Which of the following is a function of the myelin sheath?

Increases the rate of conduction of a nerve impulse
Moves sodium and potassium ions by active transport
Protects the dendrites of motor neurons
All of the above


A. Increases the rate of conduction of a nerve impulse

Biology & Microbiology

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Which of the following is the term for a ball of undifferentiated cells that results from repeated mitosis of a fertilized ovum?

A. cleavage B. blastula C. gastrula D. endoderm

Biology & Microbiology

All fungi are __________ that secrete digestive enzymes on organic matter and absorb released nutrients. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

Can you think of an alternative means of identifying successful bacterial transformants in this experiment?

What will be an ideal response?

Biology & Microbiology

Freezing food and then using a vacuum to draw off the ice crystals is called (dehydration/lyophilization/sublimation).

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

Biology & Microbiology