Which of the following processes is least likely to be coupled to eukaryotic transcription?
A. DNA repair
B. DNA replication
C. RNA processing
D. mRNA transport
E. All of the choices given are coupled to eukaryotic transcription.
B
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In the late 1870s, Charles Darwin and his son, Francis, discovered that if the tip of the grass was covered, phototropism did not occur, even though the rest of the grass was exposed to light. However, if the rest of the plant was covered and only the tip exposed to light, the grass bent a few centimeters below the tip. Which of the following was sensing the light?
A. auxin-detecting cells in the tip of the grass B. auxin-producing cells in the tip of the grass C. auxin-producing cells a few centimeters below the tip of the grass D. auxin-detecting cells a few centimeters below the tip of the grass
Turtles are members of which lineage?
a. Sphenodontia b. Squamata c. Testudines d. Archosauromorpha
Which of the following is not an adaptation to bipedalism in early hominids?
a. curvature of the spine b. shorter pelvis c. alignment of the big toes with the rest of the toes d. decrease in the length of the legs relative to the arms e. moving the foramen magnum to the base of the skull
Mail-order catalogs often advertise a device for repelling irritating insects. One device has a frequency range from 30,000 to 65,000 cycles per second (Hz). Humans hear from roughly 50 to 15,000 cycles per second. In designing an experiment to determine if this device actually does repel a certain insect, what question(s) should you ask?
A. Is the target insect able to perceive a sound between these frequencies? B. Does the insect move away from this sound device at a rate higher than random chance? C. Does the insect produce any sounds within this range that would lead to a biological function to perceiving such frequencies? D. Does the insect approach this sound device at a rate higher than random chance? E. All of the choices are correct.