Need help with these questions. 1. How might antibiotic resistance genes be tran

Question

Need help with these questions.

1. How might antibiotic resistance genes be transferred between members of a microbial population?

A) conjugation

B) transformation

C) transduction

D) all of the above

E) only B and C

2. In order to be effective, the minimum concentration of a drug in the body must be

A) at or higher than the pathogen's minimal lethal concentration (MLC)

B) at or higer than the pathogen's minimal inhibitory concentration (MIC)

C) lower than the pathogen's MLC

D) lower than the pathogen's MIC

3. Sulfa drugs..

A) interfere with ribosome synthesis

B) interfere with amino acid synthesis

C) interfere with peptidoglycan cross-linking

D) interfere with folic acid synthesis

4. Which part of an antibody binds to the antigen?

A) variable region

B) heavy chains

C) light chains

D) constant region

Explanation / Answer

(1)

D) all of the above

Bacteria can acquire antibiotic resistance genes from other bacteria by conjugation ( simple mating process), transformation (direct uptake of exogenous genetic material) and also by transduction (bacteriophage mediated gene transfer).

(3)

D) interfere with folic acid synthesis

Sulfa antibiotics inhibit the pathway that bacteria use to synthesize folic acid,

(4)

A) variable region

Antigen binding region of antibody is called paratope, It is the part of the variable domain of an antibody that recognizes and binds to an antigen

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