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Sever21 [200]
3 years ago
7

Which best describes the cell theory?

Biology
1 answer:
spin [16.1K]3 years ago
8 0

2, because a theory is not a law that can not be changed, and new evidence can change a theory.

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How does the binding exert a positive effect? How does the binding exert a positive effect? The CAP-cAMP complex triggers the fo
Lana71 [14]

Answer: correct: The CAP-cAMP complex unbends the DNA loop, thereby allowing binding of RNA polymerase

Explanation:

The CAP-cAMP complex unfolds the DNA loop, allowing the binding of RNA polymerase. The catabolite activating protein, when bound with cAMP, is known to stimulate the transcription of the operon lactose genes, being necessary for the reaction RNA polymerase

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3 years ago
Which two systems does the nose play a role in?
pav-90 [236]
Respiratory and immune
5 0
3 years ago
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Can an experiment be valid and not reliable? Explain
nikklg [1K]

Answer:

an experiment can be valid if its not reliable like something useless or something that worked when it was tested but failed later

Explanation:copy and paste that :)

6 0
4 years ago
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The sides of the DNA ladder are made up of a phosphate and:
lesya [120]

Answer:

A sugar called deoxyribose.

Explanation:

DNA is made up of molecules called "nucleotides". These are:

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Thus the first option is the right answer.


Reasons why the other options are wrong:

"A plasma called haemoglobin" is wrong as plasma and haemoglobin are related to the blood.

"A chemical called nucleic acid" is wrong as it is not what DNA's made up of. DNA and RNA are nucleic acids themselves.

"An acid called chlorophyll" is wrong as chlorophyll is related to plants.

7 0
2 years ago
Carbon exists in many forms on Earth. What is happening in Step 1?
Zolol [24]

Answer:

You're right, the last option is correct

Explanation:

smart :D

8 0
3 years ago
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