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Debora [2.8K]
2 years ago
11

Skin and nerve cells have different appearances and characteristics from each other, although they contain the same DNA. Why?

Biology
1 answer:
sergij07 [2.7K]2 years ago
5 0

Answer:

I think the correct answer from the choices listed above is option A.

Explanation:

Skin and nerve cells have different appearances and characteristics from each other, although they contain the same DNA because the genes expressed in inskin cells may not be expressed in nerve cells and vise versa.

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Animal cells do not go through which of the following processes?
maxonik [38]
Photosynthesis because only plants can because plant cell chloroplast which provide photosynthesis which what they feed on and the food the make is glugose
3 0
3 years ago
PLEASE HELP PLEASE PLEASE PLEASE PLEASE HELP PLEASE PLEASE PLEASE PLEASE HELP PLEASE PLEASE PLEASE
igor_vitrenko [27]

Answer:

B

Explanation:

So lets go over facts of mieosis and mitosis:

Meiosis is sexual reproduction

Mitosis is asexual reproduction

Meiosis in animals is how they reproduce

Mitosis in animals is how they regenrate their cells

Mitosis copies the orgninal cell.

Meiosis mixes a male and female egg and sperm to form a zygote

Ok, knowing this. We can find our answer.

Since we know meiosis is sexual, and mitosis asexual, we can get rid of C.

We also know that meiosis is in animals, and so is mitosis, so we can get rid of A.

Finally we can get rid of D, since we know due to the male and female genetics(and through the swapping of chromesomes during prophase)that genetic variation occurs in meiosis, but since mitosis copies a single cell, it is not genetically varient.

<u>So the answer must be C, which states that Mitosis has genetically identical cells, while mieosis does not. </u>

Hope this helps! ;)

 

3 0
2 years ago
increasing intracellular cAMP leads to smooth muscle relaxation by: Group of answer choices inhibiting IP3 channels, leading to
kirza4 [7]

Answer:

1. Inhibiting IP3 channels, leading to decreased Ca2 in the sarcoplasm and reduced contraction.  

2. Increasing the relative activity of MLCP, leading to a decrease in tension.

3. Activating K channels, increasing K leaking out of the cell which hyperpolarizes it and decreases the likelihood of Ca2 entry.

Explanation

In smooth muscle, cyclic AMP (cAMP) mediates relaxation because cAMP inhibits a specific kinase required for myosin light chain protein (MLCP) phosphorylation, thereby triggering contraction in the smooth muscles. It has been shown that cAMP inhibits 1,4,5-trisphosphate (IP3)-dependent calcium ions (Ca 2+) release by activation of the cGMP-dependent protein kinase (PKG). PKG proteins act to modulate Ca2+ oscillations by stimulating sarcoplasmic Ca2+-ATPase membrane proteins, increasing Ca2+ in the sarcoplasmic reticulum stores and Ca2+ efflux from the cells, and activate voltage-gated potassium (K) channels, thereby leading to membrane hyperpolarization and reducing Ca2+ entry through Ca2+ channels.

6 0
2 years ago
A windmill stores power in a generator, the generator transfers electricity to the TV in your home. ______-----&gt;______-----&g
sertanlavr [38]

Answer:

electrical energy

The generator, in turn, converts the mechanical (kinetic) energy of the rotor to electrical energy.

5 0
2 years ago
Read 2 more answers
Cellular respiration is balanced by photosynthesis; the two processes work
Finger [1]

Answer:

A is the answer

Explanation:

Carbon dioxide and water are the reactants of both processes

4 0
3 years ago
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