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tino4ka555 [31]
3 years ago
10

What causes the collapse of a nebula?

Biology
1 answer:
Otrada [13]3 years ago
8 0

Answer:

Irregularities in the density of the gas causes a net gravitational force that pulls the gas molecules closer together. Some astronomers think that a gravitational or magnetic disturbance causes the nebula to collapse. As the gases collect, they lose potential energy, which results in an increase in temperature.

Explanation:

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The epithelial cells in the skin of an animal have 24 chromosomes. How many chromosomes are present in the gametes of this anima
mrs_skeptik [129]

Answer:

There will be 12 chromosomes

Explanation:

We have given that The epithelial cells in the skin of an animal have 24 chromosomes

We have to find the number of chromosomes present in the gametes of this animal

We know that number of chromosomes present in the gametes is given by

\frac{number\ of\ chromosmes\ present\ in\ skin}{2}

So number of chromosomes in gametes =\frac{24}{2}=12chromosomes

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Can someone atleast tell me which line is which so I can color code please
Olegator [25]

Answer:

See attached image

Explanation:

Action potential can be split into 5 phases (0-4), where phase 4 leads from one action potential to the next. Phase 0 is the line up and is known as depolarization, it is here where the action potential is triggered and fast Na channels will open. Next, is phase 1 called early repolarization which is the little bit at the beginning of the plateau-here the Na channels will close. Then you have the plateau phase where Ca channels are open at the beginning and close at the end. Then is phase 3 called repolarization which is the big slope down and here is where the normal transmembrane ionic concentration gradients are restored. Finally, phase 4 which is the resting phase occurs. There are many resources online if you need more details, here is a pretty good one: http://www.pathophys.org/physiology-of-cardiac-conduction-and-contractility/

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