The fact that the majority of human newborns weigh around 7 pounds is a reflective of stabilizing selection. Thus, the correct option is B.
What is Stabilizing selection?
Stabilizing selection is a kind of natural selection in which the population mean of a species stabilizes on a particular non-extreme trait value with majority of the population. This is the most common mechanism of action for the natural selection of a species because most of the traits do not appear to change drastically over a period of time.
Stabilizing selection is beneficial as it tends to narrow the variation in the phenotype of a population over time. This is the most common type of selection observed because it is associated with the adaptation of an organism to their environment. Thus, the weight of human newborns which is found to be 7 pounds for majority of individuals is an example of stabilizing selection.
Therefore, the correct option is B.
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In order to grow more of a certain type of cell, a scientist should:
a.design a model of that type of cell.
b.observe the cell with a light microscope.
c.expose the cell to an electron microscope.
d.prepare a culture of that type of cell.
Which of the following is not evidence for the law of conservation of mass during cellular respiration?
The somatic nervous system contains nerves that control: skeletal muscles internal organs glands cardiac muscles
Out of the following choices;
A) skeletal muscles
B) internal organs, joints, and glands
C) skeletal muscles, skin, and glands
D) smooth muscles, cardiac muscles, and glands
The answer is A. This is because of the somatic nervous system control voluntary mechanisms of the body. The alternative is the autonomic nervous system that controls the involuntary mechanisms. The somatic nervous system comprises of the afferent neurons and efferent neurons.
The definition of mutation is "any heritable change in the genetic material." the qualifier "heritable" is necessary because: most changes in the genetic material are repaired soon after they occur. changes in the genetic material occur at random along the genome. changes in the genetic material occur without regard to the needs of the organism. most changes in the genetic material are harmful to the organism.
The animal phylum most like the protists that gave rise to the animal kingdom is _____. see concept 33.1 (page 688)
Answer: Porifera
The animal phylum porifera constitute the sponges that is most like the protists that gave rise to animal kingdom. One evidence is that they have been defined as multi-celled immobile animals or metazoans that have water intake and outlet openings, which is connected by chambers lined with choanocytes or cells with whip-like flagella. Another evidence that supports this includes the lack of true tissue in sponges.
The _______ is responsible for cellular respiration in eukaryotic cells
1. What do bone marrow and the epidermis have in common? (1 point)
They are both sites of new cell formation.
They both contain structures that assist the body in cooling down if overheating
occurs.
They both contain or are associated with sensory neurons.
They are both involved in waste disposal functions.,
Answer:
The correct answer would be They are both sites of new cell formation.
Bone marrow is the semi-solid tissue found in the cavities of the bone.
It serves as the site of production of blood cells.
Epidermis refers to the outermost layer of the skin. Stratum basale layer of the epidermis acts as the site of production of new epidermal skin cells.
Which of the organelles in the animal cell is involved in the disposal of cellular waste that is not transported out of the cell?
A.
mitochondria
B.
nucleus
C.
endoplasmic reticulum
D.
lysosomes
What do fungi have in common with animals? their cells do not store dna within the nucleus. they are all unicellular. they are heterotrophs. they make their own food from sunlight?
Answer:
Option C, they are heterotrophs
Explanation:
Both fungi and animals do not have chlorophyll with in them and thus they are not able to produce their own food from sunlight. Being unable to produce their own food, both fungi and animal depends on other organisms especially the producer for their food and nourishment. Hence, they both are heterotrophs.
Some of the animals are unicellular while there are several animals that are multi-cellular too. Hence option B is incorrect.
Also both fungi and animal have DNA with in their cells and hence option A is also incorrect.
Option C is correct
Fungi and animals share several common characteristics. Both are heterotrophs that rely on external organic compounds for energy, and their cells share structural similarities such as the presence of chitin and the storage of carbohydrates as glycogen. Regardless, fungi also exhibit unique traits including their role as key decomposers in the ecosystem.
Explanation:Fungi, much like animals, are heterotrophs; they obtain their energy and carbon from complex organic compounds as they are incapable of photosynthesis. This essentially means that their mode of nutrition involves consuming and breaking down organic matter rather than producing their own nutrients through sunlight like plants do.
Furthermore, parallels can be seen in the structure of their cells. The cell walls of fungi are composed of chitin, a substance also found in the exoskeletons of arthropods, while their cells contain mitochondria and other complex internal systems such as the endoplasmic reticulum and Golgi apparatus. Like animals, fungi store carbohydrates in the form of glycogen.
However, it's important to note that, despite these similarities, fungi also demonstrate distinct characteristics. For example, fungi absorb nutrients across the cell surface and play a crucial role as decomposers in the ecosystem, helping to recycle nutrients by breaking down organic materials into simple molecules.
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What is an antigen and antibody? and what are their difference(s)?
There are a total of 5 types of antibodies, each of which is different. They are IgA, IgE, IgG, IgM, and IgD.
IgA protects the surfaces of the body which receive exposure to foreign, outside substances.
IgE causes a reaction in the body against foreign substances, including animal dander, pollen, and fungus spores. These antibodies are part of allergic reactions to some poisons and certain medications. Those with allergies tend to have high quantities of this type of antibody.
IgG plays a key role in fighting infections of a bacterial or viral nature. These are the only antibodies that are able to cross the placenta of a pregnant woman, offering protection to the fetus while still in utero.
When an infection occurs, IgM antibodies are the very first type of antibodies to be made as a response. They will lead to other cells in the immune system destroying foreign substances.
Experts are still unclear as to what exactly IgD antibodies d
What are the products of noncyclic photophosphorylation?
The diagram below represents a human organ system the major function of the system is to:
1. Provide immunity essential for survival of each individual in a population.
2. Provide cells that are necessary for the survival of the species.
3. Produce chemical messages are necessary for nerve cell development.
4. Control the passage into and out of a developing fetus.
Please choose the answer for me please. I need help with that question and explain why it is the answer please so I can understand.
What is the density of a mineral with a mass of 41.2 g and a volume of 8.2 cm3? 49.4 g/cm3 5.02 g/cm3 0.19 g/cm3 337.8 g/cm3
Answer:
Density of the mineral is equal to [tex]5.02 \frac{g}{cm^{3} }[/tex]
Explanation:
The density of a substance is equal to mass of the substance divided by its volume.
Thus, the formula of density (d) is as follows
[tex]d = \frac{M}{V}[/tex]
Where, M represent the mass of a substance
and V represents the volume of the same substance
Substituting the given values in above equation, we get -
[tex]d = \frac{41.2}{8.2} \frac{g}{cm^{3} } \\d = 5.02 \frac{g}{cm^{3} } \\[/tex]
Hence, option B is correct
The triangular depression in the medial surface of each lung, where blood vessels and the primary bronchi enter, is the:
Is examination of the back an organ or body area examimnation?
A fossil skeleton with a basin-shaped pelvis, a central foramen magnum, and arched feet would most likely be classified as a(n) __________.
Answer:
These characteristics are observed in biped organisms
Explanation:
A biped organism is able to use two legs for walking. Bipedalism is an evolutionary adaptation produced by several skeletal changes shared in all bipedal species. The central foramen magnum, a short wide pelvis, and arched feet are factors that influence bipedalism, these features are required to achieve a better balance during the bipedal movement
Tommy lives at 60 degrees north latitude. He watches the day's weather forecast and learns that the polar jet stream will be positioned over his town today.
Image courtesy of NOAA
Judging from the above diagram, Tommy could predict ______ and _______ today.
Tommy could predict low air pressure and precipitation
Answer:
low pressure; precipitation
Explanation:
:)
Compare and contrast signs and symptoms of emphysema and chronic bronchitis
Explain the mechanisms for movement of materials across cellular membranes anatomy
Cells use mechanisms like active transport, passive diffusion, facilitated diffusion, co-transport, and endocytosis to move materials across their membranes, some requiring ATP and others happening passively supporting cellular function.
Mechanisms for Movement of Materials Across Cellular Membranes
Cells transport materials across their membranes using several mechanisms, each playing a crucial role in the maintenance of cellular function. The selective permeability of the plasma membrane allows for different methods of transport, some requiring energy and others occurring passively.
Active transport is a process where cells use ATP to move substances against their concentration gradient. Passive diffusion is the movement of substances from a region of higher to lower concentration without energy use. Facilitated diffusion involves carrier proteins to help substances move down their concentration gradient. Co-transport, or secondary active transport, uses the movement of one molecule to drive the transport of another. Lastly, endocytosis is a form of active transport where the cell membrane engulfs material to bring it into the cell.
These mechanisms ensure that essential nutrients, ions, and other substances can be absorbed, while waste products are secreted or removed, maintaining the necessary conditions for cellular survival and function.
What has occurred when a solid forms out of the mixing of two liquids in a chemical reaction?
The most frequent way in which small regulatory rna molecules exert their effects is by the most frequent way in which small regulatory rna molecules exert their effects is by binding to a repressor and repressing enzyme transcription. signal transduction. base pairing with other rna molecules that have regions of complementary sequence. acting as an inducer that then binds to an activator protein to allow transcription to proceed.
14. Which of the following happens when ice melts?
A. Energy flows from the ice to its surroundings
B. Water molecules move from their fixed position.
C. Water molecules lose energy
D. The temperature of the ice increases as it melts
(BRAINLY FOR CORRECT ANSWER, PLEASE HELP)
In cattle, a single gene with two alleles determines fur color. The fur can be red, white, or roan. Roan fur has both red and white hair. Which of the following is true about alleles for fur color in cattle?
The allele for roan fur color is dominant over red and white fur color.
The allele for red fur color is dominant over white and roan fur color.
The roan and white alleles are expressed independently of the other.
The red and white alleles are expressed independently of the other.
Final answer:
The answer states that the red and white alleles for fur color in cattle are expressed independently of each other, which is an example of codominance resulting in the roan phenotype.
Explanation:
The question is about the inheritance of fur color in cattle, which is determined by a single gene with two alleles. The correct answer to which of the statements is true about alleles for fur color in cattle is that 'the red and white alleles are expressed independently of the other'. This concept is known as codominance, where both alleles contribute to the phenotype. In the case of roan cattle, the presence of both red and white fur is due to the expression of both the red and white alleles independently, leading to patches of both colors in the fur.
The correct option is B i.e. The allele for red fur color is dominant over white and roan fur color.
In cattle, fur color is determined by a single gene with two alleles: red (R) and white (R'). The fur can be red, white, or roan. Roan fur, which exhibits both red and white hairs, occurs in heterozygous cattle with the genotype RR'. This example illustrates codominance, where neither allele is completely dominant or recessive, and both traits are expressed simultaneously in the offspring.The statement "The red and white alleles are expressed independently of the other" is correct. This demonstrates that roan and white fur colors are codominantly expressed when both alleles are present, as seen in roan cattle with both red and white hairs.Mutations are generally helpful to the organism.
a. True
b. False
In a plant cell, where are the atp synthase complexes located? select all that apply
In a plant cell, the ATP synthase complexes are primarily located in the inner mitochondrial membrane and the thylakoid membrane system of the chloroplasts.
Explanation:In a plant cell, the ATP synthase complexes are located in two major areas: the inner mitochondrial membrane and the thylakoid membrane of chloroplasts. The inner mitochondrial membrane houses the electron transport chain that pumps H+ ions across this membrane. The H+ ions then flow back through the membrane by way of ATP synthase, which catalyzes the formation of ATP.
In chloroplasts, the thylakoid membrane system contains the green photosynthetic pigment chlorophyll, where the light reactions of photosynthesis occur. This system involves photosystems I and II, the electron transport chain, and ATP synthase, which is integral for the creation of ATP, the cell's energy currency.
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The natural tendency of molecules to move from higher to lower concentrations is?
Diffusion Is the answer
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A client at 38 weeks of gestation is admitted to labor and delivery for the management of preeclampsia and is placed on a magnesium sulfate iv drip. explain the signs of magnesium toxicity for which the nurse should monitor.
socialization only happens within the family?
true
false
Explain the process of radiometric (radioactive dating) in your own words.
Which type of immunity defends against any type of invader?