Which of the following is/are used to categorize fungal diseases?
A. The type of sexual spores formed by the infecting fungus
B. The route by which the disease becomes established in the host
C. The environmental source of the fungi
D. The type of asexual spores formed by the infecting fungus
Answer: B
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TC cells express a(n) ________ protein co-receptor
A) CD4 B) CD8 C) IgM D) IgG
Several molecules of CO2 must be captured during the Calvin cycle of photosynthesis for every molecule of glucose that is manufactured.
a. true b. false
An ectopic pregnancy occurs when a fertilized egg implants somewhere other than in the lining of the uterus. Usually it implants in the oviduct. Which of the following would be the most likely explanation for such a pregnancy being unsuccessful?
A) The orientation of the baby would be sideways. B) Human chorionic gonadotropin (hCG) cannot be produced in the oviduct. C) The lining of the oviduct is unable to support the developing fetus. D) The necessary hormones cannot reach the developing fetus in the oviduct.
A population of voles (small mammals) live in a shady forest. Originally, the voles are a light tan color, but then a dark brown coloration arises by a new mutation. The darker voles are harder for predators to see in the leaf litter, thus they are less susceptible to predation. After 10 generations the majority of voles in the population are the dark brown color. What type of selection are the population of voles going through? 
A. Negative frequency-dependent selection. B. Directional selection. C. Balancing selection. D. Stabilizing selection. E. Diversifying selection (disruptive selection).