BIOLOGY HIGH SCHOOL

When magma reaches the Earths surface its called? A. Lava
B. fissures
C. deccan traps
D. basalt

Answers

Answer 1
Answer: Its called lava
its because it has just erupted from the volcanoe
Answer 2
Answer:

ITs Lava Becasue it is and yea it is called lava and magma is called magma because Scientists didnt know what other name can they call it. Hope That Dosen't Help ;)

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Which cells of the immune system are similar because they engulf foreign cells through phagocytosis?
Ill give you a Brainliest if it is rightThe diagram below shows a portion of the concept map for the Rock Cycle.Which of these would best fit in the empty oval? A) magmaB) sedimentsC) sedimentary rocksD) metamorphic rocks
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A farmer sprays insecticide on his crops to kill unwanted insects. Most of the insects die, and the chemicals have the effect of damaging the DNA of the insects that are not killed. Which of these has happened?A. Sexual selection among the insects has changed the gene pool.B. Genetic equilibrium has been maintained.C. Mutations have arisen that may have altered allele frequencies.D. Individuals with new genes have immigrated into the population.

Removal of phloem tissue leads to gradual death of the plant. Why does this happen?Distribution of carbohydrates from the leaves to the other parts of the plant is affected.


Distribution of water and nutrients from the roots to the other parts of the plants is affected.


Distribution of water and nutrients to the flowers affects seed formation

Answers

Distribution of carbohydrates from the leaves to the other parts of the plant is affected.

The main function of the Xylem is to transport water and minerals throughout all parts of the plant. Phloem on the other hand is responsible for transporting organic molecules that are larger in size. The vascular system, consisting on the Xylem and the Phloem runs from the roots of the plats through the branches and upto the leaves. It controls the total transportation of the water and nutrients.

Which type of traits vary quantitatively due to the interaction of multiple genes?

Answers

The answer is polygenic traits.

Polygenic traits are determined by an interaction of multiple genes. As the name suggests, poly (Greek) means many, thus, polygenic means many genes. Many genes interact and together influence some phenotypic trait. Quantitative phenotypes are usually attributed to the polygenic effects.

Answer:

Explanation:

Polygenic

The oxygen produced by the chloroplast passes out of the cell by

Answers

Hi There! :)

The oxygen produced by the chloroplast passes out of the cell by

Photosynthesis

In cells, hydrogen peroxide is converted to water and oxygen through the activity of

Answers

The right answer is enzymes (catalase).

Catalase is an enzyme that allows the dismutation of hydrogen peroxide (hydrogen peroxide) in water and oxygen.

The oxygen-oxygen bond of the hydrogen peroxide is cut off by the iron atom of the heme group, creating a molecule of water and a highly oxidizing iron-oxygen bond. This can oxidize a new molecule of hydrogen peroxide, giving oxygen. The enzymatic reaction at play is one of the fastest known.

Within the cell, catalase helps protect the body from the oxidative and harmful action of hydrogen peroxide.
In cells, hydrogen peroxide is converted to water and oxygen through the activity of enzymes.

If u have no white blood cells left, what does this mean?

Answers

White blood cells fight infections from bacteria, viruses, fungi. and other pathogens (organisms that cause infection). One important type of white blood cell is the neutrophil. These cells are made in bone marrow and travel in the blood throughout the body. They sense infections, gather at sites of infection, and destroy the pathogens.

When the body has too few neutrophils, the condition is called neutropenia. This makes it harder for the body to fight off pathogens. As a result the person is more likely to get sick from infections. In general, an adult who has fewer than 1,000 neutrophils in a microliter of blood has neutropenia.

If the neutrophil count is very low, (fewer than 500 neutrophils in a microliter of blood), it is called severe neutropenia. When the neutrophil count gets this low, even the bacteria normally living in a person's mouth, skin, and gut can cause serious infections.
White blood cells fight bacteria so, with no white blood cells you have a higher risk of infection and a low white blood call count can give you Leukopenia  and Neutropenia

Which one of the following statements MOST accurately describes methylation? Methyl groups are most often added to cytosines adjacent to guanine bases in or near the promoter sequence, increasing the probability of gene expression. Methyl groups are most often added to adenine-thymine base pairs because they are held by only two hydrogen bonds, and this increases the probability of gene expression. Methyl groups are most often added to cytosines adjacent to guanine bases in or near the promoter sequence, decreasing the probability of gene expression. Methyl groups are most often added to guanine-cytosine base pairs because they are held by three hydrogen bonds, and this decreases the probability of gene expression. Methyl groups are added to most bases in the promoter region of a specific gene so that RNA polymerase and its associated proteins will bind more efficiently.

Answers

DNA methylation regulates gene expression by either luring proteins implicated in gene repression or by obstructing the DNA-binding activity of transcription factor(s). Thus, option C is correct.

What is the main role of methylation in gene expression?

A dynamic process involving both de novo DNA methylation and demethylation causes the pattern of DNA methylation in the genome to alter during development.

Every single cell in the human body undergoes billions of times of methylation, an essential biochemical process. It performs a wide range of biological processes, including detoxification. Expression of DNA.

Therefore, Methyl groups are most often added to guanine-cytosine base pairs because they are held by three hydrogen bonds, and this decreases the probability of gene expression

Learn more about methylation here:

brainly.com/question/28621729

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The most true answer from these choices is:

Methyl groups most often added to guanine-cytosine base pairs because they are held by three hydrogen bonds, and this decreases the probability of gene expression.
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