The opening that light passes through as it enters a single-lens eye is termed the

A. pupil.
B. retina.
C. sclera.
D. aqueous humor.
E. iris.


A. pupil.

Biology & Microbiology

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Human female germ cells form

a. before birth. b. shortly after birth. c. at puberty. d. during late teenage-hood. e. at fertilization

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The prokaryote operon model explains gene regulation at the level of

a. replication. b. transcription. c. transcript processing. d. transcript transport. e. translation.

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Describe an additional experimental approach used to study the cytoskeleton in which the activity of cytoskeletal elements is affected in ways similar to those resulting from drug treatment

Fill in the blank with correct word.

Biology & Microbiology

Cycads attract pollinators with large, fragrant flowers

Indicate whether the statement is true or false

Biology & Microbiology