Vacuoles for ingesting food and regulating their water balance are characteristic of
A. sporozoans.
B. trypanosomes.
C. ciliates.
D. algae.
E. spirochetes.
C. ciliates.
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What would be the effect on phloem transport of a mutation in the sucrose transport protein that caused ATP to not bind efficiently?
A. There would be no effect. B. Water diffusion into the phloem would increase. C. Turgor pressure would be reduced. D. The direction of the flow of sap would be reversed.
. Language and abstract thought are possible due
to
a. the cerebellum. b. the pons. c. the cerebral cortex. d. the medulla oblongata. e. the midbrain
Which line, A, B, C, or D, points to tracheids and vessels in xylem?
1.A
2.B
3.C
4.D
Which of the following nitrogenous bases is usually found in RNA but not in DNA?
A. Guanine B. Thymine C. Uracil D. Adenine