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Luda [366]
3 years ago
9

Which of the following is true about DNA?

Biology
1 answer:
nexus9112 [7]3 years ago
7 0
The correct answer is a. 

Option b is incorrect because DNA is composed of double-stranded molecules. 
Option c is incorrect because both strands of the DNA act as a template during replication (thus making a correct).
Option d is incorrect because replication takes place in the nucleus of eukaryotic cells.
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An individual heterozygous for the A and B alleles has a blood type of AB. What type of inheritancepattern is this?
Inga [223]

The correct option is the first one "Codominance", since both alleles are expressing at the same time.

8 0
2 years ago
Researchers are studying the abnormal activity of kinases in relation to cancer. Theoretically, how might researchers use signal
myrzilka [38]

Answer:

I am pretty sure that the answer is A.

Explanation:

Protein kinases regulate the cell cycle by giving the "go-ahead" or "stop" signal at checkpoints in the cycle. A mutation/disruption in the protein kinases can result in it not doing its job properly. As a result, it can give the 'go-ahead' signal to all cells (mutated or not) to continue through the cell cycle. A distrupted kinase will infleunce the enviornment for a cancer cell as the cancer cell can continue to divide continuously.

I do not think the answer is D because G-couped receptirs are not involed in the regulation of the cell cycle. Additionally, I do not think the answer is C since the production of cAMP (a secondary messgenger amplifies transduction signals; this doesn't have anything to do with cancer?) Finally, between A and B I know that a direct result of cancer is due to a distruption in either protien kinases or  growth factors (not in the answer choices). Since one of the factors that  leads to cancer is present in answer choice A, I think that is the one. However, this is just my reasoning, I am not 100% sure!

3 0
3 years ago
The large pacinian corpuscles in the skin are an example of free/naked nerve endings.
Crank
<span>They are mechanoreceptors that detect pressure, and are found in the skin and also in joints and tendons. Naked nerve endings lie in the centre of the corpuscle surrounded by concentric layers of connective tissue separated by viscous gel.


Looks like an onion.
</span>
6 0
3 years ago
Anyone help please lord please
Scilla [17]

Answer:

Explanation:

Gram positive stains are purple; gram negative are pink; cocci bacteria are spherical; the other is rod. There you go!

3 0
3 years ago
An essential material for photosynthesis is/are:
Lostsunrise [7]

Answer:

B

Explanation:

i did this two months ago and its the only one i remember

6 0
3 years ago
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