An increase in the rate of oxygen production by algae would be accompanied by a comparable increase in the rate of production of which of the following substances?
a. C6H12O6
b. CO2
c. CH4
d. NH3
e. H2O
Ans: a. C6H12O6
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The promoters of positively controlled operons require activator proteins, because
A) RNA polymerase easily recognizes the consensus sequence. B) they are required to inactivate the repressor proteins. C) the promoters have nucleotide sequences that bind RNA polymerase weakly, which are not close matches to the consensus sequence. D) they are needed to bind to the allosteric site of RNA polymerase.
The diagram below represents a protein electrophoresis gel with samples from six individuals tested for variants (alleles A and B) of a single protein. What are the genotype frequencies?
A. 33.3% A, 66.6% B B. 75% A, 25% B C. 25% B, 75% A D. 66.6% A, 33.3% B E. Can't determine the frequency from this information.
If the frequency of PKU, an autosomal recessive disease, is 1% in males, what is the frequency of females with PKU? (You may assume that the population is in Hardy-Weinberg equilibrium.)
What will be an ideal response?
A person who cannot make enough of the plasma protein ________ might have problems with water balance
Fill in the blank(s) with correct word