Mechanisms of bacterial resistance to antimicrobial agents include all of the following EXCEPT
A) alteration of ribosomes
B) alteration of an enzyme
C) development of enzymes
D) alteration of normal microflora
Ans: D) alteration of normal microflora
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If cell X enters meiosis, and nondisjunction of one chromosome occurs in one of its daughter cells during meiosis II, what will be the result at the completion of meiosis?
A) All the gametes descended from cell X will be diploid. B) Half of the gametes descended from cell X will be n + 1, and half will be n - 1. C) 1/4 of the gametes descended from cell X will be n + 1, 1/4 will be n - 1, and 1/2 will be n. D) Two of the four gametes descended from cell X will be haploid, and two will be diploid.
Protein synthesis on the primordial Earth may have been catalyzed by ____ before the evolution of enzymes
a. lightning b. RNA c. carbohydrates d. amino acids e. DNA
The nucleus separates the chromosomes from the rest of the cell. How is the information in the DNA communicated to the cell?
What will be an ideal response?
Labeled, known, short stretches of DNA used to detect a specific sequence of nucleotides in a mixture are
A. gel electrophoresis. B. genetic engineering. C. gene probes. D. recombinant DNA. E. biotechnology.