Which theory states that eukaryotic organelles originated as prokaryotes that survived ingestion by a host cell and

ultimately evolved mutualistic relationships with the host cell?
a. endosymbiont theory
b. heterosymbiont theory
c. obligative symbiotic theory
d. facultative symbiotic theory
e. autotrophic symbiotic theory


a

Biology & Microbiology

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Mendel followed the transmission of traits through several generations in

A) frogs. B) peas. C) bacteria. D) the mustard weed.

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During active transport, solutes are moving _______.

a. down their concentration gradient b. toward equilibrium c. against their concentration gradient d. it depends on what is being transported

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Which cells secrete mucus?

A) type II alveolar cells B) ciliated cells C) alveolar macrophages D) type I alveolar cells E) goblet cells

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When a DNA molecule is replicated, the daughter molecules contain one strand of parental DNA and one strand of newly synthesized DNA; this is called ________ replication.

A. conservative B. semiconservative C. hemiconservative D. dispersive

Biology & Microbiology