Answer:
The answer is C. The cell took in another ancient prokaryotic cell, which began living inside it.
Explanation:
- The Endosymbiont Theory explains the evolution of membrane bound organelles such as mitochondria and chloroplasts.
- According to the theory, mitochondria evolved when an ameoba like organism engulfed bacteria capable of cellular respiration.
- Similarly, chloroplasts were developed when the ameoba like organism engulfed cyanobacteria or blue-green algae capable of photosynthesis.
- These organisms survived inside the ameoba over millions of years to develop into mitochondria and chloroplasts.
- The fact that mitochondria and chloroplasts have their own circular DNA and ribosomes is evidence of the endosymbiont theory.
The process should be called biomagnification.
Biomagnification occurs because if one animal has some toxic substances in its body like pesticide, a larger animal that that has a higher trophic level than the smaller one will consume the smaller animal, and that the toxic substance is consumed too. However, the larger animal does not only consume one smaller animal, but a lot more. Therefore, if all the smaller animals have the toxic substance, the level of the toxic substance magnifies in the larger animal.
This cycle continues by a even larger animal eats more of the large animal and so the toxic level is even further magnified for the even larger animal. This goes on and on until the toxic level has reached a level that can kill the animal.
Biomagnification is often mixed up with bioaccumulation. Bioaccumulation happens in one organism, instead of the whole food chain. Bioaccumulation is where the toxic substance accumulates in only the organism. Since the substance cannot be excreted away. But bioaccumulation does not involve the higher trophic levels.
Therefore, your answer should be biomagnification.
Answer:
1. A. carbon,hydrogen,nitorgen and oxygen
2.C. Nucleotides
3.A.Brain
4.D. Polysaccharide
5. B.Amino acids contain nitrogen; fatty acids and sugars do not.
I think all the mice had brown fur due to epistasis
Explanation:
The expected results would be 50% black and 50% brown and the ratio could be 2:2. But, if epistasis occurred and the brown fur gene overshadowed the black fur gene, then all the offspring could have brown fur.
