Which of the following is considered a required enzyme for the process of transcription?
A. DNA polymerase
B. Aminoacyl-tRNA synthetase
C. RNA polymerase
D. Amine transferase
Answer: C
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Which of the following movements would you associate with chewing food?
A) elevation B) abduction C) flexion D) pronation E) circumduction
Two chambers containing aqueous solutions are separated by a membrane. Chamber 1 contains 10 mM Na+ while chamber 2 contains 1 mM Na+. The membrane potential (1 relative to 2) in this scenario
a. is greater than 0 mV. b. is equal to 0 mV. c. is less than 0 mV. d. cannot be determined based on the information given.
In the body, a joint serves as a(n) ________ for a long bone.
A. lever B. resistor C. effort arm D. fulcrum
The region known as the primitive streak is the site of
A) migration of mesodermal cells to form the endoderm. B) endoderm formation. C) ectoderm formation. D) migration of ectodermal cells to form the mesoderm. E) amnion formation.