Osmosis is the:
A. active transport of water
B. number of solute particles in 1 kg of water
C. diffusion of water across cell membranes
D. defined as the weight of a volume of a solution divided by the weight of an equivalent volume of distilled water
E. amount of a substance relative to its molecular weight
ANS: C
You might also like to view...
The following are the steps involved in transmission at a cholinergic synapse. What is the correct sequence for these events? 1. Chemically-gated sodium channels on the postsynaptic membrane are activated. 2. Calcium ions enter the synaptic terminal. 3. Acetylcholinesterase hydrolyzes acetylcholine. 4. An action potential depolarizes the synaptic terminal at the presynaptic membrane. 5. The
pre-synaptic terminal reabsorbs choline. 6. Acetylcholine is released from storage vesicles by exocytosis. 7. Acetylcholine binds to receptors on the postsynaptic membrane. 8. Calcium ions are removed from the cytoplasm of the pre- synaptic terminal. A) 4, 2, 6, 7, 8, 5, 3, 1 B) 4, 2, 6, 7, 1, 8, 3, 5 C) 2, 4, 6, 7, 1, 8, 3, 5 D) 2, 5, 4, 6, 7, 1, 8, 3 E) 6, 4, 2, 7, 1, 8, 3, 5
The vertical osmotic gradient enables the kidneys to produce urine that ranges in concentration from 100 to mosm/liter to:
a. 300 mosm/liter. b. 600 mosm/liter. c. 900 mosm/liter. d. 1,200 mosm/liter. e. 1,500 mosm/liter.
Which is a characteristic of regular periodic waveforms?
A) Even, predictable frequencies B) Low-frequency pattern C) Low amplitude D) High amplitude
Which of the following occurs when the testosterone level is low?
A. Any further production of GnRH is inhibited. B. The overproduction of LH is prevented. C. FSH and LH production is increased. D. All of the answers are correct.