The enzyme ________ is required for the synthesis of mRNA

A) DNA polymerase
B) RNA polymerase
C) DNA isomerase
D) RNA isomerase
E) RNA synthase


Answer: B

Anatomy & Physiology

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Which of the following would decrease heart rate?

A) increased sympathetic stimulation of SA node B) decreased parasympathetic stimulation of nodal fibers C) increased levels of norepinephrine and/or epinephrine D) faster depolarization of the pacemaker potential E) increased parasympathetic stimulation of nodal fibers.

Anatomy & Physiology

The tensor tympanl muscle is a skeletal muscle in the middle ear controlled by a branch of the trigeminal nerve. This muscle acts to prevent damage from loud sounds. Which branch of the trigeminal muscle would be responsible?

a. opthalmic b. maxillary c. mandibular d. temporal

Anatomy & Physiology

Evaporation of sweat cooling the body is an example of

a. negative feedback b. positive feedback c. a feedforward mechanism d. an intrinsic (local) control mechanism e. autoregulation

Anatomy & Physiology

In general, muscles on the anterior surface of the arm are ________, and muscles on the anterior surface of the leg are ________.

A. extensors; extensors B. extensors; flexors C. flexors; extensors D. flexors; flexors

Anatomy & Physiology