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netineya [11]
3 years ago
13

What's portal of entry?

Biology
1 answer:
erik [133]3 years ago
6 0
A portal of entry<span> is the site through which micro-organisms enter the susceptible host and cause disease/infection. Infectious agents enter the body through various </span>portals<span>, including the mucous membranes, the skin, the respiratory and the gastrointestinal tracts.</span>
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What would happen if the concentration of h+ ions were the same on both sides of the membrane when the channel opened?
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92.

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92 chromatids are visible for humans at prophase stage because the replication of 46 chromosomes occur. When the replication of chromosomes occur, each chromosome is converted into two chromatids so when 46 chromosomes replication occur then it changed into 92 chromatids. So we can say that there is 92 chromatids in humans in the prophase stage of mitosis.

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