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k0ka [10]
3 years ago
12

Which statement about photosynthesis is correct? a Plants get the energy they need for photosynthesis from soil. b Plants get th

e energy they need for photosynthesis from sunlight. c Plants get the energy they need for photosynthesis from water. d Plants do not require energy to perform photosynthesis.
Biology
1 answer:
Phoenix [80]3 years ago
5 0

Answer:

B) plants get the energy they need for photosynthesis from sunlight

Explanation:

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When biuret solution is used as an indicator, it turns from blue to purple in the presence of which organic molecule?
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B

Explanation:

The biuret solution will turn from blue to purple when it is exposed to protein. The copper sulfate and potassium hydroxide cause the substance to become an alkaline.

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How are the processes of asexual reproduction and sexual reproduction different? Select three options.
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I need help ASAP!!!!
VladimirAG [237]

Answer:

The answer to your question is: letter C

Explanation:

From the graph, we can conclude that catalase has a low activity at low temperatures. Activity increases a little at 30°C and this process is the highest at 40°C, after this temperature, activity disminishes again.

Options:

A. This option is wrong because the number of bubbles at this temperatures is low, maybe the enzyme is already denatured.

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C. This answer is correct because at this temperature the enzyme produces the higher amount of bubbles.

D. The activity of the enzyme at 0°C was not tested.

8 0
3 years ago
In the Hershey-chase experiment, what happened to the bacteria that had been infected by viruses that had radioactive DNA, and t
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Answer:

The bacteria infected with viruses that had radioactive DNA had become radioactive. The bacteria that had been infected with viruses marked with radioactive proteins were not radioactive.

Explanation:

The rest of the answers:

1.2

2.3

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4.1

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3 0
3 years ago
Dr. stevens is examining the dna sequences of a group of mice. he notices that in one of the mice, one nucleotide pair is substi
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Out of the following given choices;

<span>A.      </span>The mouse has a completely different DNA sequence than the other mice.

<span>B.      </span> The substituted nucleotide has the same directions as the original nucleotide.

<span>C.      </span>Substitutions in the nucleotides of a mouse's DNA never affect their phenotypes.

<span>D.      </span>DNA sequences don't determine the color of a mouse's fur.

The answer is B. Most probably, the nucleotide substitution did not translate to a change in the amino acid sequence in the translated protein. As you may be aware, most amino acids are coded by more than one codon. For example, Leucine is coded for by CTT, CTC, CTA, CTG, TTA, TTG. Therefore, a substitution, that causes a change to either one of the sequences will not change the amino acid.






7 0
3 years ago
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