Enzymes which remove hydrogen atoms from their substrates are referred to as ________.
A. dehydrogenases
B. hydrolases
C. peroxidases
D. catalases
Answer: A
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Selective attention is facilitated, enhanced, and improved by way of the ________ of the brainstem, which acts as the origin point of neurons, which project to the cerebral cortex and release ________ neurotransmitter(s).
A. pons, acetylcholine B. locus ceruleus, norepinephrine C. basal nuclei, dopamine D. hypothalamus, serotonin E. thalamus, melatonin
You are dissecting a kidney in class and, after cutting a sagittal section through the kidney, decide to remove some of the lighter-colored inner structures near the superior end of the ureter. You remove a funnel-shaped sac that connects directly into the ureter, along with many tubes that converge to form the funnel-shaped sac. Which structures have you removed?
A. The adrenal glands B. The renal cortex and the renal medulla C. The renal medulla and renal pyramids D. The renal pelvis and the calyces
Positive feedback mechanisms tend to enhance the original stimulus so that the response is accelerated
Indicate whether this statement is true or false?
Which of the following is NOT one of the body's physiological chemical buffering systems?
A) bicarbonate B) hydrochloride C) phosphate D) Hydrochloride, bicarbonate and phosphate are all buffering systems