Which is incorrect about the MMR immunization?

A. It provides protection against 3 different viral diseases.
B. It contains attenuated viruses.
C. It contains toxoids.
D. It is given in early childhood.
E. None of the choices are correct.


Answer: C

Biology & Microbiology

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In the back and forth evolutionary struggle between plants and virulent bacteria, plants use ____ immunity to combat

the bacteria.

a. effector-triggered b. systemic acquired c. gene-for-gene d. hypersensitive e. jasmonate response

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Which statement about steroid hormones in invertebrates and vertebrates is most accurate?

a. An invertebrate hormone injected into a vertebrate would have a greater effect than the endogenous hormone. b. A vertebrate hormone injected in an invertebrate would have a greater effect that the endogenous hormone. c. The reaction pathways stimulated by steroid hormones in invertebrates and vertebrates are similar. d. The reaction pathways stimulated by steroid hormones in invertebrates and vertebrates are different. e. Invertebrates do not produce steroid hormones.

Biology & Microbiology

Diphtheria toxin is produced only by those strains of crynebacterium dyphtheriae that are

A. glucose fermenters B. sucrose fermenters C. lysogenic for beta-prophage D. gram-positive E. gram-negative

Biology & Microbiology

Antimicrobics effective against a wide variety of microbial types are termed

A) Narrow-spectrum drugs B) Semisynthetic drugs C) Broad-spectrum drugs D) Synthetic drugs E) Antibiotics

Biology & Microbiology