- Which one of the following is a key second messenger?
a. Adenyl cyclase
b. Glucokinase
c. Aldolase
d. None - Glycolysis takes place in
a. Mitochondria matrix
b. Mitochondrial membranes
c. Cytosol
d. F-1 Particles - Which one about glycolysis is true?
a. Occurs only in aerobic respiration
b. Occurs only in anaerobic respiration
c. Occurs only in eukaryotes
d. Occurs in both aerobic and anaerobic organisms - Anaerobic respiration yields about __ energy compared with aerobic respiration.
a. 2 %
b. 10 %
c. 20 %
d. 50 % - A high level of aldolase in the blood indicates that;
a. Liver damage
b. Muscle damage
c. Cirrhosis
d. All - How many carboxylic groups citrate have?
a. 1
b. 2
c. 3
d. None - How may carbons be present in alpha-ketoglutarate?
a. 3
b. 4
c. 5
d. 6 - Fructose-6-phosphate is converted into fructose-1, 6- Bisphosphate by the enzyme?
a. Phosphofructokinase
b. Phosphofructoisomerase
c. Phosphofructoaldolase
d. None of the above - Removal of water from the phosphoglycerate and formation of phosphoenolpyruvate is catalyzed by __?
a. Isomerase
b. Mutase
c. Enolase
d. Cyclase - Which one of the following is not an enzyme of glycolysis?
a. Pyruvate dehydrogenase complex
b. Pyruvate kinase
c. Phsophofructosekinase-2
d. Fructose 2,6-bisphosphatase - Who discovered the glycolysis sequence first?
a. Gustave Embden
b. Otto Meyerhof
c. Jakub Karol Parnas
d. All - How many metabolic routes used by pyruvate for its further oxidation?
a. 1
b. 2
c. 3
d. Final end product of cellular respiration - Which type of cell produces lactate under aerobic conditions?
a. Erythrocytes
b. Retina
c. Both
d. Not produced in any aerobic condition - Site of Krebs cycle?
a. Cytosol
b. Outer membrane
c. Inner membrane
d. Mitochondrial matrix - Krebs cycle does not occur in?
a. Prokaryotes
b. Plant cells
c. Stem cells
d. All of the above - Not true in the case of the Krebs cycle?
a. Extract all energy of pyruvate
b. Only characteristics of aerobic respiration
c. Anaerobes also perform Krebs cycle
d. Results in water and carbon dioxide - Pyruvate to glucose formation is named as?
a. Glycogenolysis
b. Glycolysis
c. Gluconeogenesis
d. Glycogenesis - Which one does not result during the catalysis of pyruvate dehydrogenase complex?
a. Release of CO2
b. Formation of ATP
c. Formation of NADH
d. Removal of CoA-SH - The first step of the Krebs cycle is?
a. Condensation
b. Hydration
c. Dehydration
d. Dehydrogenation - The enzyme involved in the catalysis of the first step of the Krebs cycle is?
a. Citrate synthetase
b. Citrate hydrase
c. Citrate isomerase
d. Citrate oxidase - Which one of the following is not present in the mitochondrial matrix?
a. TCA Cycle enzymes
b. Fatty acid oxidation enzymes
c. MTDNA & MTRNA
d. ATP Synthetase - Which one is incorrect about the respiratory chain?
a. An electron transport system
b. Located inner mitochondrial membrane
c. Final pathways of pyruvate metabolism
d. Uses a small amount of oxygen - Which component of the ETC is present in the mitochondrial matrix?
a. Coenzymes
b. Cytochrome
c. Complex V
d. All are present in the IMM - The FADH2 have a P:O Ratio?
a. 1:2
b. 2:1
c. 1:3
d. 3:1 - Which one is correct about ATP synthetase?
a. It is complex IV
b. F0 is membrane-spanning domain
c. F1 is excluded from domain
d. All are correct
Note: One thing to keep in mind is that if you want to get some benefit, you have to solve the Quiz first, and then you have to look at the key given below.
Answer Keys – 4 Stage – PPSC Biology – Quiz 4 – Bioenergetics