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castortr0y [4]
2 years ago
15

Someone help with this pls thank you .

Biology
1 answer:
maxonik [38]2 years ago
6 0

Answer:

3a) The number of neutrons

b) protons and neutrons

Explanation:

Isotopes of the same element have the same number of protons but different number of neutrons

alpha particles consist of two protons and two neutrons

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Explanation:

The first piece of evidence that needed to be found to support the endosymbiotic hypothesis was whether or not mitochondria and chloroplasts have their own DNA and if this DNA is similar to bacterial DNA. This was later proven to be true for DNA, RNA, ribosomes, chlorophyll (for chloroplasts), and protein synthesis.

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Answer:

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hope this helps

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