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tresset_1 [31]
3 years ago
13

what hormonal change occurs after fertilization that causes the endometrial lining to remain intact so that the fertilized egg c

an successively implant in it?
Biology
1 answer:
tino4ka555 [31]3 years ago
5 0

The answer is the pituitary gland secretes follicle stimulating hormone, which acts on the follicles and stimulates them to produce progesterone.

The endometrial lining is where the fertilized egg implants, or burrows and attaches itself to the uterine wall, where it will continue to grow and be nourished. There are three layers of the uterus: The perimetrium is the outer layer, the myometrium is in the middle, and the endometrium is the inner layer of the uterine wall.

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Charles Darwin took a five-year voyage around the world observing different
Juli2301 [7.4K]

Answer:

Natural selection.

Explanation:

Natural selection is when organisms who are most adapted to their environment survive and pass on their genes while those with "unfit" genes die and don't get the chance to reproduce! This slowly creates a population that is most well suited to their habitat. Hope this helps again LOL! :)

7 0
2 years ago
What is meant by the term “essential” amino acids, what is essential about them? Put in your own words
sergey [27]
Amino acids make up proteins, and proteins are needed for proper growth in humans. They’re essential because, without them we wouldn’t have the nutrients we need to survive. I hope this helped!
5 0
2 years ago
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Which of the following is NOT a density independent factor?
liraira [26]

Answer:

predation

Explanation:

i

4 0
3 years ago
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A zebra mussel is discovered in a lake in Pennsylvania for the first time. Why would this make an ecologist worried?
Anna71 [15]

If a zebra mussel is discovered in a lake in Pennsylvania, then the ecologist would be worried because it is an invasive species. The zebra mussel is native to Ukraine and Russia, but if it has been found in Pennsylvania, than it means that it has been introduced in this area. As an invasive species, the zebra mussel can be very dangerous for the native species in the lake. The invasive species usually are more competitive for food sources than the native species, manage to reproduce quicker, bring in diseases, and the native species tend to not have defense mechanisms for them. This leads to rapid decline or even extinction in the native species, while the invasive spreads out quickly and takes over, resulting in dramatic change in the whole ecosystem.

3 0
3 years ago
Nicotinamide adenine dinucleotide phosphate (NADP ) is a biological oxidant involved in the oxidation of testosterone to estradi
ankoles [38]

Answer:

False.

Explanation:

NADP does not  convert  testosterone to estradiol. This oxidation  is done by a steroid   17-a-hydroxysteroid dehydrogenase.

This oxidation  is essential for stability of hormone: it helps to regulates the elevation of Testosterone in women,subduing the manifestation of male sexual characteristics,

and

for preventing autoimmune diseases.

<u>The oxidation involved two basic  steps of  reaction, controlled by two different enzymes.</u>

<u>NADP is a Co- factor,  when in reduced form( NADPH) is used in Calvin cycle, of light independent reaction of photosynthesis, and in Nucleic acid and triglycerides synthesis</u>.

It has nothing to do with conversation of Androgen( testosterone  to Estradiol.

8 0
2 years ago
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