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liubo4ka [24]
3 years ago
10

How can injury to tissue prompt cells in the surrounding area to undergo cell division?

Biology
1 answer:
Alona [7]3 years ago
3 0

Cell division is the process essential for growth and repair in multi-cellular organisms.

Injury to the tissue can activate surrounding cells to undergo cell division with the help of mitogens. Mitogens are the chemical substances which help in escalating mitotic divisions in the cells.

They act by activating the signal-transduction pathway which involve mitogen-activated protein kinase (MAPK).

Other possible manner could be the loss of density which could lead to the inactivation of contact inhibition. As there is a loss of cells during the injury, it makes an empty space which could also trigger or activate surrounding cell to start cell division.

In addition, at injury site the flow of blood also increases to transport various nutrients, clotting factors, growth factors etc. These increased nutrition and growth factors also speed up the process of mitosis.

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Answer:

Hydroxyl

Explanation:

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A hydroxy or hydroxyl group is a functional group with the chemical formula -OH and composed of one oxygen atom covalently bonded to one hydrogen atom.

Using these given definitions, a hydrogen bond is labeled with one linkage, while a covalent bond is with two links to the Carbon Atom.

See attached image for a similar diagram for proof.

8 0
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Answer the questions plz
exis [7]

Answer:

1) A double Helix with complementary bases in the middle. The backbone is made of sugar and phosphates. The middle is bases

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4) To bring amino acids to the ribosomes to help build a protein

5) A chain of amino acids held together by peptide bonds

6) Ribosomes

7) Because those are the bases that are complementary in DNA so they must be equal

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5 0
3 years ago
Homologous chromosomes line up in the center of the cell
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Answer:

Metaphase I

Explanation:

Homologous chromosomes are paired to facilitate crossing over during prophase I of the meiosis I. This is followed by alignment of homologous chromosomes at the equator of the cell during metaphase I. The process is assisted by microtubules of spindle apparatus. The kinetochore microtubules of the spindle apparatus attach themselves to the kinetochores of chromosomes.

The two sister kinetochores of duplicated homologous chromosomes are attached to the opposite pole to align the homologous pair at the center of the cells. Metaphase I is followed by anaphase I during which homologous chromosomes move towards the opposite poles.

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D. Dynamic equilibrium

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Answer:

B

Explanation:

4 0
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