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ladessa [460]
3 years ago
6

What is the thick, old crust of Earth known as?

Biology
2 answers:
yawa3891 [41]3 years ago
6 0
Lithosphere is the answer
Vikki [24]3 years ago
5 0
The answer is lithosphere.
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How does photosynthesis and cellular respiration contribute to the carbon cycle?
lora16 [44]

Answer:

Cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere.

Explanation:

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4 years ago
A point mutation changes the DNA sequence CGA to CGT, but the same protein is still produced. Which point mutation occurred? A.
iren [92.7K]
The answer is <span>C.silent.

Nonsense, missense, silent, and frameshift mutations are point mutations. The point mutations are the change in a single nucleotide base on the DNA molecule. In a missense mutation, the change in a single nucleotide base results in a codon coding for a different amino acid. In a nonsense mutation, the change in a single nucleotide results in a stop codon or in a nonsense codon. Frameshift mutation, due to addition or deletion of a base, results in the change of reading frame and totally different translation. In all these cases, the change could lead to different of nonfunctional protein translation.
Silent mutation, on the other, means that change in a nucleotide base will no affect amino acid. It will result in a different codon, but the one that code for the same amino acid, so the same protein will be produced.

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7 0
4 years ago
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Bacteria are necassary for human <u>Health</u>
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8 0
3 years ago
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