The first portion of the small intestines is the ____
a. cecum
b. jejunum
c. ileum
d. duodenum
e. appendix
ANSWER: d
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A histidine, methionine auxotroph _________
A. can synthesize only histidine and methionine B. can only use histidine and methionine as nutrition sources C. cannot synthesize histidine and methionine D. is killed by histidine and methionine E. lacks proteins with histidine or methionine
In cats, the dominant white gene (W) may or may not also cause deafness. Homozygotes are more likely to be deaf than heterozygotes
If you breed heterozygous white cats together and produce 100 kittens, how many would you expect to be deaf if all the proportions came out perfectly? Assume that heterozygotes have an 8% chance of being deaf, and homozygotes a 60% chance of being deaf.
Sarah loved to run in the dry desert town of Needles, CA. However, when she moved to Mobile, AL, on the coast of the Gulf of Mexico, she was surprised that when she went out for a jog at 91°F (33°C), she developed dizziness and confusion sooner
than she had in the desert at the same temperature. She is probably suffering from ________. A) hypothermia B) hypothalamus C) homeostasis D) hyperthermia
Which of the following is the correct sequence of events during mitosis?
A) Nuclear membrane dissolves, chromosomes line up, chromosomes split, nuclear membrane forms B) Nuclear membrane forms, chromosomes line up, chromosomes split, nuclear membrane dissolves C) Chromosomes line up, nuclear membrane forms, nuclear membrane dissolves, chromosomes split D) Chromosomes split, nuclear membrane dissolves, nuclear membrane forms, chromosomes line up