Chloroplasts ____
a. resemble photosynthetic bacteria
b. utilize the same pigments regardless of what organism they are in
c. apparently evolved from mitochondria
d. utilize DNA derived from the nucleus
e. are found in prokaryotes
ANSWER: a
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In humans, the gonads ____
a. produce gametes only b. secrete hormones only c. nourish the embryo only d. produce gametes and secrete hormones only e. produce gametes, secrete hormones, and nourish the embryo
Biofilms found in nature ____
a. contain only bacteria b. are composed of multicellular organisms c. are most often found on liquid surfaces d. are communities of unicellular organisms e. contain only closely related organisms
Which one of the following wraps around, supports, and holds organs in proper position within the body?
A) loose areolar tissue B) tendons C) ligaments D) cytoskeleton E) reticular tissue
The contractile vacuole of the paramecium is possibly an evolutionary of the kidney
a. true b. false