Members of the genus Actinomyces are either facultative or strict anaerobes that require ________ for optimal growth.

Fill in the blank(s) with the appropriate word(s).


carbon dioxide, CO2

Biology & Microbiology

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Logistic population growth describes growth without limitation

Indicate whether the statement is true or false.

Biology & Microbiology

Animals that have no circulatory systems tend to be

a. small. b. cylindrical. c. flattened. d. composed of filaments made of cells. e. any of these.

Biology & Microbiology

Before a sperm can participate in fertilization, it must undergo ____ in the female reproductive tract

a. the acrosome reaction b. the cortical reaction c. spermatogenesis d. determination e. capacitation

Biology & Microbiology

Solid worms that lack a body cavity are known as

A. coelomates. B. pseudocoelomates. C. triploblastic. D. acoelomates. E. diploblastic.

Biology & Microbiology