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Nuetrik [128]
3 years ago
15

Why does aging happen? (Biology answer)

Biology
2 answers:
jeyben [28]3 years ago
7 0
“No one knows how and why people change as they get older. Some theories claim that aging is caused by injuries from ultraviolet light over time, wear and tear on the body, or byproducts of metabolism. Other theories view aging as a predetermined process controlled by genes.”
Zigmanuir [339]3 years ago
5 0

Answer: No one knows exactly why aging happens but here are a few theories are injuries from ultraviolet light over time, wear and tear on the body, or byproducts of metabolism.

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Describe the living and nonliving things that define the area or region in which you live. In your area, are there any organisms
Bumek [7]

Answer:

I interact with my parents and siblings, who are living organisms. However, something that is non-living is the computer that I am typing this answer on.

6 0
3 years ago
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In what phase does new nuclear membrane form around<br> the chromosomes.
horrorfan [7]

Answer:

una membrana nuclear se vuelve a formar alrededor de cada grupo de cromosomas y un nucléolo reaparece en cada nuevo núcleo. Los cromosomas también comienzan a descondensarse. ... Se forman dos nuevos núcleos, uno para cada conjunto de cromosomas.

Explanation:

8 0
4 years ago
Explain how the independent alignment of homologs, and also crossing-over during the first meiotic division, each contribute to
BartSMP [9]

Answer: Homologous chromosomes are randomly distributed to daughter cells, this means different chromosomes segregate independently of each other. And they exchange segments of DNA during crossing over. This recombination creates genetic diversity because genes from each parent are exchanged.

Explanation:

Meiosis is a type of cell division that produces gamete cells, which are sex cells (egg and sperm)

Chromosomes that form a pair and are found together are called homologous chromosomes, and they are inherited from each parent. During prophase of meiosis I, the homologous chromosomes exchange segments of DNA in a process called crossing over. This recombination creates genetic diversity because genes from each parent are exchanged. <u>It results in new combinations of genes on each chromosome.</u>

After that, during the anaphase of meiosis I, the two chromosomes line up on the equatorial plane of the cell. Then, they are separated and each will go to a new daughter cell. So homologous chromosomes are randomly distributed to daughter cells, <u>this means different chromosomes segregate independently of each other.</u>

3 0
3 years ago
List three machines or devices that depend on gravity to work.
meriva
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GravityLight is a device that was recently developed by engineers that is designed to produce light through the force of gravity. 
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Oxygen has an atomic number of 8. The n = 1 energy level has two electrons, and the n = 2 energy level has six electrons. Oxygen
Alex73 [517]
-2,-1 2-2=4 . hope this helps
6 0
3 years ago
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