Explain the endosymbiotic hypothesis

What will be an ideal response?


According to the endosymbiotic hypothesis, chloroplasts and mitochondria in modern cells are derived
from free-living bacteria that were incorporated into other cells as symbiotes. Over time, the
relationship became obligatory and permanent as some of the DNA from the bacteria was transferred
to the host cells' genomes.

Biology & Microbiology

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If there are 100 individuals in a population and 20 are homozygous for B, 60 are heterozygous, and 20 are homozygous for b, what is the allele frequency of B?

A. 20% B. 40% C. 50% D. 80% E. It can't be calculated from this information.

Biology & Microbiology

The directional growth response of plants to touch is called  

A.  phototropism. B.  gravitropism. C.  thigmotropism. D.  photoperiodism. E.  thermotropism.

Biology & Microbiology

DG varies based on concentration ratios

What will be an ideal response?

Biology & Microbiology

The four macromolecules making up our cells allow for the same structure and function across all cells in the body

a. True b. False

Biology & Microbiology