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LekaFEV [45]
3 years ago
9

Which structure is unique to viruses?

Biology
1 answer:
maw [93]3 years ago
8 0

Answer:

It is the capsid

if you compare a virus to a bacteria, it has RNA just like bacteria but it doesn't have a cell wall or a flagella.

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Why can only sperm fertilize an egg?
Svetlanka [38]

Answer:

<em>Sperm is the only thing that can combine with a egg to create a living breathing organism </em>

Explanation:

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Growth factors and cytokines both lead to tyrosine phosphorylation through receptors, but they do so through different mechanism
gladu [14]

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The growth factor receptors have a kinase domain while the Cytokines receptors do not contain a kinase domain as part of their structure.

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The two are signaling molecules that control cell activities in some manners, such paracrine, endocrine and autocrine manners.

The receptor kinase domain can be specific for substrate sites in which phosphorylation occurs.

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Which structure allows the spinal nerves to exit from the spinal cord?
n200080 [17]

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Intervertebral foramen

Explanation:

These structures are found in between pairs of vertebrae  and not only do spinal nerves pass through them, the spinal artery, veins, and transforaminal ligaments do too. While the spinal cord passes through the vertebral foramen, the spinal nerves exit and enter the spine through these intervertebral foramen to 'serve' the rest of the body.

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How does the plant absorb carbon dioxide for photosynthesis
irina1246 [14]

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a. Through the leaves

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the plant absorb carbon dioxide through their leaves.

4 0
3 years ago
One way humans change ecosystems is by building dams. What are some of the pros and cons of damming a river?
ValentinkaMS [17]
Pros is that it helps water stay in one place and it also makes water more easily accessed for future use. The cons is animals can have less space to live and the overflow of water can occur which means flooding.
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