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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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poizon [28]

Answer:

Acidophilic and acidotolerant eukaryotic microorganisms such as algae, amoebas, ciliates, heliozoan and rotifers, not to mention filamentous fungi and yeasts.

Explanation:

Acidophilic and acidotolerant eukaryotic microorganisms such as algae, amoebas, ciliates, heliozoan and rotifers are the organisms which can survive in highly acidic solution that have large amounts of iron, sulfur dioxide, carbondioxide, and oxygen molecule. In these organisms algae is autotrophic whereas archaea, bacteria, fungi, yeasts and protozoa are heterotrophic.

8 0
3 years ago
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aliina [53]

Answer:

Stem

Explanation:

Main Stem - Holds up the plant and carries water throughout the plant. Secondary Stem - A stem that grows out from the main stem and holds the leaves. Chlorophyll - The green matter that is needed to make food for the plant.

8 0
4 years ago
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consider other shapes for a cell besides a cube? what cell shape might increase . surface area and decrease the volume explain
Vaselesa [24]
Answer - Well to put it in short terms. 

Cells such as water cells or aquatic microorganisms need and required to have a large surface area increased. Because this helps them stay afloat without spending much amount of energy to float.

6 0
3 years ago
Blank blood cells are also produced that are important for the body's blank system
solniwko [45]

Answer:

White

Immune

Explanation:

White blood cells, also called leukocytes, are one of the cells that are involved in the body's immune system. They protect the body against various infections diseases and other invaders. Leukocytes are produced in the bone marrow (hematopoietic stem cells). They are not the only cells that are important for the defense of the body but are important.

8 0
3 years ago
PLEASE HELP ME IM GIVING BRAINLIEST I NEED QUICK ANSWERS BUT CORRECT ONES
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Answer:

1. it's the cell membrane or just the cell itself

2. it's eukaryotic, I can tell because it's dividing

3. eukarya

5 0
2 years ago
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