Hair cells are delicate sensors of sound, movement, and gravity. They are stimulated by movement of the stereocilia, which are actually microvilli, and the single kinocilium, which is a true cilium.One patient at your audiology clinic has an actin defect, and another patient has a microtubule defect. What sense other than hearing may be affected in these patients?
A. Touch
B. Taste
C. Balance
D. Proprioception
E. Smell
Answer: C
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An excess of synonymous to non-synonymous differences the FoxP2 sequence of humans relative to the FoxP2 sequence of chimpanzees implies that:
A. FoxP2 is a highly conserved transcription factor. B. The function of FoxP2 has been under positive selection in the human lineage but that the expression pattern of FoxP2 has not. C. The expression pattern of FoxP2 has been under positive selection in the human lineage but that the function of FoxP2 has not. D. The function of FoxP2 has been under positive selection in the human lineage. No inferences regarding the effect of positive selection acting on the expression pattern of FoxP2 are possible based on these data.
Distinguish between the central and peripheral nervous systems
What will be an ideal response?
Which of the following dicotyledon root tissues/cells are in order from the outside of the root to the inside?
a. epidermis, cortex, endodermis, pericycle, vascular tissue b. epidermis, cortex, pericycle, endodermis, vascular tissue c. epidermis, cortex, pericycle, vascular tissue, endodermis d. epidermis, cortex, endodermis, vascular tissue, pericycle e. epidermis, pericycle, cortex, endodermis, vascular tissue
Transfer RNA differs from other types of RNA
because it a. transfers genetic instructions from cell nucleus to cytoplasm. b. specifies the amino acid sequence of a particular protein. c. carries an amino acid at one end. d. contains codons. e. does none of these.