Which of the following is not an energy source for muscle contraction?
A. fatty acids
B. glycogen
C. triglycerides
D. starch
E. glucose
Answer: D
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This molecule combines with CO2 to form the 3-carbon substance, 3-phosphoglycerate.
A. glyceraldehyde-3-phosphate (G3P) B. glucose C. ribulose biphoshpate (RuBP) D. glycerol E. nicotinamide adenine dinucleotide phosphate (NADPH)
Which of the following stimuli will NOT activate a nociceptor?
A. extremes in temperature B. very intense mechanical stimulation C. specific chemicals in the extracellular fluid D. chemicals released by injured cells E. external odorant molecules
Define positive feedback and describe why they are not necessarily beneficial to organisms. Include a
description of the changes associated with severe blood loss and circulatory shock to substantiate your answer. What will be an ideal response?
Which component of a DNA nucleotide could be removed without breaking the polynucleotide chain?
A) Phosphate B) Nitrogen base C) Deoxyribose D) Ribose