In primary endosymbiosis, an ancient eukaryotic cell engulfed a(n) ____, which survived and evolved into a

chloroplast.
a. algae
b. virus
c. ciliate
d. euglenoid
e. cyanobacterium


e

Biology & Microbiology

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True or false: The valence electrons of an atom are at the lowest energy level because their increased distance from the nucleus reduces their attraction to the atom's protons

A. true B. false

Biology & Microbiology

In four o'clock plants, reciprocal crosses are performed with a green plant and a white plant. How will the offspring of the reciprocal crosses look?

A) The offspring of both crosses will be green. B) The offspring will be white if the egg came from the white plant and green if the egg came from the green plant. C) The offspring will be white if the sperm came from the white plant and green if the sperm came from the green plant. D) The offspring of both crosses will be variegated.

Biology & Microbiology

The establishment of which developmental paths an embryonic cell will follow is

a. cell determination. b. cell differentiation. c. cell specialization. d. cell categorization. e. cell speciation.

Biology & Microbiology

buffer

What will be an ideal response?

Biology & Microbiology