In the future, it may be possible to slow muscle
loss from diseases and aging by inhibiting
myostatin production. However, which of the
following might be adversely affected?
a. ligaments
b. tendons
c. heart muscle
d. actin production
e. ATP production
B
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The AP-1 transcription factor is a heterodimer of the Fos and Jun proteins. What is the protein-dimerization motif present in these two proteins?
A. basic leucine zipper B. helix-turn-helix C. zinc finger D. homeodomain
A group of organisms sharing a derived trait is known as a ____
a. clade b. taxon c. tribe d. community e. population
During an ecology field trip to a lake, your professor asks you to take temperature readings at various depths and record your data. At 5 meters, you note a temperature of 25°C and at 10 meters you record a temperature of 10°C. Readings at 20 meters and below stay fairly consistent around 8°C. The temperature readings of 25°C, 10°C, and 8°C represent the
A. hypolimnion, thermocline, and epilimnion. B. epilimnion, thermocline, and hypolimnion. C. hypolimnion, epilimnion, and thermocline. D. epilimnion, hypolimnion, and thermocline. E. thermocline, epilimnion, and hypolimnion.
A student observes a flask containing a mixture of yeast, water, and a carbohydrate; the top of the flask is covered by a balloon. After 30 minutes, what waste products would she expect to find in the flask and balloon?
A carbon dioxide and ethyl alcohol B carbon dioxide and lactic acid C oxygen and glucose D oxygen and starch