Aerobic respiration became established as a result of the evolution of ____.

A. the first protocells
B. the first true cells
C. metabolism
D. the nuclear envelope
E. the oxygen-producing pathway of photosynthesis


Answer: E

Biology & Microbiology

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Sympatric species are

A. more likely than allopatric species to display character displacement. B. always show character displacement. C. less likely than allopatric species to display character displacement. D. unlikely to be competing. E. more likely than allopatric species to display character displacement, less likely than allopatric species to display character displacement, and unlikely to be competing.

Biology & Microbiology

Discuss how protists can be distinguished from each of the following: viruses, bacteria, fungi, plants, and animals.

What will be an ideal response?

Biology & Microbiology

You cross a pure-breeding white flower with a pure-breeding red flower, and the offspring are all pink. This is an example of what type of inheritance?

What will be an ideal response?

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The corkscrew-shaped bacterium ________ is vectored by ticks into humans and eventually may cause nervous system issues

A) Borrelia burgdorferi B) Yersinia pestis C) Clostridium botulium D) Escherichia coli E) Clostridium tetani

Biology & Microbiology