Phytochrome is a light receptor that influences:
A. stomata opening and closing
B. leaf drop
C. stem elongation
D. active transport in cell membranes
E. flowering
E. flowering
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Differential media result in which of the following observable characteristics?
A. Gas bubbles B. Differently colored colonies C. Different media color after incubation D. Chemical precipitates E. All of the choices are correct.
Which of the following is an example of the second law of thermodynamics?
a. Conversion of the energy in sunlight into glucose b. The use of gasoline to propel your car c. ATP activation of a proton pump. d. A light bulb heats up after use e. A nuclear reactor lights up the city.
Approximately _____% of the energy at one trophic level is passed on to the next highest trophic level.
a. 0-5 b. 5-10 c. 10-15 d. 15-20 e. 90-100
Which mRNA modification is likely absent if the mRNA is degrading prematurely from the 5? end of the mRNA?
A) removal of introns B) RNA editing C) addition of the 7-methylguanosine cap to the 5? end D) addition of the 3? polyadenylated tail E) splicing together of exons