Which of the following is considered an opportunistic pathogen?

A) Toxoplasma gondii
B) Trichomoniasis vaginalis
C) Candida albicans
D) Plasmodium vivax


Answer: C

Biology & Microbiology

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Soil mineral particles that are less than 0.002 mm in diameter are called

a. sand. b. humus. c. clay. d. silt. e. microparticles.

Biology & Microbiology

During which epoch does a major extinction event begin?

a. Eocene b. Oligocene c. Miocene d. Pleistocene e. Recent

Biology & Microbiology

Purple flower (A) is dominant over white flower (a), and tall stem (B) is dominant over short stem (b). The Punnett square

represents a cross between two dihybrids (AaBb ? AaBb). In the figure above, how many plants would have purple flowers and tall stems?

a. 1 b. 3 c. 5 d. 9 e. 16

Biology & Microbiology

A circulatory system that keeps blood confined within vessels after leaving the heart is

A. a closed circulatory system. B. a gastrovascular cavity. C. an open circulatory system. D. an incomplete circulatory system. E. a complete circulatory system.

Biology & Microbiology