The organelle that best enables an athlete's tissues to be metabolically active are 

A. mitochondria.
B. ribosomes.
C. lysosomes.
D. contractile vacuoles.
E. smooth endoplasmic reticulum.


Answer: A

Biology & Microbiology

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Which statement about autotrophs is true?

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Phytochemicals are

a. essential for survival. b. produced in laboratories exclusively. c. not essential but can prevent some disorders. d. cofactors for cellulose degradation. e. none of these.

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

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

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Nucleoli are present during _____.

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

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