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astra-53 [7]
3 years ago
13

Secretion of human chorionic gonadotropin (hcg) occurs during what time frame during pregnancy?

Biology
1 answer:
masha68 [24]3 years ago
3 0
Secretion of human chorionic gonadotropin [HCG] only occur during pregnancy in the placenta. The concentration of this hormone increase rapidly during the first three months of pregnancy; the amount in the blood stream doubles every two to three days as the development of the placenta and embryo progress. The hormone reaches its maximum concentration peak around the sixth week of pregnancy and after this, its concentration decline.
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How are the lytic and lysogenic cycles similar and different in terms of process and infection?
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Answer:

<h2>Lytic cycle: involve that there is rupture( lysis) of the host cell and release many copies of virus. </h2><h2>Lysogenic cycle:  involve the insertion of the nucleic acid of a bacteriophage into host genome, known as prophage. </h2>

Explanation:

There are many  similarities and differences between lysogenic and lytic cycles that;

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2. Lytic cycle of bacteriophage:

i) lytic cycle is that it results in many copies of the virus very quickly and the cell is ruptured and many copies of virus are released.

4. Similarity is that in both cycles bacteriophase inter into the host and use their machinery.

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3 years ago
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