What energy source was used by Stanley Miller in his 1953 experiment to replicate the Earth's early environment?
A. ultraviolet radiation
B. sunlight
C. gamma radiation
D. heat
E. electric spark
Answer: E
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What is the maximum number of electrons in the first energy shell of an atom?
A. 8 B. 32 C. 4 D. 2 E. 18
Hemophilia results from a deficiency in
A. platelets, and results in normal bleeding. B. fibrin, and results in abnormal bleeding. C. plasma, and results in abnormal bleeding. D. collagen, and results in normal bleeding. E. clotting factor VIII, and results in abnormal bleeding.
Four of the five answers listed below are
related by a common quality. Select the EXCEPTION.
a. urethra b. testis c. ejaculatory duct d. vas deferens e. epididymis
Which of the following hormones is NOT
produced by either lobe of the pituitary gland?
a. prolactin b. oxytocin c. calcitonin d. ACTH e. GH