Which of the following evolutionary innovations played key roles in allowing life on land?

a. conjugation
b. amniotic egg
c. exoskeleton
d. B and C
e. all of the above


Answer: d. B and C

Biology & Microbiology

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Plants store most of their energy for later use as:

a. unsaturated fats b. saturated fats c. starch d. sucrose e. cellulose

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Which of the following is so small, it is visible only with an electron microscope?

A) Mitochondrion B) Prokaryotic cell C) Eukaryotic cell D) DNA

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Infection with ________ may result in peptic ulcers and stomach cancer

A) Campylobacter jejuni B) Helicobacter pylori C) Borrelia recurrentis D) Vibrio parahaemolyticus E) Rickettsia rickettsii

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