Where in a diatom would you find its yellowish photosynthetic pigment?
A. in the plasma membrane
B. in the cell wall
C. in the cytoplasm
D. in chloroplasts
E. in the nucleus
D. in chloroplasts
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What will be an ideal response?
In aquatic environments, the three major environmental gradients of water that directly influence the distribution and dynamics of communities include
A) temperature, depth, and oxygen content. B) depth, flow rate, and salinity. C) pressure, temperature, and depth. D) flow rate, salinity, and oxygen content.
If a person were born with the inability to produce pepsin, how would this affect his or her digestion?
A) He or she could not break down lactose. B) He or she would digest proteins with difficulty. C) He or she would fail to metabolize glucose. D) He or she would no longer be able to absorb DNA.
Triclosan, a chemical in most "antibacterial" soaps,
A) is considered to be the "miracle antiseptic" in household use. B) has led increased resistance of microbes to other antibacterial agents. C) is superior to regular soap and water. D) kills fungi and viruses as well as bacteria.