A tuberculosis antibiotic, discovered in the 1950s, prevents the reduction of NAD+ in the bacteria causing the infection. Determine the effect of this medication on ATP production during glycolysis
What will be an ideal response?
No ATP would be generated in glycolysis if NAD+ cannot be reduced when this antibiotic is present. NAD+, an electron carrier, is the first to accept electrons from nutrients during catabolism. During glucose catabolism, the monosaccharide glucose is broken down and the chemical energy in its bonds is used to drive ATP synthesis. Glycolysis is one of the two main parts of glucose catabolism. During glycolysis, two molecules of NADH are synthesized and glucose is split into two three-carbon pyruvate molecules. As pyruvate is reduced, NADH is oxidized to NAD+. This reaction is critical because it regenerates NAD+, which is needed to oxidize glyceraldehyde-3-phosphate to 1, 3-bisphosphoglycerate in the energy payoff phase. Without this NAD+, no ATP would be generated in glycolysis at all.
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hydronium ammonia phosphate bicarbonate
Which of the following structures houses the spiral organ?
A. Cochlea B. Vestibule C. Semicircular duct D. Stapes E. Tympanic cavity
The only function of chewing is to break food up into smaller pieces and soften it by mixing it with saliva to facilitate swallowing
Indicate whether the statement is true or false
Which of the following statements regarding blood capillaries and lymphatic capillaries is not true?
A. Both lymphatic and blood capillaries reabsorb fluid from tissue spaces. B. Lymphatic capillaries are closed at one end, unlike blood capillaries. C. Bacteria and lymphocytes may move into lymphatic capillaries through gaps between cells. D. Both lymphatic and blood capillaries are lined with endothelium. E. Endothelial cells of both blood and lymphatic capillaries are joined by tight junctions.