With regard to DNA topology, which of the following is not a continuous deformation?
A. conformational changes due to stretching
B. conformational changes due to thermal motion
C. conformational changes due to interaction with proteins
D. conformational changes due to interaction with molecules other than proteins
E. conformational changes due to DNA strand breakage
E
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Caffeine from the coffee plant is stored in
a. central vacuoles. b. chloroplasts. c. chromoplasts. d. leucoplasts.
If the probability of a chicken having a black tail is 1/4 and the probability of it being a female is 1/2, what is the probability of having a black-tailed female?
a. 1/4 b. 1/2 c. 1/8 d. 1/6
Which of the following can describe osmosis?
a. an active transport process b. a type of endocytosis c. the diffusion of water d. the process of moving solutes through the cell
Convert 1mL to liter.
A. 0.01 liter B. 100 liters C. 10 liters D. .001 liters