Which of the following is true?
A) Much of the genome does not encode proteins.
B) An amino acid encodes a gene.
C) The genome consists of entirely protein-encoding genes.
D) DNA has five types of nucleotide bases.
A
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Loss of descending inhibitory inputs on motor neurons may result in ____
a. spastic paralysis b. flaccid paralysis c. tetanus d. clumsy movement e. cerebral palsy
Most of the circulating antibodies are derived from _____ class immunoglobulin.
A) A B) E C) G D) D
The muscle that inserts on the acromion and scapular spine is the
A) serratus anterior. B) trapezius. C) sternocleidomastoid. D) pectoralis minor. E) levator scapulae.
Most of the reabsorption of filtered calcium is unregulated and occurs in the ________, but an additional amount can be reabsorbed in the _________, depending on the plasma concentration of parathyroid hormone
A. proximal convoluted tubule, distal convoluted tubule B. distal convoluted tubule, proximal convoluted tubule C. proximal convoluted tubule, descending loop of Henle D. distal convoluted tubule, medullary collecting ducts E. distal convoluted tubule, renal corpuscle