The beginning of pregnancy is marked by:

A. ovulation.
B. fertilization.
C. implantation.
D. more than 24 weeks of gestation.


C

Biology & Microbiology

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Which of the following is normally treated by antifungal creams and solutions?

A. Subcutaneous mycoses B. Systemic mycoses C. Superficial mycoses D. Intramuscular mycoses

Biology & Microbiology

The equation, 6CO2 + 6H2O ?C6H12O6 + 6O2, describes which of the following processes?

A. light reaction B. nitrogen fixation C. photosynthesis D. Calvin cycle E. aerobic respiration

Biology & Microbiology

One of Chargaff's rules states that

A. A = G and T = C. B. A = T + G + C. C. A = C and T = G. D. A = T and G = C.

Biology & Microbiology

Various techniques have been developed to isolate strains of bacteria carrying a particular mutation. One of them is, bacteria containing wild-type cells and cells of a desired mutant are grown on a medium lacking the nutrient for which the desired mutants are auxotrophic but containing an antibiotic that only kills growing cells. In this environment,

A. wild-type cells die; mutant cells survive. B. wild-type cells survive; mutant cells die. C. both wild-type and mutant cells survive. D. only double mutants survive. E. both wild-type and mutant cells are killed.

Biology & Microbiology