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erik [133]
3 years ago
14

What are realetness prokartyoes may have eukaryotes endosymbois hypothesis?

Biology
1 answer:
kenny6666 [7]3 years ago
8 0

Answer:

The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes. In this theory, the first eukaryotic cell was probably an amoeba-like cell that got nutrients by phagocytosis and contained a nucleus that formed when a piece of the cytoplasmic membrane pinched off around the chromosomes. Some of these amoeba-like organisms ingested prokaryotic cells that then survived within the organism and developed a symbiotic relationship. Mitochondria formed when bacteria capable of aerobic respiration were ingested; chloroplasts formed when photosynthetic bacteria were ingested. They eventually lost their cell wall and much of their DNA because they were not of benefit within the host cell. Mitochondria and chloroplasts cannot grow outside their host cell.

Explanation:

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A friend asks you how exocrine glands differ from endocrine glands. She knows that both form from invaginated epithelium. How do
klio [65]

Answer:

Exocrine glands secrete sweat and oil while endocrine glands secrete hormones.

Explanation:

As she knows the endocrine and exocrine glands in respect of their origin from skin, so our answer must be related to the skin so that she can understand easily. So our answer should be as follows -

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4 0
3 years ago
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Rina8888 [55]

Answer:

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Explanation

from what ive found, calcitonin stops osteoclast activity, makes bones stronger, stimulates the sythesis of vitamin D, but does not (in anywhere i have read) decrease reabsorption in the kidneys. I really hope this helps.,,

if im wrong i am so sorry :(

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KonstantinChe [14]
True

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4 0
3 years ago
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1. D) ball and socket
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