertilisation of two eggs by two sperms which get implanted in the uterus and develops two fetuses, that s why they have 50% of genes in common. whereas monozygotic twins form from a single fertilized egg that splits and so they have 100% of their genes in common.
Hence, the correct statement is D.
The renal artery enters the kidney at this indented area. what is tthis this indented area?
Answer:
the renal hilus?
Explanation:
Answer:
the renal hilnus
Explanation:
it is the entry and exit point of the arteries, which the lead into the cavity below
Which of the following molecular motors is associated with intermediate filaments?
a. kinesins
b. dyneins
c. myosins
d. none of the other answers
e. a, b and c
Answer: d. none of the other answers
Explanation:
Enzymes that turn chemical energy into mechanical work are molecular motors.
There are three main components of cytoskeleton including microtubules, actin filaments and Intermediate filaments. Only actin filaments and microtubules carry the motor-driven transport on the cytoskeleton.
The most important feature of intermediate filaments is to provide the plasma membrane with mechanical support where it comes into contact with the extracellular matrix and other cells.
Unlike microtubules and microfilament , intermediate filaments are not involved in motility of the cells, hence do not associat with molecular motors.
Hence, the correct option is d.
Which devices have you used today? Check all that apply.
I a cell phone
a computer
I a motor vehicle
a gaming system
a television
I a microwave
I a toaster
Answer: cell phone, computer, television, and gaming system
Explanation:
you dont have to use my answer just put what YOU have used today
The Na K ATPase is also known as the Na -K pump. It is responsible for maintaining the high extracellular sodium ion concentration and the high intracellular potassium ion concentration. What happens immediately after the pump hydrolyzes ATP?
Answer: The options are missing from the question.
A) Na+ is bound
B) ADP is bound
C) The pump is phosphorylated
D) The pump changes conformation
The correct answer to the question is option C
THE PUMP IS PHOSPHORYLATED
Explanation: Sodium potassium pump (Na+ K+ pump) is a mechanism that uses active transport to move sodium Na+ and potassium K+ in and out of cellular compartments (intracellular and extracellular) inorder to maintain a gradient. It is responsible for maintaning a high extracellular sodium ion concentration and a high intracellular potassium ion concentration.
Once the sodium-potassium pump hydrolyses ATP,the pump will become phosphorylated (transmission of signal throughout the cell) lowing the affinity of the pump to sodium,this causes 3 sodium ions to move out of the intracellular compartment into the the extracellular compartment. The pump further brings two potassium ions together causing a dephosphorylation(inhibition of signal transmission throughout the cell) and then moves the 2 potassium ions out of the cell. This mechanism continues till there is a higher extracellular sodium concentration and a high intracellular potassium concentration therefore achieving the desired gradient(optimum)
In flowering plants, plasmodesmata are narrow channels through cell walls that connect the cytoplasms of adjacent cells. An explanation of how plant cells communicate across cell walls will most likely refer to the diffusion through plasmodesmata of which of the following?a) Membrane-bound organellesb) Condensed, duplicated chromosomesc) Branched polysaccharidesd) Small, water-soluble molecules
Answer:
Option-D
Explanation:
Plasmodesmata are the plasma membrane lined pores present in the cells of the plants. Inside these pores runs a closed tubelike structure which is an extension of the endoplasmic reticulum.
The plasmodesmata allows cell to cell communication which involves symplast mode of transport that is through its cytoplasm.
The small water soluble molecules like amino acid and sugars can easily pass through these plasmodesmata via diffusion. The large molecules can be transported through these plamodesmata through selective diffusion.
Thus, Option-D is the correct answer.
An explanation of how plant cells communicate across cell walls will most likely refer to the diffusion through plasmodesmata is Small, water-soluble molecules.
Small water soluble molecules often cross the membrane through the process of Diffusion. It is known as passive transport due to the fact that no external energy is used.
Polar molecules, such as water and small water-soluble molecules example urea, chloride ions, sodium ions etc. often
diffuse across membranes through the water-filled channels formed by membrane proteins.
Plasmodesmata are refered to ad connections through which cells communicate chemically with one another via their thick walls.
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Why is brazil’s president jair bolsonaro allowing the destruction of the rainforest?
Explanation:
Many scientists and environmentalists blame the deforestation spike on President Jair Bolsonaro's aggressive policies to support mining and ranching and to dismantle environmental protections.
Brazil's President Jair Bolsonaro is allowing the destruction of the rainforest for a variety of reasons, including:
1. Economic development: Bolsonaro has argued that the Amazon rainforest should be exploited for its natural resources, including timber, minerals, and agricultural land, in order to boost Brazil's economy. This has led to an increase in deforestation, as trees are cut down to make way for farms, mines, and other development projects.
2. Support from powerful interest groups: Bolsonaro has received support from powerful interest groups, including agribusiness, mining, and logging companies, who stand to benefit from the destruction of the rainforest. These groups have lobbied for policies that allow for more deforestation, and Bolsonaro has responded by loosening environmental regulations and cutting funding for conservation efforts.
3. Personal beliefs: Bolsonaro has expressed skepticism about climate change and the importance of protecting the environment, and has criticized environmentalists and indigenous groups who seek to protect the rainforest. He has also argued that Brazil should have sovereignty over its own natural resources, and should not be subject to international pressure to protect the Amazon.
Overall, Bolsonaro's policies and actions have contributed to an increase in deforestation and destruction of the Amazon rainforest, which has sparked widespread criticism and concern from environmentalists, indigenous groups, and the international community.
Describe why is it more difficult than ever before for humans to make decisions. List the different parts of the brain that fo through when making decisions.
Answer:
According to Irvin D. Yalom, we find it difficult to make a decision for fear of making a mistake with what we choose, for feelings of guilt and remorse for what could happen, and for the anxiety that comes with taking the action.
Explanation:
According to data obtained by Dr. William Newsome, decisions are made by a neuronal group located in the frontal lobe that is responsible for integrating the information and then making a single decision.
This means that to make a decision, all the details of the decisions to be taken must be taken into account so that the frontal lobe decides which of these characteristics could release more endorphins knowing that the person made a good decision.
Answer:
Explanation:
Today people suffer more for indecisive mind and there are many causes behind it:
People are busier and they have narrow world. So, they do not have reliable friend to discuss before taking decision. They have lack of knowledge to the reality. They fail to understand what a reasonable way for taking decision is.
Now people are so isolated that they suffer from depression, anxiety, worries and so on. Such demerits of the mind prevent one to take right decision.
Now most of the people, especially in the young generation, have little control over their emotion. They have least patience, and self control. Naturally they cannot take decision.
Neuroticism or emotional instability causes bar for taking decision.
The main psychological facts that cause indecision are phobic reaction, anger, depression, paranoid thoughts and so on. They have great effect in the brain. The stimulation of the brain works haphazardly. It needs counselling. Mainly the students and young generation suffer from this type of deformities in the brains. Various psychiatric clinics also establish these views.
List the different parts of the brain that for through when making decisions.
dorsolatory prefrontal cortexorbitofrontal cortexventromedial prefrontal cortexIn rabbits, black fur is dominant to white fur.
A) if you cross a BB male with a Bb female, what are the possible genotypes and phenotypes of the offspring? What is percentage chance of each type?
Crossing a BB male with a Bb female:
The Punnett Square will look like this:
BB BB
Bb Bb
The percentage will be as follows:
- You will have 50% homozygous dominant (BB)
- You will have 50% heterozygous (Bb)
Now, for the phenotype, you will have 100% black fur, since B is dominant and is prevalent in 100% of all the breeds.
For the genotype, you have 50% BB and 50% Bb
If you cross a BB male with a Bb female, you will obtain a 50% BB genotype and a 50% Bb genotype as well as a 100% black phenotype.
The genotype is the sum total of the genes that an organism inherits from its parents. These genes occur in pairs called alleles. In each allele, one gene is dominant and the other gene is recessive.
If a cross is performed and the dominant gene is present, it is always expressed. The recessive gene is only expressed when a pair of alleles are composed of two recessive genes. In this case, the black fur is dominant to white fur. The black fur is shown as B while the white fur is shown as b.
Performing a cross of the BB male and Bb female, we can see that we will obtain a 50% BB genotype and a 50% Bb genotype as well as a 100% black phenotype.
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A millage rate is derived by A. dividing the tax requirement by the tax base. B. multiplying the tax base times the tax requirement. C. adding an inflation factor to the prior year's tax rate. D. dividing the tax base by the tax requirement.
Answer:The millage rate is derived by dividing the funds the city and county government need to operate, the total assessed value of real estate.
Explanation:
A flowering plant obeys Mendelian genetics where the yellow flower is dominant over pink flowers. You are given a yellow flowering plant.
What type of plant would you use to perform a test-cross with this plant to determine its genotype?
a) True breeding yellow flowering plant
b) F1 generation plant
c) True breeding purple flowering plant
d) True breeding pink flowering plant
Answer:
option D
Explanation:
This is to test for the genotype of an organism that shows the dominant phenotype for a particular trait trait. To perform a testcross in determining the genotype of a plant, a true breeding pink flowering plant is usually utilized.
Linda thomas was diagnosed as having a/an _______. This is a benign tumor of the pancreas that causes hypoglycemia by secreting insulin.
Answer:
insulinoma
Explanation:
Linda Thomas was diagnosed with an insulinoma, a benign tumor of the pancreas that secretes excess insulin, causing hypoglycemia. Unlike Type I diabetes, which leads to high blood sugar levels (hyperglycemia), an insulinoma causes low blood sugar levels (hypoglycemia). Both conditions affect blood sugar levels in opposite ways.
Explanation:Linda Thomas was diagnosed as having a benign tumor of the pancreas that causes hypoglycemia by secreting insulin. This type of tumor is known as an insulinoma, which is a condition where the tumor cells produce an excess amount of insulin, leading to lower blood sugar levels. Hypoglycemia is the medical term for having lower than normal blood sugar levels. Unlike Type I diabetes, which is characterized by the pancreas's failure to produce insulin, leading to hyperglycemia (high blood sugar levels), an insulinoma causes the opposite effect, the lowering of blood sugar levels (hypoglycemia).
Type I diabetes and pancreatic tumors (such as insulinomas) have opposite effects on the body's blood sugar levels. While Type I diabetes results in high blood sugar levels due to insufficient insulin production, insulinoma results in low blood sugar levels due to excess insulin production.
As you are waiting to be interviewed for a job, your heart rate, body temperature, blood pressure, and breathing begin to increase. These physiological changes are produced by the activation of the __________________nervous system.A) parasympatheticB) sympatheticC) somatic relating to the body, especially as distinct from the mind. D) central
Answer:
B.sympathetic is the correct answer.
Explanation:
When the sympathetic nervous system gets activated following physiological changes are produced such as heart rate increases, body temperature increase raise and breathing rates increase.
The sympathetic nervous system is a part of the autonomic nervous system and its function is to control the blood flow through the various organs and stress conditions.
The sympathetic nervous system gets activated in the stress conditions, Thus in this situations physiological changes are produced because of stress develop before the interview and this results in the activation of the Sympathetic nervous system.
We can calm our sympathetic nervous system by following ways such as spending time in nature, meditation, prayer, massage, yoga.
A preganglionic sympathetic fiber traveling to the abdomen would synapse in which structures?
Answer:
Answered below.
Explanation:
The nerve fibres of the autonomic nervous system that connects the ganglia to the the central nervous system are called preganglionic fibres. They are divided into sympathetic preganglionic fibres and parasympathetic preganglionic fibres and both have acetylcholine as their neurotransmitter.
The sympathetic preganglionic is shorter compared to the parasympathetic preganglionic fibres. They originate from the hypothalamus and brainstem and project to the ganglia non the spinal cord. A ganglion is a cluster of nerves outside the central nervous system.
The preganglionic sympathetic fibres originating from T1-T2 innervate the cervical ganglion which innervates the muscles of the pupils (dilators).
The postganglionic fibres originating from the preganglionic fibres of T11-L3 passes through splenic, celiac and mesenteric ganglia to innervate the kidneys and renal vessels.
The function of pulmonary ventilation is to ___________.
a. remove carbon dioxide from the blood.
b. maintain adequate alveolar ventilation.
c. remove air from dead air space.
d. supply oxygen to the blood.
e. prevent gas exchange in the bronchioles
Answer:
The function of pulmonary ventilation is to b. maintain adequate alveolar ventilation.
Explanation:
Pulmonary ventilation refers to the movement of air into and out of the lungs, so its main function is to maintain adequate alveolar ventilation. The air moves out of the lungs when the pressure inside the lungs is greater than the pressure in the atmosphere. In the lungs, Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood. That's how the oxygen gets into the bloodstream.
Pulmonary ventilation aids in gaseous exchange. It removes carbon dioxide from the blood, supplies oxygen to the blood, and maintains adequate alveolar ventilation.
Explanation:The function of pulmonary ventilation is a combination of the options given. It includes the removal of carbon dioxide from the blood, supplying oxygen to the blood, as well as maintaining adequate alveolar ventilation. When you breathe, the process of pulmonary ventilation enables gaseous exchange, where oxygen is absorbed into the blood, and carbon dioxide, a waste product, is expelled from it. So the correct answer is a combination of a, b, and d.
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Tongue-curling in humans is a dominant genetic trait.
a) suppose a man who is Tt for tongue-curling marries a woman who is also Tt for this trait. What are the possible genotypes and phenotypes of the offspring? What is percentage chance of each type?
Answer:
-Genotypes: 25% TT, 50% Tt, 25% tt.
-Phenotypes: 75% have the trait for tongue curling, the other 25% do not have the trait for tongue curling.
-Percentage change of each type: 25% TT (homozygous dominant), 50% Tt (heterozygous), and 25% tt (homozygous recessive).
Explanation:
So to calculate the probably of off spring, we usually make a Punnett square.
Since a Tt man marries a Tt woman, they produce "offspring" (babies) that look like this in a Punnett square:
TT Tt
Tt tt
Looking from this Punnett square, we have one that is TT, two that are Tt, and one that is tt, a total of four. Your genotypes are the genetical traits, so out of the four, you take a percentage and calculate the genes: 25% TT, 50% Tt, and 25% tt. Your phenotypes are your physical traits, so 75% will have the "tongue-curling" trait as the trait T is dominant in three of them (TT, Tt, and Tt), and the other 25% will NOT have the trait.
If both parents are Tt, then both types of offspring will be produced, one with the trait of tongue curling and another without it. 75% will be dominant, and 25% will be non-tongue curlers.
What is a monohybrid cross?A monohybrid cross involves a trait such as tongue curling. This gene has two variations, one of which is for tongue curling and is dominant over the other. Another form is recessive and forms a non-curling type of tongue.
The curling gene is completely dominant over others and can express in both TT and Tt conditions. tt only expresses the recessive type, which is a non-curling tongue.
Here, both parents are Tt. So two types of offspring will be formed. TT will be 25%, Tt will be 50%, and the rest 25% is tt. Three of the four offspring are dominant, while one is recessive. The punnett square is explained below in the image.
Hence, from a heterozygous parent cross,75% will be dominant, and 25% will be non-tongue curlers.
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You drove through Iowa in the spring and noticed that along a stretch of several kilometers, every third fence post had a male red-winged blackbird perched on it defending its nesting territory. This is an example of:________.
Answer:
You drove through Iowa in the spring and noticed that along a stretch of several kilometers, every third fence post had a male red-winged blackbird perched on it defending its nesting territory. This is an example of uniform dispersion.
Explanation:
There are usually three dispersion patterns :
ClumpingUniform dispersion Random dispersionClumping is the most common.
Uniform dispersion occurs when
resources are scarce Individuals are evenly spaced in a habitat Due to competition or territorial behaviorWhile Random dispersion occurs when resources are plentiful.
Hence ,This is an example of uniform dispersion.
A friend receives the results of a urine test and finds that dissolved nutrients, such as amino acids and glucose, are present in his urine. You deduce that part of his kidney is not functioning properly. Which part is most likely malfunctioning?
Answer:
Proximal tubules.
Explanation:
The proximal tubules make up a significant portion of the kidneys and they are also the site of active solute secretion, hormone production, and many of the metabolic functions of the kidney. This segment of the nephron in kidney has two main functions: absortion and secretion. A hundread percent of organic solutes, such as glucose and amino acids are reabsorbed, that's why they should not be present in his urine.
A small, thin, 4-year-old boy presents with an audible continuous murmur that is heard near the left proximal clavicle and is present throughout the cardiac cycle. The murmur is louder in systole than diastole. Which of the following conditions is most likely the cause of this murmur?
A. Atrial septal defect
B. Mitral stenosis
C. Patent ductus arteriosus
D. Right ventricular hypertrophy
E. Ventricular septal defect
Answer: C. Patent ductus arteriosis
Explanation:
Patent ductus arteriosis is a physiological condition in which the ductus arteriosus does not close after birth. This results in the flow of the oxygenated blood from the left heart to flow back to the lungs by passing through the aorta.
The blood in the aorta is at high pressure. This results in continuous murmur due to the generation of the constant pressure gradient in the diastole and the systole, that forces the blood from the aorta to the pulmonary artery. The murmur sound is louder in the systole than in diastole.
Based upon the above explanation, Patent ductus arteriosis is the condition that is responsible for the murmur.
Which of the following best completes this example of heat transfer by convection? As a pot of water is heated over an open flame, heat is transferred from
a. The pot’s handle to your hand.
b. The flame to the bottom of the pot.
c. The bottom of the water to the top of the water.
d. The hot water to a metal spoon used for stirring
Heat transfer by convection from the bottom of the water to the top of the water.
Explanation:
Convection takes place in case of liquids. In case of liquids the molecules of water are very loosely packed. Convection takes place in a circular form. When the liquid is heated up the water vapor goes up the cold water come to take the empty places , this way convection takes place. In this question , when the water is heated first the bottom of the water gets heated up and gradually the water at the top becomes hot.
In rats, the allele for long whiskers is dominant to the allele for short whiskers. At another gene locus, a dominant allele produces whiskers and the recessive allele produces a rat with no whiskers. The alleles at these 2 gene loci assort independently. Two rats that are heterozygous at both gene loci are crossed. What percentage of the offspring do you expect will have whiskers? ( Enter the number only without the percent sign. For example, enter 100% as 100 and enter 12.5% as 12.5 )
Answer:
25
Explanation:
if you make a punnet square you will see that the allele for having whiskers is 25%
True or false: The body temperatures of island tortoises always closely match the temperatures in their environments. True or false: The body temperatures of island tortoises always closely match the temperatures in their environments. True False
Explanation:
The given statement is false because tortoise is an ectotherm which means they change their temperature according to the change in external environment
The body temperature of ectotherms does not necessarily match the ambient temperature
For example, if a tortoise is basking in a sunny field, the solar radiation might raise its body temperature well above ambient, and the tortoise's low surface area/volume ratio would cause it to retain that heat for a long time
Imagine that you wanted to know if speciation is more rapid in plant groups pollinated by bees or hummingbirds. To do this, you identified 20 genera of angiosperms that contained species pollinated by both types of animals. There were substantially more species in the groups that were pollinated by bees. What conclusions can you draw from your data?A)Hummingbirds promoted speciation more than did bees.B)The rates of speciation were similar in groups pollinated by hummingbirds and bees.C) Hummingbirds promoted speciation less than did bees.D)Each genus should be split into two new genera.
Answer:
C) Hummingbirds promoted speciation less than did bees
Explanation:
The correct conclusion that can be drawn from the data is that hummingbirds promoted speciation less than did bees.
Speciation is defined as the appearance of new species in an environment and it is directly proportional to the number of species.
Hence, the higher the number of species found under each pollination category, the higher the speciation.
In this case, more species were found under the bee pollinated category compared to the hummingbird pollinated category. It thus means that the bees promoted speciation more than the hummingbirds.
The correct option is C.
Answer:
C) Hummingbirds promoted speciation less than did bees.
Explanation:
It is possible that honey bee pollination' conducted at higher rates of speciation in the angiosperms. However, it is important to note that the C) statement is just a hypothesis and further experiments should be carried out to confirm the role of bees in the speciation of this group
use the drop down menus to complete each statement . the drop down menu answer choices are the same , a. inner planets or b. outer planets . somebody help me
Answer:
outer planets, inner planets,inner planet and outer planet
Explanation:
on edge here i give you this answer i'm in 8 grade
The cow Bos primigenius has a smaller brain and larger eyes than closely related wild species of ungulates. These traits co-occurred with traits for increased milk production and larger muscle size were selected for by farmers breeding the domesticated cow. This is an example of which process?
Answer:
Artificial selection
Explanation:
The process is an example of artificial selection.
Artificial selection is process in which members of a population with desired features/characteristics are deliberately favored to reproduce within the population.
The process which is also referred to as selective breeding is used by man to selectively develop particular phenotypic traits in farm animals.
In this case, the desired traits are increased milk production and larger muscle size and these two traits co-occurred with having smaller brain and larger eyes. Hence, the latter traits are selected for in order to get the desired traits.
Final answer:
The observed traits in domesticated cows are the result of artificial selection, where humans selectively bred animals to enhance certain characteristics like milk production and muscle size, demonstrating both artificial selection and biocultural coevolution.
Explanation:
The traits observed in the domesticated cow Bos primigenius, such as a smaller brain, larger eyes, increased milk production, and larger muscle size, are the result of artificial selection. This process involves humans selectively breeding animals or plants to produce specific traits. Farmers selected for traits that were beneficial to them, like more milk and muscle, which over generations led to the domesticated cows we see today. This process intensified the human-animal relationship, as early herders realized they could benefit from live animals for products like milk, rather than just meat.
Moreover, the phenomenon of biocultural coevolution illustrates the interplay between the biology of human populations and their cultural practices of domestication. As farmers bred animals with desirable qualities, their own genetic predispositions, such as lactose tolerance, also evolved to optimize the use of those domesticated animals.
In summary, the selective breeding carried out by farmers which led to traits like increased milk production and larger muscle size in domesticated cows is an example of artificial selection, a cornerstone of both past and present agricultural practices.