Using the fluid mosaic model, a cell is actively capable of protecting itself against injurious agentsby:
a.closing down the membrane transport channels to hormones and chemicals.
b.altering the number and patterns of receptors to bacteria, antibodies, andchemicals.
c.increasing the number and sensitivity of lysosomes to destroy bacteria.
d.shifting the bilayer from hydrophobic to hydrophilic in response to antibodies.

mitosis refers to the parts of the original nucleus into two nuclei. On the other hand, meiosis refers to each having half chromosomes of the original cell.

in mitosis, there is the maintenance of chromosomes takes place while meiosis leads to a reduction in the no. of chromosomes. There are no variations in mitosis and variants occur in meiosis.

hence at last we can say that the above are the major difference between mitosis and meiosis. All of the explained differences will clearly lead to identifying them in particular. mitosis and meiosis plays a vital role in formation of gametes.

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Answer: A

Explanation:

The double helix describes the structure of DNA.Apr

Lighter colored mice were more likely to avoid predators and to reproduce. Therefore, option (D) is correct.

The lighter brown coloration of the deer mice in the Sand Hills of Nebraska is likely an adaptation that provides them with a survival advantage in their specific habitat. The light, sandy soil in the area may offer better camouflage for lighter colored mice, making them less visible to predators and increasing their chances of survival.

As a result, these mice would have a higher likelihood of successfully reproducing and passing on their lighter coloration traits to future generations.

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Answer:

No, I haven't learn that when I learn it I will teach you everything I know

The mode of inheritance in this pedigree is Y-linked.Therefore, the correct option is 3.

The genes that are found on the Y chromosome can be inherited through a process known as Y-linked inheritance. The X and Y chromosomes are the sex chromosomes of male mammals like humans.

The Y chromosome has fewer genes than the X chromosome because it is smaller. In addition, they are also necessary for sperm formation, healthy hormone output, and other features unique to males.

The pedigree given here is the case of Y-linked inheritance because each male generation is of showing this inheritance and the same is being followed in the family 5.Hence, the correct option is 3.

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The mode of inheritance in this pedigree is Y-linked.Therefore, the correct option is 3.

Y-linked inheritance is a type of genetic inheritance that occurs exclusively through genes located on the Y chromosome. The Y chromosome is one of the two sex chromosomes in humans, and it is typically only present in males.

Since females do not have a Y chromosome, they cannot inherit traits that are exclusively Y-linked. In males, however, any genetic variation on the Y chromosome is passed on directly from father to son.

Y-linked inheritance is relatively rare compared to other types of inheritance because the Y chromosome is small and contains relatively few genes. Some examples of traits that are known to be Y-linked include male-specific infertility, hair loss, and some types of color blindness.

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The change to the investigation that would remove the source of the error noticed by the scientist is to test a fourth group, in which the participants do not receive the mineral supplement (option A).

A controlled experiment is an experiment designed to replicate the main experiment in every way, except in respect of the one variable that is being tested, so as isolate the effect of that variable.

In other words, a control is introduced in the experimentation process. A control is group of test subjects left untreated or unexposed to the independent variable.

According to this question, a company is testing the effect of a mineral supplement on common cold. The experimental procedure is okay except that they didn't include a fourth group, which will serve as the control.

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Answer:  The green colour of the caterpillar is an example of a structural adaptation to avoid predators, while the release of bioactive chemicals by the plant to protect itself from the insect's attack is a physiological adaptation.

The green color of the caterpillar is an example of a structural adaptation to avoid predators, while the release of bioactive chemicals by the plant to protect itself from the insect's attack is a physiological adaptation.

Microbes, plants, and animals all live in surroundings that may alter to become drier, hotter, colder, more acidic, darker, and sunnier – with an almost unlimited number of variations.

Organisms have genetic benefits, such as a mutation that helps them survive the new environment, transmit the change down to their progeny, and the change becomes common enough in the population to be manifested as an adaptation.

Adaptations are key attributes that allow species to survive in their environments. There are three basic types of adaptations: structural, physiological, and behavioral.

Most creatures have a blend of all of these categories.

Structural adaptations are changes to the way an animal's body operates or appears on the outside. Body components (such as feet and ears) and body coverings (such as fur and scales) are examples of structural adaptations.

The interior workings of an animal's body are referred to as physiological adaptations. This involves changes in an animal's cells, molecules, and processes.

Behavioral adaptations describe how an animal behaves. This covers activities such as sleeping and conversing.

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Answer:

Explanation: true

Answer:

this is the answer if we can the this answer then write

In the case of left-sided heart failure, blood backs up into the lung circuit. You would expect Mr. Kalani to have pulmonary direct result of this edema.

Left-sided heart failure occurs when the heart becomes unable to pump blood to the whole body. This is because the heart can not handle the blood that is coming from the lungs.

When left-sided heart failure occurs, fluid leaks from the affected capillaries into the nearby tissues of the lungs circuit leading to pulmonary edema.

Excess fluid in the tissues is called edema and in the case of a left-sided heart failure, other parts of the body such as the feet, legs and ankle are equally swollen.

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The correct answer is "telomeres."

Telomeres are the protective caps on the ends of chromosomes that gradually shorten as a person ages. Each time a cell divides, the telomeres get shorter, and eventually, they become too short to protect the chromosomes properly. This can lead to cellular aging, DNA damage, and an increased risk of disease.

When the telomeres become critically short, the cell can no longer divide and enters a state of senescence or programmed cell death apoptosis.

Therefore, telomere length has been associated with aging and age-related diseases.

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Answer:

a. protects the environment.

Explanation:

Using water efficiently means using it wisely and not wasting it. When we use water more efficiently, we reduce the amount of water we consume, which helps to conserve water resources. This is important because water is a limited resource, and by using it efficiently, we can ensure enough water is available for future generations.

By using water more efficiently, we can also protect the environment. Water is essential for many ecosystems and habitats, and by conserving water, we can help maintain the balance of these ecosystems. Additionally, using water efficiently can reduce the need for energy-intensive water treatment and distribution processes, which can help reduce greenhouse gas emissions and mitigate climate change.

So, using water more efficiently helps protect the environment but also helps conserve water resources for the future.

Based on the listed characteristics of life, viruses basically do not meet the criteria to be considered a living creature. This is because they are not made up of cells which is the basic unit of life. In terms of reproduction, viruses are not capable to replicate because they need to infect a host cell in order to accomplish this process. They do not have metabolism to carry out life processes. They also are not capable of carrying out homeostasis. Viruses are not also capable of responding to stimuli. They also are not capable of growing and developing. Generally, viruses are dependent to their host cell.

On the other hand, viruses somehow are capable of undergoing evolution.

Answer:

A good soil for nurseries is the correct mixture of sand, clay and organic matter. Top soil from a forest is usually a good soil. To see if a soil is good try and roll it into a pencil sized roll. (The soil should be damp but not wet.)

Explanation:

Those that use biological theories to explain some of the biological factors that contribute to abnormal behaviour do so.

According to a biological hypothesis of deviance, a person's deviation from social standards is mostly a result of their biological make-up. Although it can be extended to informal deviance, the theory focuses primarily on formal deviance and uses biological explanations for criminality.

With a focus on the conceptual unification provided by evolutionary and developmental approaches, the journal Biological Theory is devoted to theoretical developments in the disciplines of evolution and cognition.

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the matching genes are called as homozygous

Humans, in general, have the same genes. A number of genes differ. These are in charge of our physical characteristics and health. Each variation is referred to as an allele. For each gene, you inherit two alleles. One is inherited from your biological mother and one from your biological father. If the genotypes are similar, users are homozygous for just that specific gene. having the same allele at the same locus on both members of a homologous pair of chromosomes A homozygous genotype is one that has two identical alleles of a gene for a specific trait. A person can be homozygous dominant (AA) or homozygous recessive (AR).

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The Desert biome is characterized by having cactus plants, dry and hot climate and many reptile animals. Thus, option "D" is correct.

The following are the key elements of the desert biome:

Thus, option "D" is correct.

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Answer:

true

Explanation:

The National Park Service Organic Act has been instrumental in the preservation and management of national parks, it is important to address the limitations in funding, strike a balance between conservation and visitor use, and foster constructive relationships.

The National Park Service Organic Act, enacted in 1916, has had both pros and cons in its impact on the management and preservation of national parks in the United States. One of the significant advantages of the Organic Act is its emphasis on the preservation of natural and cultural resources. By prioritizing conservation, it ensures that these invaluable assets are protected and maintained for future generations to appreciate.

The act also established a centralized management agency, the National Park Service, which has brought consistency in policies and standards across various parks. This unified approach has facilitated efficient and effective management practices. Another positive aspect of the Organic Act is its focus on public access and enjoyment.

This promotes a greater appreciation for the environment and fosters a sense of stewardship. However, the Organic Act does have some drawbacks. Insufficient funding often poses a challenge for the National Park Service, leading to limited resources for park maintenance, visitor services, and conservation efforts. This can impact the quality of visitor experiences and the ability to adequately protect and preserve park resources.

Another potential downside is the delicate balance that the act aims to strike between conservation and visitor use. Managing the increasing demands of visitors while minimizing environmental impacts can be a complex task, resulting in conflicts and challenges for park management. Striking a balance between the needs of local communities and the goals of park preservation can be an ongoing challenge that requires thoughtful engagement and collaboration.

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Answer:

monera kingdom

Explanation:

Answer:

The kingdom is Monera Kingdom

Explanation:

Answer:

Carrying capacity is the maximum number of individuals of one species that a particular environment can support. Limiting factors determine this number

Producers or the organisms belonging to the lower trophic level determine the total number of organisms that can live in a given area along with population density and carrying capacity.

Organisms may be defined as living things made up of one or more cells and able to carry on the activities of life.

Organisms at the bottom of the trophic levels determine the number of other organisms in that area. Apart from this, it also depends on the availability of food, shelter, and space.

This is included under carrying capacity which defines the maximum number of individuals that can be supported by a habitat. Every habitat has a fixed carrying capacity.

Therefore, it is well described above.

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Answer:

A)Ocean floor evidence of sea floor spreading.

Explanation:

evidence pointing to the steps or process  of seafloor spreading and effective plate motion This theory was accepted by many scientist because  it depended  on hard evidence and could describe most of the modern geological structures such as ocean basins,

What is the tectonic theory?

The theory of plate tectonics plates  says  that Earth's surface is made of rigid slabs of rock, or plates, that move to each other.

What is a tectonic plate?

They are huge slabs of rock that cover the earths mantle When a earthquake occurs that's because the tectonic plate is breaking  that makes the ground shake  During the earthquake and afterward, the plates keep on shaking until they are stuck again!

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                                                                                                  -Tobie the dog <3

The plate tectonic theory gave the concept of land and sea formation. "Ocean floor evidence of seafloor spreading" acted as evidence to support the plate theory. Thus, option A is correct.

The plate tectonic theory states about the formation of the lithosphere by the movement of the plate tectonics located deep in the mantle and core layer of the earth. These plates show movement slides over each other to produce lands and drifts to form the oceans.

At a very early there was a supercontinent, Pangaea that slowly shows the formation of the current continent by the movement of the tectonic plates. These solid hard rocks of the earth layers allowed the formation of the various land formations.

The seafloor spreading is the best evidence that supports the tectonic plate theory that described the formation of the oceanic structures including the trenches and basins. The geological structures of the ocean floors supported the theory.

Therefore, option A. evidence of seafloor spreading supported the plate tectonic theory.

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We can explain Mr Mwape that variation in his children through Mendel’s law.

Reason why three children tall and brown one of MR Mwape was short and dark is: -

• Skin color and height is controlled by a lot of genes and every human gets one set of genes from their mother and the other set of genes from their father.

• Now imagine these genes are denoted as ‘T’ for tall and ‘B’ for brown and ‘t’ for short ‘b’ brown. We can assume that MR Mwape and his wife having genotype TtBb.

• During the process of gene segregation and assortment, the majority percentage of children got the heterogenous dominant genotype, which is ‘TtBb’, overlapping the effect of gene ‘t’ and ‘b’. While another child got a homogenous recessive genotype ‘ttbb’ from both the parents, hence the genotype is prominently shown in the fourth child and not in other as gene 't' and 'b' were dominated by genes 'T' and 'B'.

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Based on the information in the chart, light traveling through glass would have a speed slower than that of light in the air (option A), and light traveling through a vacuum would have a speed higher than that of light in the air (option B).

Based on the graph, the denser the medium is the slower the light moves. For example, light is much faster when traveling in the air than when traveling in oil. Due to this, the true statements are:

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Answer:

People who have the B antigen on the surface of their red blood cells have________________ antibodies in their plasma.

Explanation:

Answer:

ant to whale

Explanation:

The change to the plasma membrane would most likely increase membrane fluidity in humans is the decreased lipid raft content (option B).

Plasma membrane is the semipermeable membrane that surrounds the cytoplasm of a cell. Plasma membrane fluidity is a parameter describing the freedom of movement of protein and lipid constituents within the cell membrane.

The factors that affect the fluidity of the plasma membrane are as follows:

An increase in the cholesterol concentration generally decreases membrane fluidity, which is why lipid rafts have a much higher concentration of cholesterol than the surrounding membrane. This means that decreasing cholesterol content would make the membrane more fluid.

The complete question is as follows;

Which of the following changes to the plasma membrane would most likely increase membrane fluidity in humans?

A) Increased saturated fatty acid content

B) Decreased lipid raft content

C) Decreased phosphatidylcholine content

D) Decreased unsaturated fatty acid content

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Explanation:

influenced by aquatic life, the heart & 2 lungs are because scientists believe when the water became over populated with life, some were able to reproduce on land..(Darwin's theory of evolution)...