In lactic acid fermentation, which substance is reduced and which is oxidized?Select one:A.Lactate is reduced and NAD+ is oxidized.B.Pyruvate is reduced and NADH is oxidized.C.Lactate is reduced and pyruvate is oxidized.D.NADH is reduced and pyruvate is oxidized.E.Lactate is oxidized and NADH is reduced.

Which of the following accurately describes a key aspect of lactic acid fermentation?Question 4Answera.Lactic acid fermentation converts pyruvate to ethanol and CO₂.b.Lactic acid fermentation produces a net gain of 4 ATP molecules per glucose molecule.c.Lactic acid fermentation occurs in the mitochondria.d.Lactic acid fermentation regenerates NAD+ for glycolysis.

. In the equation below what is being oxidized and what is being reduced?a. ATP is being oxidized and glucose 6-phosphate is being reduced.b. Glucose is being oxidized and ADP is being reduced.c. ATP is being oxidized and glucose is being reduced.d. Glucose is being oxidized and ATP is being reduced.e. ADP is being oxidized and glucose 6-phosphate is being reduced

Following intense exercise lactate forms if there is little to no oxygen present. Which statement is TRUE?Select one alternative:Lactate dehydrogenase (LDH) oxidises pyruvate and reduces NADH + H+ to NAD+. At rest the lactate is cleared by the Cori Cycle.Pyruvate dehydrogenase (PDH) reduces pyruvate and oxidises NADH + H+ to NAD+. At rest the lactate is cleared by the Citric Acid Cycle.Lactate dehydrogenase (LDH) oxidises pyruvate and reduces NADH + H+ to NAD+. At rest the lactate is cleared by the Urea Cycle.Lactate dehydrogenase (LDH) reduces pyruvate and oxidises NADH + H+ to NAD+. At rest the lactate is cleared by the Cori Cycle.

Identify the substances that are oxidised and the substances which are reduced in the following reactions.(i) 4Na(s) + O2(g) → 2Na2O(s)(ii) CuO (s) + H2(g) → Cu (s) + H2O(l)Answer:(i) Substances oxidised is Na as it gains oxygen and oxygen is reduced.(ii) Substances reduced is Cu as hydrogen is oxidised as it gains oxygen.

How are glycolysis, ethanol fermentation, and lactate fermentation all related?Question 2Select one:a.All can proceed in the absence of oxygenb.All require pyruvatec.All three produce NADHd.All three produce carbon dioxide