CBSE Class 11 (Science) Respiration in Plants — practice questions
72 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) Respiration in Plants in the app →The end product of glycolysis isNet ATP yield per glucose from glycolysis alone isAlcoholic fermentation produces, besides ethanol,The final electron acceptor in aerobic respiration isThe total ATP yield per glucose by aerobic respiration is approximatelyThe Krebs cycle takes place in thePlants carry out respiration inCompared with anaerobic respiration, aerobic respiration yieldsThe overall reaction of aerobic respiration isGlycolysis takes place inThe net energy yield of glycolysis per glucose isIn plant cells under low-oxygen conditions, pyruvate is typically converted intoThe Krebs cycle takes place inPer turn of the Krebs cycle, acetyl-CoA combines with which molecule first?How many CO₂ molecules are released per glucose by the link reaction plus Krebs cycle?In the electron-transport chain of aerobic respiration, the final electron acceptor isThe textbook total ATP yield per glucose under aerobic conditions is approximatelyThe respiratory quotient (RQ) of a fat-rich seed during germination is closest toWhich openings let woody stems exchange gases with air?Why can plants manage without specialised respiratory organs?In which part of the cell does glycolysis occur?Glycolysis is also known by which name?One glucose molecule yields how many pyruvic acid molecules in glycolysis?Which enzyme converts sucrose into glucose and fructose before glycolysis?Which enzyme phosphorylates glucose to glucose-6-phosphate?How many 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 DHAP and which triose phosphate?Which glycolytic conversion forms NADH + H+ from NAD+?The fate of pyruvate in a cell depends mainly on what?What are the end products of alcoholic fermentation by yeast?Which enzyme reduces pyruvic acid to lactic acid in muscles during hard exercise?Which molecule is reoxidised to NAD+ during fermentation?What fraction of glucose energy is released in fermentation?Yeast poisons itself when alcohol reaches roughly what concentration?Where does aerobic respiration of pyruvate take place in eukaryotes?Complete oxidation of pyruvate leaves how many CO2 molecules per pyruvate?Which stage of aerobic respiration occurs on the inner mitochondrial membrane?Which complex converts pyruvate to acetyl CoA?Two pyruvate molecules from one glucose give how many NADH in pyruvate oxidation?Who first elucidated the tricarboxylic acid cycle?The TCA cycle begins when acetyl CoA condenses with which compound?Which enzyme catalyses formation of citric acid in the TCA cycle?How many points in one turn of the TCA cycle reduce NAD+ to NADH?Which carrier is reduced to FADH2 in the TCA cycle?Continued TCA oxidation requires continued replenishment of which compound?Where is the electron transport system located?Which complex oxidises NADH in the electron transport chain?Which complex receives electrons from FADH2 via succinate oxidation?Which mobile protein shuttles electrons between complex III and IV?Complex IV of the respiratory chain is known as what?Which complex of the chain is ATP synthase?How many ATP are made from oxidising one NADH in the ETS, as stated for this syllabus?How many ATP come from oxidising one FADH2 in the ETS?What is the role of oxygen in aerobic respiration?Which two components make up ATP synthase?In ATP synthase, which component forms the proton channel?What is the net ATP gain in fermentation per glucose degraded to pyruvic acid?How does fermentation differ from aerobic respiration?Fats must first be broken into glycerol and what before respiration?Fatty acids enter the respiratory pathway after degradation to what?Glycerol enters the respiratory pathway after conversion to which compound?Which enzymes degrade proteins before their amino acids are respired?Why is the respiratory pathway termed amphibolic?Respiratory quotient is the ratio of what?What is the RQ when carbohydrates are completely oxidised?The RQ of tripalmitin used as a respiratory substrate is about what?When proteins are respired, the RQ is roughly what?Glycolysis literally means what, from its Greek roots?Per glucose, the Krebs cycle (two turns) yields how many NADH?Where does the Krebs cycle operate within mitochondria?Which organisms carry out fermentation under anaerobic conditions?