Over time, the populations of most species ________
A) fluctuate
B) increase rapidly, crash, and never recover
C) continuously increase
D) exhibit boom-and-bust cycles
A
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The sporophyte generation of kelp is dominant and larger than the gametophyte
Indicate whether the statement is true or false
21. The volume enclosed by the plasma membrane of plant cells is often much larger than the corresponding volume in animal cells. The most reasonable explanation for this observation is that
a. plant cells are capable of having a much higher surface-to-volume ratio than animal cells. b. plant cells have a much more highly convoluted (folded) plasma membrane than animal cells. c. plant cells contain a large vacuole that reduces the volume of the cytoplasm. d. animal cells are more spherical, while plant cells are elongated. e. the basic functions of plant cells are very different from those of animal cells.
Excretion is the movement of substances from the ________ to the ________
A) filtrate... blood B) kidney... urinary bladder C) blood... filtrate D) kidneys... outside
Patients who have type 2 diabetes no longer respond normally to insulin. Which statement best explains this symptom?
A. The signal transduction pathways in the cells no longer exist. B. The nucleus of their cells are altered so that insulin can not bind. C. Type 2 diabetics do not produce insulin. D. The insulin receptors on their cells have mutated. E. Their cells express less insulin receptor.