Which of the following factors do not influence the action of enzymes?
A. the amount of reactant in the cell
B. temperature of the cytoplasm
C. pH of the cytoplasm
D. presence of a repressor
E. relative humidity
Answer: E
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The lac operon is an example of ________ control in which the presence of an ________ is required for transcription to occur
A) negative / activator B) negative / inducer C) positive / activator D) positive / inducer
The fungi are most closely related to:
A. haploid protists because they both have haploid nuclei. B. arthropods because they both have chitin. C. plants because they both grow in the ground.
The only known human pathogen that preferentially attacks the peripheral nerves is
A. N. meningitidis. B. polio virus. C. E. coli. D. M. leprae.
The amount of enzyme activity in a cell that is homozygous for a mutant allele is 400 units. The amount of enzyme activity in a cell homozygous for the WT allele is 200 units. The amount of enzyme activity in a heterozygote is 300 units
What is the dominance relationship between the WT and mutant allele for the phenotype of amount of enzyme per cell? A) The WT allele is dominant. B) The mutant allele is dominant. C) The WT and mutant alleles are codominant. D) The WT and mutant alleles show incomplete dominance. E) It is impossible to determine from the information given.