DNA sequences called ____ increase the rate of RNA synthesis after initiation of transcription
a. promoters
b. TATA boxes
c. silencers
d. enhancers
e. regulators
d
You might also like to view...
What happens during depolarization?
A. Potassium ions flow out of the cell. B. Sodium ions flow into the cell. C. The sodium/potassium pump protein reverses itself. D. Potassium ions flow out of the cell AND sodium ions flow into the cell.
Which of the following is the correct order
from largest unit to the smallest?
a. muscle fiber>>myofibril>>sarcomere>>filaments b. myofibril>>muscle fiber>>sarcomere>> filaments c. sarcomere>>myofibril>>filaments>>muscle fiber d. muscle fiber>>sarcomere>>myofibril>>filaments e. muscle fiber>>filaments>>myofibril>>sarcomere
All the body fluid located outside of cells is
a. interstitial fluid. b. plasma. c. intracellular fluid. d. extracellular fluid.
The different chipmunk species correspond to the different tree species along an elevational gradient. This is likely because
A) each chipmunk species depends on the specific tree species for habitat. B) lodgepole trees and lodgepole chipmunks prefer warmer temperatures. C) the fundamental niche of yellow-pine chipmunks is limited to middle elevation. D) several resource factors for both groups change with elevation.