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ICE Princess25 [194]
3 years ago
7

Why is a DNA molecule called a double helix?

Biology
2 answers:
krok68 [10]3 years ago
5 0

Answer:

A

Explanation:

Because there are two DNA strands in the DNA molecule and they both rotate around each other in a helix formation. So two helixes = double helix.

kap26 [50]3 years ago
5 0

Answer:

A

Explanation:

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An effective strategy for stepping in if someone appears to need help is <u>directly check in with the person</u><u>.</u>

Explanation:

Many a time, our closed ones will be fighting battles we are unaware of. We are so busy in our lives that we either do not notice the problems of our loved ones or we just think that if they need help from us, they will ask it themselves. But we shall realize the fact that many people will not ask for help themselves due to certain reasons.

So, it is best to always check upon the persons you love if you think that they might need any help.

5 0
3 years ago
Which of the following is the best reason that scientific models are used?
Elodia [21]
<span>The correct answer is b. Option a is incorrect because these models can demonstrate scientific theories, but they don't prove scientific theories (you would need experiments for that). Option c is incorrect because the models aren't always representing something abstract (i.e. DNA is very real, just very small). Option d is incorrect because they don't precisely mimic something in nature, but instead help us visualize something in nature that is difficult to see or comprehend.</span>
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2 years ago
Temperatrure diffrences between the equator abd the two poles produce
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convection currents in the atmospere
8 0
3 years ago
A paleontologist has recovered a bit of tissue from the 400-year-old preserved skin of an extinct dodo bird. The researcher woul
slava [35]

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c)polymerase chain reaction (PCR).

Explanation:

Because the paleontologist recovered only a bit of tissue  and it is very old, it is very likely that the DNA in the sample is very small and part of it is degraded. Anyway, the paleontologist must first amplify the DNA sample to obtain many identical copies of the specific region of the DNA they want to compare. the above is done through a polymerase chain reaction (PCR).

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3 years ago
What might happen if osteocytes were damaged
Marysya12 [62]

Answer:

Explanation:

When osteocytes were experimentally destroyed, the bones showed a significant increase in bone resorption, decreased bone formation, trabecular bone loss, and loss of response to unloading. ... The osteocyte is an important regulator of bone mass and a key endocrine regulator of phosphate metabolism.

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2 years ago
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