Which statement is true about cells?
A) Different types of cells that perform different functions in the body contain different genes.
B) Differentiation increases the different functions that a cell can perform.
C) All of a cell's genes are always available for transcription.
D) As genes are turned off within a cell, that cell and its daughter cells become more specialized.
E) The proteins that can be produced by a cell are determined at fertilization and do not change over time.
D) As genes are turned off within a cell, that cell and its daughter cells become more specialized.
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Which are possible functions of skeletal muscles?
a: Maintenance of posture b: Both highly coordinated and localized simple movements c: Temperature regulation d: Support of certain body organs e: Regulation of the movement of material through certain body tracts A. a, b, e B. a, b, c C. a, b, c, e D. a, b, c, d E. a, b, c, d, e
The external portion of the ear which can be viewed is referred to as the ________.
A. auricle B. ear drum C. channel D. auditory tube
When bicarbonate levels fall due to an accumulation of fixed acids in the body, the result is
A. metabolic alkalosis. B. respiratory alkalosis. C. respiratory acidosis. D. metabolic acidosis. E. insufficient respiration.
Blood flow to skeletal muscle would be ________ in response to muscarinic antagonists.
A. increased B. not changed C. decreased