Most of the amino acid-based hormones affect the target organs using ___.
A. intracellular second messengers
B. intracellular receptors
C. direct activation of genes
D. relay proteins
Ans: A. intracellular second messengers
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A. Basal cells in the taste buds B. Ganglion cells C. Auditory hair cells D. Olfactory receptors E. Bipolar cells
Individuals who are nearsighted, or ________, see close objects clearly, but see distant objects as blurry
A) emmetropic B) hyperopic C) myopic
The expiratory neurons control the ________ muscles, whereas the inspiratory neurons control the ________ muscles.
A) diaphragm and internal intercostal, abdominal and external intercostal B) diaphragm and external intercostal, abdominal and internal intercostal C) diaphragm and abdominal, intercostal internal and external D) abdominal and internal intercostal, diaphragm and external intercostal E) abdominal and external intercostal, diaphragm and internal intercostal
Which type of membrane proteins form a passageway through the plasma membrane?
A. Receptor proteins B. Marker molecules C. Channel protein D. Enzymes E. Carrier proteins