Which of the following is NOT a function of the eukaryotic cytoskeleton?
A) anchors organelles
B) gives shape to the cell
C) packages cellular secretions
D) performs endocytosis
E) aids in contraction of the cell
C
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Which of the following is the primary advantage of C4 plants over C3 plants?
A. C4 plants minimize photorespiration compared with C3 plants. B. C4 plants can produce sugars more efficiently than C3 plants under hot, arid conditions. C. C4 plants can produce CO2 needed for sugar production in the Calvin cycle more efficiently than C3 plants. D. Relative to C3 plants, C4 plants can keep their stomata closed more frequently to limit water evaporation, yet can still produce significant CO2 needed for sugar production. E. All of the choices are correct.
When would the human body produce the most lactic acid?
a. after falling into a deep sleep b. after eating a large meal c. during prolonged exercise d. while drinking a glass of milk
Which of the following describe both tunicates
and lancelets?
a. invertebrates b. chordates c. gill slits d. notochords in the larvae e. all of these describe both tunicates and lancelets
During the stage called neurulation, a flexible rod called a ________ forms along the midline of the dorsal surface of the embryo.
A. neural groove B. notochord C. somite D. dorsal nerve cord