Adenine and guanine are ________ and cytosine and thymine are ________.
What will be an ideal response?
purines; pyrimidines
purines, pyrimidines
purines pyrimidines
purines/pyrimidines
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Two notable exceptions to the overall neutral environment in the human body are the stomach and the
A) testis. B) ovaries. C) vagina. D) prostate gland. E) uterus.
Which structure lies posterior to the bladder and anterior to the rectum and secretes an alkaline, fructose filled fluid?
a) Prostate b) bulbourethral gland c) Seminal vesicles d) Spongy urethra e) Prostatic urethra
What kind of receptor responds to acetylcholine released by all autonomic preganglionic fibers?
a. muscarinic cholinergic receptors b. ?1 adrenergic receptors c. ?2 adrenergic receptors d. ?1 adrenergic receptors e. nicotinic cholinergic receptors
What are the two attachments of skeletal muscles?
What will be an ideal response?