A ________ is an organism that requires the intake of chemical compounds such as carbohydrates, fats, and proteins.
Fill in the blank(s) with the appropriate word(s).
chemotroph
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Mature human sperm and ova are similar in that they _____
A) both have the same number of chromosomes B) are approximately the same size C) each have a flagellum that provides motility D) are produced from puberty until death E) are formed before birth
Based on the graph, what are the optimal temperatures for the human enzyme and hotsprings prokaryote enzyme?
A. The optimal temperature for the human enzyme is 30 degrees C. The optimal temperature for the hotsprings prokaryote enzyme is 60 degrees C.
B. The optimal temperature for the human enzyme is 40 degrees C. The optimal temperature for the hotsprings prokaryote enzyme is 72 degrees C.
C. The optimal temperature for the human enzyme is 46 degrees C. The optimal temperature for the hotsprings prokaryote enzyme is 79 degrees C.
D. The optimal temperature for the human enzyme is 35 degrees C. The optimal temperature for the hotsprings prokaryote enzyme is 65 degrees C.
The laboratory technique used to separate the DNA fragments produced by automated DNA sequencing is:
A. the polymerase chain reaction B. gel electrophoresis C. ultracentrifugation D. electron microscopy E. fluorescence microscopy
If you flip the light switch in your living room and nothing happens, what might be a good hypothesis to explain the absence of light?
A) The circuit breaker for the living room might be the "off" position. B) Electricity sometimes flows backward in a wire, preventing the light from shining. C) You might have made too many telephone calls this month, thereby reducing the amount of electricity in your lines. D) The air conditioner is also running upstairs, and it might be using all of the electricity available in your house at the moment.