Pigment molecules are most like
a. microwave ovens.
b. antennas.
c. microphones.
d. a computer mouse.
e. dvds.
B
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Explain how nutrient-rich runoff can cause waters to become hypoxic
A. Algae and cyanobacteria flourish on the nutrients in the run-off. Heterotrophic microbes then flourish on the organic molecules produced by these organisms, using oxygen in the process. This consumption of oxygen leads to a hypoxic state in the area. Larger animals cannot survive in the hypoxic area. B. Algae and cyanobacteria flourish on the nutrients in the run-off, using oxygen in the process. This consumption of oxygen leads to a hypoxic state in the area. Larger animals cannot survive in the hypoxic area. C. The nutrients in the run-off often include chemicals that spontaneously oxidize in the presence of oxygen. As such, they tend to deplete the amount of oxygen present in an area simply by being present themselves. This consumption of oxygen leads to a hypoxic state in the area. Larger animals cannot survive in the hypoxic area. D. It doesn't. This claim is a scare tactic used by environmental extremists to prevent farmers and individuals from fertilizing their crops and lawns. There is no induction of a hypoxic state in bodies of water where run-off occurs.
Which reason does not explain the presence of bicarbonate in seawater as being important? a. Bicarbonate makes seawater slightly alkaline
b. Bicarbonate is able to release hydrogen ions in the water. c. Bicarbonate is able to maintain a stable environment for marine organisms. d. Bicarbonate is able to maintain pH levels at a relatively constant value.
If this mRNA is transcribed in the nucleus and translated in the cytoplasm, what amino acid sequence is encoded?
A) Phe Asp His B) Met Asn Gly Trp C) Met Asn Gly D) Translation will not begin.
The branch of microbiology that deals with diseases of humans and animals is called ________ microbiology.
Fill in the blank(s) with the appropriate word(s).