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mafiozo [28]
3 years ago
10

Why do we have only 1 moon ?

Biology
1 answer:
frosja888 [35]3 years ago
4 0
This in fact is probably the origins of the two moons around Mars: they were two small protoplanets that the gravity of Mars pulled in its orbit. As for our Moon, the story is believed to be different. It is assumed that the Moon formed from the collision of a large planetesimal with the Earth. ❤️
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Answer:

The DNA is more closer to bacteria.

Explanation:

Mitochondria and chloroplast are considered as semi-autonomous organelle because they contain their own genetic material. The mitochondria and chloroplast evolution can be explained by the endosymbiont theory.

The DNA of mitochondria and chloroplast are more closely related to bacterial chromosome rather than eukaryotic chromosome.  Both the organelle and bacterial DNA are double stranded and  their translation can be inhibited by the chloramphenicol. Some of their replicating enzymes also show similar characteristics.

Thus, the DNA is more closer to bacteria.

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3 years ago
An enzyme is considered a(n) because it speeds up a chemical reaction without being used up. 2. in a catalyzed reaction, a react
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3 years ago
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Answer:

Mutations can create entirely new alleles in a population which changes the allele frequencies of a gene pool.

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3 years ago
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WINSTONCH [101]
2 that us the answer to your question
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Tissue culture experiments with PDGF demonstrate that without this substance _____.
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Answer:

Answer is 2. Fibroblasts fail to divide.

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Fibroblasts are cells which are found in the collective tissues, and they produce collagen. The collagen produced by the Fibroblasts play important role in tissue repair. Fibroblasts are regarded as the main cells in the connective tissue.

Note that, PDGF, which is Platelet -derived growth factor in full, is a growth factor regulating cell growth and it's division.

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