MHT-CET Respiration in Plants — practice questions
64 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice MHT-CET Respiration in Plants in the app →In which part of the cell does glycolysis take place?The EMP pathway of glycolysis is named after which scientists?Partial oxidation of one glucose molecule in glycolysis forms how many molecules of pyruvic acid?Which enzyme converts sucrose into glucose and fructose before they enter glycolysis?How many enzyme-controlled reactions make up the glycolytic chain from glucose to pyruvate?At how many steps of glycolysis is ATP consumed?Fructose 1,6-bisphosphate splits into which pair?NADH forms in glycolysis when PGAL is converted into what?Which of these is NOT a major fate of pyruvic acid formed in glycolysis?Yeast converts pyruvic acid under anaerobic conditions into which products?Which enzyme pair catalyses alcoholic fermentation?Which enzyme makes lactic acid in oxygen-starved muscle?What fraction of the energy in glucose is released in fermentation?Yeast cells die from self-poisoning when alcohol concentration reaches about what level?Where in a eukaryotic cell does the Krebs cycle take place?The electron transport system of a plant cell is located in which structure?Which coenzyme, besides NAD+, takes part in oxidative decarboxylation of pyruvate?Oxidative decarboxylation of pyruvic acid yields what?The tricarboxylic acid cycle is also called the Krebs cycle after which scientist?The TCA cycle begins when acetyl CoA condenses with which four-carbon compound?Which enzyme catalyses the condensation of acetyl CoA with oxaloacetic acid?Conversion of succinyl-CoA to succinic acid directly forms which high-energy compound?At how many points in one turn of the TCA cycle is NAD+ reduced to NADH + H+?The continued working of the TCA cycle requires continued replenishment of which compound?Electrons from NADH in the mitochondrial matrix are first oxidised by which complex?FADH2 from succinate oxidation passes electrons to ubiquinone through which complex?Which small protein carries electrons between complex III and complex IV?Complex IV of the electron transport chain is known as which enzyme complex?Which complex of the respiratory chain makes ATP from ADP and inorganic phosphate?According to the NCERT balance sheet, oxidation of one NADH in the electron transport chain gives how many ATPIn the classic calculation, oxidation of one FADH2 produces how many ATP molecules?What is the final hydrogen acceptor in aerobic respiration?Why is ATP formation in the ETS called oxidative phosphorylation?In ATP synthase, which component contains the site for synthesis of ATP?Which part of ATP synthase forms the channel through which protons cross the inner membrane?How many protons pass through F0 for each ATP produced, as stated in NCERT?What is the theoretical net gain of ATP from aerobic respiration of one glucose molecule in the NCERT balance Which assumption underlies the respiratory balance sheet?How does ATP gain in fermentation compare with aerobic respiration?The respiratory pathway is considered amphibolic because it involves what?Fatty acids are first degraded to which compound for respiration?Glycerol from fat breakdown enters the respiratory pathway after being converted to what?Which enzymes first degrade proteins before their amino acids enter the respiratory pathway?What is the respiratory quotient (RQ)?What is the RQ when carbohydrates are completely oxidised?When fats are the respiratory substrate, the RQ is what?The RQ when proteins are used as respiratory substrates is about what value?Oxidation of tripalmitin releases 102 CO2 using 145 O2. What is its approximate RQ?Through which structures do plants exchange gases for respiration?Why can plants manage without respiratory organs?Complete combustion of glucose releases most of its energy in which form?In woody stems, openings that allow gaseous exchange are called what?What does the term glycolysis mean, from its Greek roots?In anaerobic organisms, which process makes up all of respiration?Complete oxidation of pyruvate in mitochondria leaves how many molecules of CO2?Fermentation in plants occurs in which of these?Which of these terminal electron acceptors is used in anaerobic respiration by some bacteria and archaea?Plant respiration accounts for about what share of CO2 generated yearly by terrestrial ecosystems?One turn of the citric acid cycle yields which hydrogen carriers?Newer estimates of ATP yield from one glucose in aerobic respiration are about how many?In eukaryotes, oxidative phosphorylation occurs in which location?How many ATP molecules per glucose are actually produced in glycolysis, before subtracting those used?Which enzyme phosphorylates fructose 6-phosphate into fructose 1,6-bisphosphate?In fermentation, pyruvate stays in which cell location?