If the surface area of a cell increases by a factor of 100, the volume of that cell will
A) remain the same.
B) increase by a factor of 100.
C) increase by a factor of 1000.
D) increase by a factor of 10.
E) decrease by a factor of 100.
Answer: C
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Marine plants may contribute to the prevention of algal blooms by:
a. trapping sediments. b. absorbing excess nutrients. c. removing toxic organic pollutants. d. producing detritus. e. blocking sunlight.
You cut a stalk of celery and put it in a glass of water containing red food coloring overnight. The next morning you observe the celery stalks are now red. This has occurred because the conducted the colored water up through the stalks.
A. phloem B. ground tissue C. xylem D. dermal tissue E. stomata
Blood in arteries
a. always travels away from the heart. b. travels away from the heart only if it is oxygen rich. c. always travels toward the heart. d. travels from the lungs. e. is always oxygen rich.
Which is NOT true of prokaryotes?
A) They contain ribosomes. B) Their cells contain a true nucleus. C) Their genes contain exons. D) They include bacteria. E) They are single-celled organisms.