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andre [41]
3 years ago
15

Natural selection ___.

Biology
1 answer:
Afina-wow [57]3 years ago
6 0
The answer is A) prepares organisms for future changes in the environment
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At age 85, lyle's immune system does not respond to vaccines as well as it did when he was younger. the atrophy of which endocri
Nadya [2.5K]
<span>The thymus.The thymus plays an important role in the development of T-lymphocytes which is an important type of white blood cell. It reaches maximum development at puberty and then the thymus begins to get atrophied (the shrinking of the thymus with age) and then the thymic stroma is replaced by fat tissue. Loss of thymic function is thought to contribute to weaker immune system of the elderly, increasing instances of diseases such as cancers and other infections.</span>
8 0
3 years ago
Why are fungi not included in Kingdom plantae​
frutty [35]

Answer:

cell walls of the fungi are made of chitin not cellulose

fungi absorbs nutrients from other organisms whereas plant make their own food

8 0
3 years ago
Read 2 more answers
a sample of human cells is suspended in a nutrient solution overnight. The next dasy, the scientist observes that the cells have
TEA [102]

The question is incomplete as it misses the options which are:

Cancer cells do not exhibit density dependent inhibition

Cancer cells do not require growth factors

Cancer cells do not exhibit anchorage dependence

Cancer cells ignore typical cell cycle checkpoints

Answer:

The correct answer will be option- Cancer cells do not exhibit anchorage dependence

Explanation:

A cell becomes tumour forming cell or cancerous cell when the cell undergoes some mutation in the DNA which causes uncontrolled cell division without differentiation.

As a result of the mutation, these cancerous cells show various properties which are present in the normal cells nut absent in cancerous cells like the cancerous cells lack the anchorage dependence.

Anchorage dependence is the property of the cells or the group of cells in which the cells maintain their adherence to the other layer of cells to communicate with each other.

Thus, the cancerous cells lack the anchorage dependence

6 0
3 years ago
who usually gets chemotherapy, is there a specific group that it is more common in (children , the elderly , etc)​
kondor19780726 [428]

Answer:

elderly, specifically 50-74.

Explanation:

According to macmillan.org, the risk for cancer increases with age.

https://www.macmillan.org.uk/information-and-support/...cancer/what-is-cancer.html

If we are to go off of percentages, I would say a higher percent of children (per capita) get chemo, as it is a lot harder to say, "oh well i will die soon anyways" with a child.

7 0
3 years ago
How can the direction that the moon rotates and revolves be described?
Klio2033 [76]
Well everyone moon phase is a phase from where the earth is rotating so it can be determined by the earth rotating
5 0
3 years ago
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