Single celled eukaryotic cells belong to which of the following kingdoms?
A. Monera
B. Protista
C. Fungi
D. Animalia
E. Plantae
Ans: B. Protista
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The commensal Neisseria spp. are often confused with pathogenic gram-negative diplococci. A simple test utilizing a blood agar plate and an antibiotic disk resulting in elongation of the cells assists in the differentiation of these organisms. Which antibiotic disk is utilized in this applica-tion?
a. Cephalosporin b. Vancomycin c. Penicillin d. Metronidazole
Which organisms would be part of a grazing food chain but not a detrital food chain?
a. herbivores b. detritivores c. bacteria d. worms e. producers
What happens first after chlorophyll absorbs light energy?
A) Water splits into H+ and O2. B) Hydrogen ions combine with electrons to produce NADPH. C) Electrons are released and move to a higher energy level. D) Carbon dioxide is converted to sugar.
Antibodies are
A. specific molecules, or parts of molecules, that the body recognizes as foreign. B. enzymes secreted to destroy a pathogen's cell wall. C. proteins on the surface of our cells to which pathogens attach. D. cells that protect the body against invaders. E. proteins the body produces against invading substances.