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Andrej [43]
3 years ago
15

What observation led researchers to purpose that chloroplasts evolved from Cyanobacteria

Biology
2 answers:
ArbitrLikvidat [17]3 years ago
8 0
Considering your talking about the a-d options Here is my answer
<span>A) Both produce proteins.
B) Both contain mitochondria.
C) Both provide structure to cells.
D) Both perform photosynthesis.

Answer is D</span>
devlian [24]3 years ago
8 0
Researchers were led <span>to propose that chloroplasts evolved from cyanobacteria because they observed that both of them perform photosynthesis. </span>
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What is the approximate percentage of guanine in the DNA genome of E. coli?
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Answer:

25%

Explanation:

<em>The approximate proportion of G + C content in the genome of E. coli has been reported to be 50%. According to Chargaff's rule, the amount of guanine in any DNA must be approximately equal to the amount of cytosine. </em>Hence,

if G + C = 50 and G = C,

then

G = C = 25

Therefore, the approximate percentage of guanine in the genome of <em>E. coli </em>would be 25.

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