Which characteristic defines a virus?
a. Viruses cannot replicate.
b. Viruses cannot metabolize.
c. Viruses contain both RNA and DNA.
d. Viruses have various morphologies.
e. Viruses are very tiny cells with nuclei.
b
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Which zone does not occur in the sandy beach?
a. resurgence b. drying sand c. saturation d. retention e. maintenance
When energy captured by antenna pigments of LHCII is funneled to the reaction center it changes the reduction potential of a P680 chlorophyll a molecule to ________, making it a better electron ________
A) ?0.80 V; donor B) ?0.80 V; acceptor C) +0.80 V; donor D) +0.80 V; acceptor E) None of the above are correct.
Refer to Figure 42-2. When an electrical impulse travels along the neuron labeled 2:
a. the hand will be extended. b. the hand will be withdrawn. c. the fingers will flex. d. the fingers will extend. e. the hand will remain stationary.
Organize the sequence of structures through which sperm must pass upon ejaculation
1) urethra 2) ejaculatory duct 3) epididymis 4) vas deferens a. 3 ? 2 ? 1 ? 4 b. 3 ? 4 ? 2 ? 1 c. 2 ? 3 ? 4 ? 1 d. 2 ? 4 ? 3 ? 1 e. 4 ? 3 ? 2 ? 1