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4 years ago

How do the cells in a blastocyst change as it becomes an embryo

1 answer:

5 0

1. Passage of a sperm through the corona radiata of the oocyte.
2. Penetration of the zona pellucida.
3.Fusion of the plasma cell membranes of the oocyte and sperm. after fusion the sperm head and tail enters the oocyte but plasma membrane of sperm doesn't.
4. Completion of the second meiotic division of the oocyte. this creates female pronucleus and polar body 2.
5. Formation of the male pronucleus (nucleus of sperm enlarges)
6. Breakdown of the pronuclear membranes and restoration of diploid number of chromosomes.

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An ideal gas is held in a container of volume V at pressure p. The rms speed of a gas molecule under these conditions is v. If n

yawa3891 [41]

Answer:

d) 2v

Explanation:

Since, root mean square speed of a molecule,

$V_{rms}=\sqrt{\frac{3kT}{m}}$

Where,

k = Boltzmann constant,

T = temperature of gas,

m = mass of molecule,

Also, the temperature of a gas,

$T=\frac{pV}{nR}$

Where,

p = pressure of the gas,

V = volume,

n = number of moles of gas,

R = universal gas constant,

$\implies V_{rms}=\sqrt{\frac{3kpV}{mnR}}$

If V = 2V and p = 2P

Then,

$V_{rms}=\sqrt{\frac{12kpV}{mnR}$

$=2\sqrt{\frac{3kpV}{mnR}$

Hence, if rms speed of a gas molecule under initial conditions is v then rms speed of a molecule will be 2v

i.e. option d is correct.

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3 years ago

Paula has studied the effect of ultraviolet light on seed germination.

LuckyWell [14K]

Answer:

i dont know

Explanation:

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3 years ago

For an animal that lives in shallow water, what is the advantage of having eyes on the top of its head

Musya8 [376]

Hey there Lancel3760,

Answer:

The advantage is that, they can see equally well in water and above water. For example, that animal can spot its predator above water and hide fast. And it also helps the animal to see above and under water during the day and night.

Hope this helps :D

<em>~Top</em>

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3 years ago

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Explain the relationship between insulin and glucagon?

zepelin [54]

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4 years ago

Pretty please help ill mark you as brainliest fr

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I can help you with what you need but you haven’t uploaded a picture for me to see the problem it’s blank white

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4 years ago