A person with type A positive blood has which antibodies?
a. A only
b. B only
c. A and B
d. neither A or B
e. Rh
ANSWER: b
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Gregor Mendel's pioneering genetic experiments with pea plants occurred before the discovery of the structure and function of chromosomes. Which of the following observations about inheritance in pea plants could be explained only after the discovery that genes may be linked on a chromosome?
(A) Pea color and pea shape display independent inheritance patterns. (B) Offspring of a given cross show all possible combinations of traits in equal proportions. (C) Most offspring of a given cross have a combination of traits that is identical to that of either one parent or the other. (D) Recessive phenotypes can skip a generation, showing up only in the parental and F2 generations.
You ask to hold the baby and feel a hard mass in the abdomen. Together with your chemical and physical findings, you decide to operate on the small intestine to remove what appears to be a cyst. If you're successful, what will the baby's digestive system be able to do now that it couldn't before?
a. Poop! b. Form pepsin c. Absorb sugars d. Break down fatty acids e. Absorb amino acids f. Break down carbohydrates g. Harbor bacteria
Necrotizing fasciitis is caused by
A) Staphylococcus aureus. B) Streptococcus pyogenes. C) Pseudomonas aeruginosa. D) Rickettsia rickettsii. E) both Streptococcus pyogenes and Staphylococcus aureus.
You are working in an aquarium that has been breeding an endangered species of fish for return into the wild. You have a batch of progeny from the first generation of breeding. The staff are discussing whether to return those fish to an area that has been completely depleted, or add them to a partially depleted population. "Considering the Allee effect, what do you say?
A. "The area with the other fish may reduce the partially depleted population's exposure to disease." B. "They may survive better in a large school, and will have an easier time finding mates." C. "They may do better in the empty area without any competition for territory." D. "They may do better in the empty area without any competition for food."