Total lung capacity is indicated by ____
a. A + B
b. B + C
c. C + E
d. D + E
e. E + A
ANSWER: c
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How does a species benefit from engaging in mimicry?
a. Discouraging predators b. Obtaining energy c. Preventing parasites d. Increasing habitat size
Cytokinesis in plant cells differs from cytokinesis in animal cells because
a. the contractile protein, actin, is important only in plant cells. b. a contractile ring forms only in plant cells. c. in plant cells, the cell plate must also divide into two parts. d. plant cells have a rigid cell wall. e. there is no difference.
Which of the following antimicrobials does not inhibit DNA synthesis?
A. Chloroquine B. Quinolone C. Azidothymidine D. Penicillin E. Acyclovir
Indicate by writing "yes" or "no" whether amplification of a signal could occur at the particular steps described below. Explain your answers
A. An extracellular signaling molecule binds and activates a GPCR. B. The activated GPCRs cause G? to separate from G? and G?. C. Adenylyl cyclase produces cyclic AMP. D. cAMP activates protein kinase A. E. Protein kinase A phosphorylates target proteins.