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murzikaleks [220]
3 years ago
10

You have learned that tape or adhesive bandages must be removed carefully from the skin on patients who are elderly to avoid tea

ring their fragile skin. What accounts for the fragility of their skin?
Biology
1 answer:
garik1379 [7]3 years ago
3 0

Answer:

There are fewer collagen and elastic fibers in the reticular layer of the dermis as we age, contributing to wrinkling and increased susceptibility to tearing of the skin.  

Explanation:

As we age, environmental damage, such as ultraviolet radiation, and decreased ability of our fibroblasts to renew collagen and elastic fibers make our skin thinner and more vulnerable to mechanical trauma.

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How has CO2 changed over the last 200 years??
ExtremeBDS [4]

Answer:

It has increased

Explanation:

The concentration of carbon dioxide in the atmosphere has increased in the last 200 years. The extra carbon dioxide is causing an enhanced greenhouse effect greater than would happen naturally.

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Help with 1,2,6,9,10,11,15
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2: carbon can be found in the atmosphere, rocks, soil, & fossil fuels,
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politics because politics is one of the major things

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True or False: Limiting factors can help within an ecosystem by preventing
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A.True……………………………………
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Last week, you looked at both animal & plant cells. Both of these cells were ______. This week, you'll be looking at a diffe
Inga [223]

Answer:

"Last week, you looked at both animal & plant cells. Both of these cells were diploid somatic eukaryotic. This week, you'll be looking at a different, but very important, type of cell: sexual cells. Two gametes, one from a female & one from a male, merge during the process of fecundation/fertilization to form a zygote. All in the organism will develop from this initial diploid cell".

Explanation:  

There are two principal types of cells in the organism: Somatic cells that can not form any gametes, and germ cells that are in charge of gamete production. Both somatic cells and germinal cells will end their cycle dividing and becoming two daughter cells with the same genetic dotation after mitosis.

Somatic cells are any cell in the body excepting from sperm and egg cells. These somatic cells are diploid, they contain two chromosomes sets, each one inherited from each parental. Mutations in somatic cells affect the individual but the progeny does not inherit them. In this sense, these cells do not contribute to anything to inheritance terms through genetics.

Germ cells are the reproductive diploid cells, and the sexual organs (testes and ovaries) are the ones that produce them. These cells might suffer mitosis to form more sexual cells, and then a few of them suffer meiosis giving place to haploid gametes called sperm and egg cells through the gametogenesis process. Each germ cell produces 4 haploid gametes after meiosis.  

Gametes´destiny is to merge in the process of fecundation, during which a new diploid cell called zygote emerges through fertilization. The zygote is a complete cell from the structural point of view that suffer successive mitosis to form the new organism.

 

6 0
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