The following amoeboid protozoans are important sources of silica deposits in some areas of the world:

a. diatoms.
b. silicoflagellates.
c. radiolarians.
d. foraminiferans.
e. ciliates.


C

Biology & Microbiology

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What will be an ideal response?

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Which structures will make up the thick filaments of a muscle fiber? a. Sarcomeres b. None of these choices

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Suppose an efficient conducting system evolved in a moss that could transport water and other materials as high as a tall tree. Which of the following statements about "trees" of such a species would be FALSE?

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Biology & Microbiology

A microaerophile

A. needs normal atmospheric levels of oxygen. B. grows best in an anaerobic jar. C. requires a small amount of oxygen but won't grow at normal atmospheric levels. D. grows with or without oxygen.

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