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aev [14]
3 years ago
9

What do goosebumps tell us about human evolution>

Biology
1 answer:
Katyanochek1 [597]3 years ago
3 0

Answer:

The formation of goose bumps in humans under stress is considered to be a vestigial reflex. Its function in other apes is to raise the body's hair, and would have made human ancestors appear larger to scare off predators or to increase the amount of air trapped in the fur to make it more insulating.

Explanation:

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-Present-day mitochondria and chloroplasts probably evolved as a consequence of early endosymbiosis: the ancestor of the eukaryo
nata0808 [166]

Answer:

The evidence suggests that these chloroplast organelles were also once free-living bacteria.

Explanation:

The endosymbiotic event that generated mitochondria must have happened early in the history of eukaryotes, because all eukaryotes have them.

:)

5 0
3 years ago
Which of the following statements about a prokaryotic cell is NOT true?
Gemiola [76]

The right option is; A. Prokaryotic cells have a nucleus

''Prokaryotic cells have a nucleus'' is the statement about prokaryotic cells that is NOT true.

Prokaryotic cells are cells that lack a true nucleus and some other cell organelles. Prokaryotic cells are found in unicellular organisms called prokaryotes. Examples of prokaryotes are; Bacteria and Archaea. The components of prokaryotic cells include plasma membrane, cell wall, cytoplasm, nucleoid, ribosomes, DNA (deoxyribonucleic acid). Most of the prokaryotic’s DNA (genetic material) is located in a middle area of the cell (nucleoid), and it contains a single large loop known as a circular chromosome.

7 0
3 years ago
Why does an epithelium need to be highly regenerative?
ycow [4]
As epithelial makes the outer covering of all the organs and skin is also made of epithelial...so to be sure that it does not get depleted or destroyed due to friction and other external cause ...it should be highly generative !
8 0
4 years ago
In the new 6-kingdom system of classification, like the old 5-kingdom system, organisms are basically grouped by
DaniilM [7]
<span>The answer to the question stated above is letter A. Cell Structure.

In the new 6-kingdom system of classification, like the old 5-kingdom system, organisms are basically grouped by</span><span> cell structure.

The new 6-kingdom system of classification includes the following:
</span>Animalia<span>, </span>Plantae<span>, </span>Fungi<span>, </span>Protista<span>, </span>Archaea/Archaeabacteria<span>,  and </span>Bacteria/Eubacteria.
6 0
3 years ago
2. Two heterozygous Oompah’s are crossed. What is the probability that the offspring will have orange faces?
Ulleksa [173]
9:3:3:1 is the correct ratio. 
4 0
3 years ago
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