Question

6:35 PM Fri Apr 19 16% 242:37:15 Exit 24. In a coupled reaction that requires electrons, NADH may be oxidized to what? NADH2 NAD+ NADPH NADP 25 The high energy bond formed from the reaction between CoA and a two carbon donor is called sulfhydryl phosphodiester thioester secondary amide Submit 6:35 PM Fri Apr 19 令16% Exit 242:36:58 Б18. There are 10 reactions in glycolysis. How many reactions does it take to make glucose in gluconeogenesis? 10 12 19. Pyruvate is a? phosphodiester ketone and carboxylic acid (alpha keto acid) alcohol and phenyl ketone and ether 6:35 PM Fri Apr 19 16% Exit 242:37:03 20. What important molecule is pyruvate converted into in order to be used for the citric acid cycle? Coenzyme A acetyl CoA glucagon epinephrine 21. · CoA is a cofactor for 4% of the enzymes in the body, what important process does Co-enzyme A help enzymes accomplish? Acetylation and de-acetylation of substrates Transfer two carbons from pyruvate to the Citric acid cycle Donate two carbons to carnitine to move 2 carbon units to mitochondrial matrix all of the above 22. Importantly, the endoplasmic reticulum is known for production of proteins. What other major class of biomolecules is a critical 6:35 PM Fri Apr 19 16% Exit 242:37:09 22. Importantly, the endoplasmic reticulum is known for production of proteins. What other major class of biomolecules is a critical function of the E.R.? Lipids Amylose Amylopectin Glycogen 23 If the overall value for the coupled reaction of ATP hydrolysis and phosphorylation of Glucose is -10 kJ/mol, but the value for the phosphorylation reaction is +20kJ/mol, what must the min/max value be at for the hydrolysis of ATP to ADP to make the reaction go forward? -10 kJ/mol -20 kJ/mol -30 kJ/mol -40 kJ/mol

Answer 1

24) Oxidation involves release of electrons. During coupled oxidation reduction reaction, NADH, becomes NAD⁺ by releasing two electrons.

NADH $\rightarrow$ NAD⁺ + H⁺ + 2e^-