Fruit and leaf drop at early stages can be prevented by the application of
A) auxins B) ethylene C) cytokinins D) gibberellic acid Answer:A) auxins Explanation: Auxins is a plant hormone that is generally... View Article
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End product of glycolysis is
A) pyruvic acid B) acetyl CoA C) fructose 1-phosphate D) glucose 1-phosphate Answer: A) pyruvic acid Explanation: The end product of... View Article
Respiratory quotient (RQ) is the ratio of
A) CO2 produced to O2 consumed B) CO2 produced to substrate consumed C) oxygen consumed to CO2 produced D) oxygen... View Article
EMP can produce a total of
A) 8 ATP B) 6 ATP C) 38 ATP D) 24 ATP Answer: A) 8 ATP Explanation: EMP (Embden, Meyerhof and... View Article
Terminal cytochrome of respiratory chain which donates electrons to oxygen is
A) Cyt c B) Cyt b C) Cyt a3 D) Cyt a1 Answer: C) Cyt a3 Explanation: Cytochrome a3, which is... View Article
Out of 36 ATP molecules produced per glucose molecule during respiration
A) 2 are produced outside mitochondria and 34 inside mitochondria B) 2 are produced outside glycolysis and 34 during respiratory... View Article
End products of aerobic respiration are
A) water and energy B) sugar and oxygen C) carbon dioxide and energy D) carbon dioxide, water and energy Answer:D)... View Article
Out of 38 ATP molecules produced per glucose, 32 ATP molecules are formed from NADH/ FADH2 in
A) Krebs Cycle B) respiratory chain C) oxidative decarboxylation D) EMP Answer: B) respiratory chain Explanation: Most of the ATP molecules... View Article
The first phase in the breakdown of glucose, in animal cell, is
A) Krebs Cycle B) fermentation C) ETS D) glycolysis Answer: D) glycolysis Explanation: Glycolysis is the first step of cellular respiration... View Article
When yeast ferments glucose, the products obtained are
A) methanol and CO2 B) ethanol and CO2 C) water and CO2 D) ethanol and water Answer: B) ethanol and CO2... View Article
At the end of glycolysis, six carbon compound ultimately changes into
A) acetyl CoA B) ethyl alcohol C) ATP D) pyruvic acid Answer:D) pyruvic acid Explanation: Glycolysis is the first step... View Article
Which of the following products are obtained by anaerobic respiration from yeast?
A) CO2 B) Beer and wine C) Alcohols D) All of these Answer: D) All of these Explanation: The fermentation in... View Article
The correct sequence of electron acceptor in ATP synthesis is
A) c, b, a, a3 B) b, c, a3, a C) b, c, a, a3 D) a, a, b, c Answer:C) Cyt.b,... View Article
The end product of fermentation are
A) CO2 and acetaldehyde B) O2 and C2H5OH C) CO2 and C2H5OH D) CO2 and O2 Answer: C) CO2 and C2H5OH... View Article
In Krebs’ cycle, the FAD participates as electron acceptor during the conversion of
A) succinic acid to fumaric acid B) fumaric acid to malic acid C) ⍺-ketoglutarate to succinyl CoA D) succinyl CoA... View Article
Which of the following is the key intermediate compound linking glycolysis to the Krebs’ cycle?
A) Acetyl CoA B) Malic acid C) ATP D) NADH Answer:A) Acetyl CoA Explanation: Acetyl CoA is the key intermediate,... View Article
Cytochrome is
A) Fe containing porphyrin pigment B) metallo flavoproteins C) lipid D) glycoprotein Answer:A) Fe containing porphyrin pigment Explanation: Cytochrome is... View Article
In which one of the following do the two names refer to one and the same thing ?
A) Tricarboxylic acid cycle and citric acid cycle B) Krebs’ cycle and Calvin cycle C) Tricarboxylic acid cycle and urea... View Article
In glycolysis, during oxidation electrons are removed by
A) glyceraldehyde 3-phosphate B) NAD+ C) molecular oxygen D) ATP Answer:B) NAD+ Explanation: In glycolysis, during oxidation of glyceraldehyde 3-phosphate... View Article
During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP?
A) Krebs’ cycle B) Glycolysis C) Electron transport chain D) Conversion of pyruvic acid to acetyl CoA Answer:C) Electron transport... View Article
