The "one-gene/one-enzyme" hypothesis was proposed by
A. Beadle and Tatum.
B. Watson and Crick.
C. Garrod.
D. Franklin.
E. Griffith.
Answer: A
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At myelinated areas of the axon (i.e. between nodes of Ranvier), which of the following statements is true?
A. There is an increased number of voltage-gated sodium channels. B. There is increased resistance across the membrane. C. There is increased capacitance across the membrane. D. There is increased transport of potassium across the membrane.
During digestion
a. carbohydrates are split into proteins. b. proteins are broken down into fatty acids. c. fatty acids are split into non-fatty acids. d. carbohydrates, proteins, lipids, and nucleic acids are split into smaller chemical subunits. e. carbohydrates, proteins, lipids, and nucleic acids are split into larger chemical subunits.
Common signs of acute radiation illness include all of the following, EXCEPT:
A) nausea. B) hair loss. C) vomiting. D) diarrhea.
Crossing over occurs during which stage of meiosis?
A) telophase I B) metaphase II C) prophase I D) anaphase II E) prophase II