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OlgaM077 [116]
2 years ago
7

Which organelle is not found in an animal cell?

Biology
1 answer:
Sergeeva-Olga [200]2 years ago
3 0

Answer:

Cell wall, Vacule, Plastids

Explanation:

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I’m pretty sure males are ZZ. Let me know if I’m right and have a good rest of your day!

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Arrange the order of events for the internalization of LDL particles into cells:
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The correct answer is "5-1-3-2-4".

Explanation:

Internalization of LDL particles into cells, is needed to form the intracellular vesicles known as endosomes. The order of events that allow for this process are:

5) LDL receptors migrate to the cell surface and cluster in clathrin-coated pits. Clathrin acts directing the receptors to the cell membrane region where endosomes are formed.

1) A combination of cholesterol and apolipoprotein binds to LDL receptors and becomes internalized as endocytotic vesicles. Once the receptors are in the proper cell membrane region, cholesterol and apolipoprotein are bound and internalized.

3) Several endocytotic vesicles fuse to form an endosome.

2) The environment of the endosome becomes acidic, which causes the LDL to dissociate from its receptor; additionally, the endosome fuses with a lysosome. LDL should be dissociated from its receptor since it is going to be degraded in the following step.

4) The LDL particle is degraded by the lysosome. This takes place after endocytosis, when LDL particles are transported into lysosomes once they are fused, cleaving the cholesterol esters into cholesterol and fatty acids.

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3 years ago
How have antibiotics changed the quality of life of for humans over the past Century​
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Antibiotics have helped in a speedy recovery for human illnesses over the past century.

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Because anti biotics were not present centuries ago, many would get sick and even die. However, antibiotics work by affecting things that bacterial cells have but human cells don't. This helps to fight off the bacterial cells and fight infections and viruses, leading to a speedy recovery.

4 0
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The correct answer would be C) It increases survival for cuckoos, but decreases survival of the other birds.

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It has also been found that cuckoo chicks beg to be fed more intensely due to which host chick die due to starvation.  

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B

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Because now it’s a larger group

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