How are fish gills able to increase the efficiency of oxygen removal from water?
A) the opeculum pumps water through the gills
B) the flow of blood over the gills is opposite the flow of H2O
C) the number of blood vessels are increased in the operculum
D) the oxygen is taken in through the cloaca and sent to gills
Ans: B) the flow of blood over the gills is opposite the flow of H2O
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Schizogony
A. means multiple fissions. B. is performed by bacteria. C. is performed by protozoa. D. is a form of reproduction. E. means multiple fissions AND is performed by protozoa.
The yolk sac is indicated by
a. A. b. B. c. C. d. D. e. E.
Impulses are received by nerve cells through
a. an axon. b. any process that is long enough to reach the receptor. c. numerous dendrites. d. the intervention of the neuroglia. e. chondrocytes.
Cells found in plants and animals have similarities but can differ in function. Consider the following two organisms: a corn plant cell (Zea mays) and a camel cell (Bactrianus ferus). What is the best explanation for the difference in the cellular vacuole size between these two biotic organisms?
A. The corn cells' have a small vacuole size because it does not need long term water and electrolyte storage. B. The camel cells' have a small vacuole size because it does not need long term water and electrolyte storage. C. The camel cells' have a small vacuole size because it is not in contact with toxins that need to be removed from the cell. D. The corn cells' have a large vacuole size because it is in contact with many toxins in the soil which need to be removed from the cell.