How is the placenta adapted to perform its function/job(Pregnancy)
Please answer my question
And thanks!

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Answer 1

Answer: What a fascinating question! Just out of college, on my first job, I was called to the delivery room to assist the obstetrician in collecting a blood sample from the not-yet born fetus? scalp. I was nearly immobilized at the sight of the impending birth. Ever since that night, I have gotten goosebumps when witnessing a birth. It is certainly an amazing event, and pondering the entire journey from conception to birth is marvelous! Some of the material I have found is published by religious, political and anti-abotion sites. Neither Google Answers nor I endorse any of these sites. Such web pages were cited here for conception and gestation information, and not because of ideology.

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Water, or H2O, is a covalent substance because there is a covalent bond between -
Which of the following is NOT a function of the cytoskeleton?a. helps the cell maintain its shape b. helps the cell move c. prevents chromosomes from separating d. helps organelles within the cell move
On a global basis, which of the following is the largest reservoir of carbon?

According to Darwin’s theory of natural selection, individuals who survive are the ones best adapted for their environment. Their survival is due to the

Answers

The answer is

Possession of inherited adaptations that maximize fitness.

These individuals have the most desired traits which allow them to adapt better to their environment and make survival easier.

According to Kate, what is the secret of perfect popcorn popping

Answers

Answer: JUST A COUPLE OF OIL DROPS

Explanation:

If we´re assuming that you´re talking about homemade popcorn, the trick is simple: 2- 5 drops of oil (depending on how much corn you want to pop).

Another secret that I´ve acquired wiht several failures, is that you count 15 seconds after the last popping and if you don´t hear another popping, then your popcorn are ready! (I know, it sounds redundant).

Right amount of water is the secret.

Why have astronomers decided that pluto should be reclassified as a dwarf planet? what happens to most meteors when they enter earth's atmosphere?

Answers

There is a new standard of planets that the IAU set in 2006 and Pluto did not pass it. The new qualification is that a planet must be free of debris around it.

Most meteors are small enough to be burned by friction once it enters the Earth's atmosphere. They are also called 'shooting stars'.

In which of the following are the amounts always equal in DNA?a.
adenine and guanine
b.
cytosine and guanine
c.
thymine and cytosine
d.
cytosine and adenine

Answers

The answer to the question is C.

Which of the following is the most common type of hydrolysis damage in the cell?A. deamination of thymidineB. breakage of the glycosidic linkage between the pyrimidines and the DNA backboneC. removal of cytosine from the DNA backbone to create an abasic siteD. deamination of cytosine to uracilE. None of the damage types given is known to occur in cells.

Answers

Answer:

D. deamination of cytosine to uracil

Explanation:

Hydrolytic DNA damage is usually a consequence of metabolic reactions and the most common example of this type of damage is hydrolysis of cytosine into uracil with the release of ammonia. This damage can be fixed by the cell's DNA repair system:removal of uracil by an enzyme uracil-DNA glycosylase and consequently generation of an abasic (AP) site. AP endonucleases recognise AP site and break a phosphodiester bond so that lesion can be replaced with another cytosine.

An atom has an atomic number 17 and atomic mass number 35. How many neutrons are present in its nucleus?A. 17
B. 18
c. 35