Does the ability of a Mycobacterium tuberculosis cell to infect a new host depend on its drug-resistant phenotype?

A. Yes, drug-susceptible cells can infect a new host more easily than drug-resistant cells.
B. Yes, drug-resistant cells can infect a new host more easily than drug-susceptible cells.
C. No, drug-susceptible cells and drug-resistant cells are equally likely to infect a new host.


Answer: C. No, drug-susceptible cells and drug-resistant cells are equally likely to infect a new host.

Biology & Microbiology

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Competitive exclusion is based on the idea that:

a. one species will voluntarily allow the other to survive b. no two species can completely occupy the same niche c. the larger species will always dominate the smaller d. competition is overrated as a factor in species survival e. two species can live together if they share the same niche but use it at different times

Biology & Microbiology

Describe the macroscopic anatomy of the human excretory system

What will be an ideal response?

Biology & Microbiology

The relationship between reef-building coral animals and zooxanthellae is classified as:

a. mutualism. b. commensalism. c. Batesian mimicry. d. parasitism. e. character displacement.

Biology & Microbiology

Pepsin converts ____ to ____

a. starch; sugars b. proteins; peptides c. fats; fatty acids and glycerol d. nucleic acids; nucleotides e. peptides; amino acids

Biology & Microbiology