Agar is an excellent solidifying agent for microbiological media because ________.
A. solid agar remains solid until the temperature is raised to 90°C, and liquid agar remains liquid if the temperature is lowered to 45°C
B. it is not degraded by most microorganisms and solid agar remains solid until the temperature is raised to 90°C, and liquid agar remains liquid if the temperature is lowered to 45°C
C. it is not degraded by most microorganisms
D. agar provides an excellent source of nutrition for a variety of different microorganisms
Answer: B
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Which of the following statements about the distal convoluted tubule is false?
A. The filtrate entering the tubule is hypertonic relative to the interstitial space. B. Urea is the principal solute found within the filtrate in the distal convoluted tubule. C. Other wastes from the bloodstream are actively secreted into the distal convoluted tubule. D. The distal convoluted tubule delivers filtrate to the collecting duct. E. None of these statements about the distal convoluted tubule is false.
What is the complement DNA strand to 5?-ATTCGGTGA-3??
A. 5?-TAAGCCACT-3? B. 3?-CGGATTGTC-5? C. 5?-CGGATTGTC-3? D. 3?-TAAGCCACT-5? E. 3?-ATTCGGTGA-5?
A lower-than-normal white blood cell count is know as _______
Fill in the blank(s) with the appropriate word(s).
Humans become infected with Fasciola by
A) ingesting cysts on vegetation. B) consuming cysticerci in contaminated meat. C) ingesting water contaminated with eggs. D) the penetration of cercariae through the skin. E) the bite of infected mosquitoes.