As the size of a population approaches the carrying capacity
A. the number of births and deaths are about equal.
B. the population is in the lag phase.
C. density-dependent limiting factors are not important.
D. the biomass decreases.
A. the number of births and deaths are about equal.
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The negatively charged components of atoms are referred to as:
A. protons B. electrons C. anions D. neutrons E. cations
Chemical messengers produced in one part of the body that control the activity of other parts are called _________
Fill in the blank(s) with the appropriate word(s)
An antimicrobial agent that inhibits the growth of bacteria is called
A. Bacteriostatic B. Bacteriocidal C. Synergistic D. Broad spectrum
One inhibitor of cGMP is Viagra. It provides a signal that leads to dilation of blood vessels and increase of blood in the penis, facilitating erection. Since cGMP is inhibited, the signal is prolonged. The original signal that is now inhibited would have
A) hydrolyzed cGMP to GMP. B) hydrolyzed GTP to GDP. C) phosphorylated GDP. D) dephosphorylated cGMP. E) removed GMP from the cell.