Cellular Respiration and Enzymes

Isoenzymes (or isozymes) are multiple forms of an enzyme that catalyze the same chemical reaction but are encoded by different genes and may have different kinetic properties, such as different Vmax or Km values. However, because they catalyze the exact same chemical reaction, they share the same equilibrium constant for that reaction.

Statement (c) is incorrect because Succinyl CoA is converted to succinic acid by succinyl CoA synthetase (or succinic thiokinase), not succinic dehydrogenase. Succinic dehydrogenase converts succinic acid to fumarate. Statements (a) and (b) are correct: pyruvate is oxidized to acetyl CoA in aerobic conditions and reduced in anaerobic conditions (fermentation).

During oxidative phosphorylation, NADH generates approximately 3 ATP molecules through the electron transport chain ( complexes I, III, and IV), while FADH2 generates only 2 ATP molecules because it enters the chain at complex II, bypassing complex I and thus contributing less proton motive force. The total yield per glucose is approximately 36-38 ATP.

Aerobic respiration of glucose produces 6 CO2 and 6 H2O molecules, releasing approximately 2900 KJ/mol energy. Option A has the correct stoichiometry and energy value. Options B and D incorrectly produce CO (incomplete oxidation). Option C has correct products but wrong energy value.

This is the correct answer as all statements are correct.

CAZy is a database of Carbohydrate-Active enzymes, which contains classification and associated information about enyzmes involved in the synthesis, metabolism and transport of carbohydrates.

Cadaverine is a foul-smelling compound produced by protein hydrolysis during putrefaction of animal tissue. Cadaverine is a toxic diamine with the formula NH₂(CH₂)₅NH₂, which is similar to putrescine.

Concurrent tandem catalysis (CTC) is a technique in chemistry which uses multiple catalysts on a single molecule in a one-pot vessel to produce a product otherwise not accessible by a single catalyst.

Isomerases just rearrange the existing atoms of a molecule, that is, create isomers of the starting material.

This is the correct answer. 

Pantothenic acid, is a water-soluble vitamin. For many animals, pantothenic acid is an essential nutrient. Animals require pantothenic acid to synthesize coenzyme-A (CoA), as well as to synthesize and metabolize proteins, carbohydrates, and fats.

Cellular respiration is the metabolic process where cells break down glucose in the presence of oxygen to produce ATP, releasing carbon dioxide and water as waste products. This occurs through glycolysis, the Krebs cycle, and oxidative phosphorylation. Transpiration is water loss through leaves, decomposition is breakdown by decomposers, and fossilization is preservation of remains.

Louis Pasteur introduced the terms aerobic and anaerobic in describing the growth of yeast at the expense of sugar in the presence or absence of oxygen. He observed that more alcohol was produced in the absence of oxygen when sugar is fermented, which is now termed the Pasteur effect.

This option is correct,  because glycolysis is an anaerobic process and involves the degradation of one molecule of glucose into two molecules of pyruvic acid,  with generation of two molecules of ATP.

This statement is wrong because presence of antigens in the blood is necessary for the production of antibodies. Thus, this option is correct.