Question

The endosymbiotic theory proposes that mitochondria in eukaryotic cells arose from
A. endosymbiotic eukaryotes that metabolized oxygen.

B. endosymbiotic eukaryotes that were photosynthetic.

C. endosymbiotic prokaryotes that metabolized oxygen.

D. endosymbiotic prokaryotes that were photosynthetic

Answer 1

C.

Answer 2

Hello?

Answer 3

thxs can u help me with another one

Answer 4

Fossilized evidence of Earth’s first forms of life would consist of
A. vertebrates from the Precambrian.

B. invertebrates from the Precambrian.

C. eukaryotes from the Precambrian.

D. prokaryotes from the Precambrian

Answer 5

Yes.

Answer 6

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Answer 7

prokaryotes from teh Precambrian.

Answer 8

Any more?

Answer 9

yes

Answer 10

continental plate has moved during the Quaternary period?
A. 6 kilometers

B. 60 kilometers

C. 6000 kilometers

D. 60,000 kilometers

Answer 11

B. 60.

Answer 12

Fossils of the coelocanth, a primitive fish, date back about 140 million years. Modern coelacanths are virtually identical to their fossil ancestors. This species most likely evolves through the process of
A. gradualism.

B. convergent evolution.

C. coevolution.

D. punctuated equilibrium

Answer 13

2Which of the following conditions would likely prevent the assembly and survival of new kinds of organic molecules on Earth today?
A. the presence of carbon dioxide

B. the presence of bacteria and other life forms

C. the supply of atoms that serve as raw material

D. the light and warmth from the sun



3.Which one of these facts about mitochondria and chloroplasts constitutes support for the endosymbiotic theory?
A. Their DNA resembles bacterial RNA.

B. Their ribosomes resemble the ribosomes of bacteria.

C. They are organelles that are found within plant cells.

D. They reproduce by mitosis.

Answer 14

I dont know. What grade are you in?

Answer 15

12. do you know the other two

Answer 16

YOU ARE IN 12th!? I am in 6th! GOODBYE.

Answer 17

ok thank you for ur help