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3 years ago

Does mitosis ever stop in cells? explain your answer

1 answer:

3 0

Mitosis occurs after interphase (which is the phase that takes the longest) and is occurring all the time in your cells. Sometimes a cell will not go into a state of mitosis if an error is found during the interphase process (if it does, it's cancerous) . Some cells don't go through the process of mitosis, like neurons. But once a cell passes interphase without any errors, it will go into mitosis then cytokinesis. The process takes about one day and occurs when your body is repairing itself or if you're growing and developing. So yes, it happens all the time, just not in every single cell; just in most cells.

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Which describes the most direct function of the nostrils?

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Answer: they allow air to enter lungs and also permits air into the body

Explanation:

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The somatic nervous system is responsible for controlling ______; the autonomic nervous system is responsible for controlling __

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<h2><u>Answer:</u></h2>

<em>C. skeletal muscle; cardiac muscle, smooth muscle, and organs</em>

<h3><u>Explanation:</u></h3>

The somatic nervous system has voluntary control of body movements via skeletal muscles, whereas the autonomic nervous system is responsible for controlling involuntary body functions, such as heartbeat, blood flow, breathing, and digestion.

Skeletal muscle system (SNS) regulating voluntary skeletal muscle contraction and autonomous nervous system ( ANS) regulating involuntary control of smooth, cardiac muscles and glands.

<em>Hope this helps.</em>

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3 years ago

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Two humans mate who are heterozygous for earlobe shape where attached earlobes (A) are dominant to free earlobes (a), and earwax

MariettaO [177]

Answer:

3/16

Explanation:

This question involves two different genes coding for earlobe shape and earwax quality. The alleles for attached earlobes (A) and wet earwax (E) are dominant over the alleles for free earlobes (a) and dry earwax (e).

According to this question, two humans mate who are heterozygous for both genes i.e. AaEe × AeEe. Each parent will produce the following gametes: AE, Ae, aE, ae.

Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:

* Attached earlobe, wet earwax (A_E_) = 9/16

* Attached earlobe, dry earwax (A_ee) = 3/16

* Free earlobe, wet earwax (aaE_) = 3/16

* Free earlobe, dry earwax (aaee) = 1/16

Hence, the probability of these parents having their first child with dry earwax (ee) and attached earlobes (A_) i.e. genotype A_ee is 3/16.

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Answer:

Ozone (O3)

Nitrogen Oxides (NOx)

Carbon Monoxide (CO)

Sulfur Dioxide (SO2)

Particulate Matter (PM10 and PM2.5)

Explanation:

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The phases of the moon depend on how much of the lighted side of the moon can be seen from Earth

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TRUE because the earth and moon are always rotating, therefore we see different parts based on where we are at.

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