In humans, sex-linked means the gene is on what chromosome?
A. X
B. Y
C. Z
Answer: A. X
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Which of the following gives the correct rank order for relative energetic cost (most to least) of the primary nitrogenous wastes used by different animals?
A. ammonia ? urea ? uric acid B. uric acid ? urea ? ammonia C. urea ? uric acid ? ammonia D. ammonia ? uric acid ? urea E. urea ? ammonia ? uric acid
What does a CAM plant do with the malate produced by its C4 pathway?
a. distribute it to bundle sheath cells b. store it in the central vacuole c. make immediate use of it d. store it in the stroma
________ would produce the smallest evolutionary change in a given period of time in a population of birds.
A. Migration B. Gene flow C. Mutation D. Assortive mating E. Natural selection
Cultures taken from an impetigo lesion reveal bacteria that are Gram-positive cocci which are catalase- and coagulase-negative and cause beta-hemolysis when cultured on blood agar. The responsible species is
A) Staphylococcus aureus. B) staphylococci species other than Staphylococcus aureus. C) Streptococcus pyogenes. D) Pseudomonas aeruginosa. E) Clostridium perfringens.