Metabolic intermediates use ________ bonds to transfer energy to the high-energy bonds of ATP, NADH, FADH2 or NADPH.
Fill in the blank(s) with the appropriate word(s).
covalent
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The “lock and key” model is use to describe the functioning of:
a. enzymes b. collagen molecules c. keratin molecules d. both A and B above
Put these phases of the cardiac cycle in the correct order.
1. opening of the semilunar valves 2. isovolumic contraction 3. beginning of atrial systole 4. closure of the AV valves 5. completion of ventricular filling 6. beginning of ventricular systole 7. ventricular relaxation 8. ventricular ejection A) 3, 5, 6, 4, 2, 1, 8, 7 B) 3, 2, 6, 1, 4, 5, 8, 7 C) 3, 2, 6, 4, 5, 8, 7, 1 D) 4, 5, 1, 2, 7, 8, 3, 6 E) 3, 5, 6, 1, 8, 4, 2, 7
How many different species of bacteria reside in the colon?
a. 1-5 b. 10-50 c. 100-500 d. 500-1000 e. over 1000
Parasympathetic preganglionic axons from the sacral region of the spinal cord course through ____ nerves that innervate the ____
A. splanchnic; urinary bladder and adrenal glands B. pelvic; lower colon and reproductive glands C. sacral; lower colon and urinary bladder D. lumbar; stomach and intestines E. coccygeal; anus and vagina