The first question in this dichotomous key addresses
a. oxygen tolerance.
b. bacterial morphology.
c. metabolic characteristics.
d. Gram stain differences.
Answer: d. Gram stain differences.
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In ____________, fats accumulate on the inner walls of the arteries, narrowing the diameters of arteries and also leading to elevated blood pressure.
A. a heart murmur B. Purkinje fibrosis C. erythrocytosis D. atherosclerosis
Sex pili are prokaryotic structures that are used
A) for gathering prey. B) for movement. C) during conjugation. D) during binary fission. E) for adhering to surfaces.
John has alkaptonuria; it "runs in the family". John and his grandmother are both homozygous for alkaptonuria. John's grandmother has two brothers and a sister. One of the brothers had alkaptonuria and his daughter is John's mother. Based on this information, John's parents are:
a. Both homozygous for the alkaptonuria gene. b. Both heterozygous for the alkaptonuria gene. c. Not carrying the alkaptonuria gene. d. There isn’t enough information.
Which of the following is a protozoan stage that allows for transmission of intestinal parasites from one host to another?
A) cyst B) merozoite C) schizont D) foraminifera E) kinetoplast