When odorant molecules contact the dendritic processes of olfactory receptors the initial response is
A) an action potential.
B) activation of a kinase.
C) a generator potential.
D) a hyperpolarization potential.
E) a conversion of 11-trans retinal to 11-cis retinal.
C
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In many of the elderly, leukocytes appear to be
A. decreased in number and less efficient. B. decreased in number but more efficient. C. increased in number but more efficient. D. increased in number and more efficient.
Which of the following is a term that can be used instead of dorsal?
What will be an ideal response?
When fatty acids are metabolized for cellular respiration, the first step involves breaking two carbons off the chain at a time to form acetyl CoA molecules. Acetyl CoA then
A. is converted to pyruvate and lactate. B. begins the electron transport chain. C. undergoes glycolysis. D. enters the citric acid cycle.
The range of motion at the shoulder is greater than the range of motion at the hip because ________
A) the humerus is held tightly to the glenoid fossa B) very strong ligaments wrap around the humerus in all directions to hold it to the pectoral girdle C) the pectoral girdle forms a complete circle and is firmly attached to the axial skeleton D) the glenoid fossa is a very shallow cavity