Which of the following is/are the most common cause of pharyngitis?

A) Escherichia coli
B) Staphylococcus aureus
C) Streptococcus pyogenes
D) viruses


D) viruses

Biology & Microbiology

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Which of the following is NOT a condition of the Hardy-Weinberg equilibrium?

A. No differences in the survival and reproductive success of individuals B. No migration C. No mutation D. Random mating E. All of the conditions listed ARE conditions of the Hardy-Weinberg equilibrium.

Biology & Microbiology

The major virulence factor of Corynebacterium diphtheriae that causes serious systemic effects is its ________.

A. endospores B. capsule C. exotoxin D. metachromatic granules E. endotoxin

Biology & Microbiology

Animals obtain minerals such as phosphorus

a. primarily dissolved in drinking water. b. by inhalation. c. by eating herbivores. d. by metabolic conversion of other minerals. e. by none of these.

Biology & Microbiology

The blood brain barrier is the protective mechanism that helps maintain the brain's stable environment.

Answer the following statement(s) true (T) or false (F)

Biology & Microbiology