This type of membrane protein extends across the entire lipid bilayer of the plasma membrane touching both intracellular fluid and the extracellular fluid
a) complement protein
b) transmembrane protein
c) peripheral protein
d) lipoprotein
e) All of these choices are correct.
Answer: b
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Alveoli are kept clean by the action of
A. macrophages. B. platelets. C. antibodies. D. surfactant.
Consider the following condition: pupils dilated, digestive motility decreased, salivary gland activity decreased. Which of the following scenarios matches this condition of the person involved?
A. A student is relaxing in the cafeteria after a fairly easy day B. A mother is walking along the lake with her two children, who are behaving wonderfully today C. A motorist just avoided running over a small child playing in the road D. Both "A mother is walking along the lake with her two children, who are behaving wonderfully today" and "A student is relaxing in the cafeteria after a fairly easy day" are correct.
Which of the following is correct pertaining to the longitudinal ligaments of the vertebral column?
A) Both tend to limit hyperflexion. B) Both tend to limit hyperextension. C) The anterior limits hyperextension whereas the posterior limits hyperflexion. D) The anterior limits hyperflexion whereas the posterior limits hyperextension. E) Both limit lateral flexion. Ans: C
The stroke volume of the heart
1.increases when the end-diastolic volume decreases.
2.increases when the end-systolic volume increases.
3.is independent of autonomic input to the heart.
4. can only be varied by varying end-systolic volume.
5. increases with sympathetic stimulation because the end-systolic volume is decreased.