Phospholipids are important components of the plasma membrane. What does "E" represent on the diagram?
A. Phosphorus
B. Nonpolar (hydrophobic) region
C. Nitrogen
D. Oxygen
E. Polar (hydrophilic) region
Answer: D
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Sequence the following events involved in muscle cell contraction:
1 . Sodium channels open and sodium flows in. 2 . Impulse reaches the axon's terminal. 3 . ACh binds to receptors on the muscle cell membrane. 4 . Synaptic vesicles fuse with neuron's membrane and release ACh via exocytosis. 5 . If enough sodium moves in to the muscle cell, an impulse (action potential) develops. a. 1, 2, 3, 4, 5 b. 2, 1, 3, 4, 5 c. 2, 4, 3, 1, 5 d. 3, 4, 5, 1, 2 e. 3, 5, 2, 1, 4
Bile contains:
What will be an ideal response?
A retroperitoneal structure
A) is covered by both the greater and lesser omenta. B) has only its anterior surface covered by peritoneum. C) is encased within the lesser omentum. D) has greater freedom of movement than an organ enclosed by the mesenteries. E) None of the answers are correct
Mona had some axillary lymph nodes and lymphatic vessels removed from her left arm during a recent surgery. Determine why she experiences edema (swelling) in that arm
What will be an ideal response?