Which of the following microorganisms have been referred to as energy parasites?

A. rickettsias
B. vibrios
C. chlamydias
D. spirochetes
E. Borrelia


Answer: C

Biology & Microbiology

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Examine Figure 23.2 in your textbook. The group "fish" includes all vertebrates except the tetrapods. The taxon "fish" is therefore a _____ group

A. monophyletic B. paraphyletic C. polyphyletic

Biology & Microbiology

Brown algae lack true roots but have similar structures called ____ that anchor them to their substrate

a. stipes b. blades c. holdfasts d. thalli e. rhizoids

Biology & Microbiology

Which protist structure serves as a flexible coat of armor?

a. Pellicle b. Cilia c. Flagella d. Pseudopodia

Biology & Microbiology

The source of the oxygen produced by photosynthesis has been identified through experiments using radioactive tracers. The oxygen comes from __________.

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

Biology & Microbiology