The evolution of aerobic respiration ____ both oxygen and carbon dioxide levels in the biosphere

a. mutated
b. stabilized
c. increased
d. decreased
e. eliminated


b

Biology & Microbiology

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Roses are red because of which pigment?

a. anthocyanin b. chlorophyll b c. beta-carotene d. phycoerythrobilin e. chlorophyll a

Biology & Microbiology

The Michaelis constant (Km) of an enzyme is the substrate concentration that produces maximum velocity.

Answer the following statement true (T) or false (F)

Biology & Microbiology

If white eyes are produced by a recessive allele, what is the likely genotype of a white-eyed individual?

A. Rr B. RB C. rr D. RR

Biology & Microbiology

A relationship that has been established based on a large amount of observational and experimental data is a(n)

A) fact. B) assumption. C) conjecture. D) theory.

Biology & Microbiology