Copper is associated with _____ mitochondria' enzymes. (1) Cytochrome oxidase (2) Succinic dehydrogenase (3) Catalase (4) Acid phosphatase

Copper is associated with _____ mitochondria' enzymes. (1) Cytochrome oxidase (2) Succinic dehydrogenase (3) Catalase (4) Acid phosphatase
by

1 Answer

Answer :

(1) Cytochrome oxidase Explanation: Copper is involved in normalized function of many enzymes, such as cytochrome oxidase, which is complex IV in mitochondrial electron transport chain, ceruloplasmin, Cu/Zn superoxide dismutase, and in amine oxidases. These enzymes catalyze reactions for oxidative phosphorylation, iron transportation, antioxidant and free radical scavenging and neutralization, and neurotransmitter synthesis, respectively.
by
selected

Related questions

Copper is associated with ____ mitochondrial enzymes. (1) Cytochrome oxidase (2) Succinic dehydrogenase (3) Catalase (4) Acid phosphatase

Description : Copper is associated with ____ mitochondrial enzymes. (1) Cytochrome oxidase (2) Succinic dehydrogenase (3) Catalase (4) Acid phosphatase

Last Answer : Cytochrome oxidase

An example of competitive inhibition of an enzyme is the inhibition of a. Succinic dehydrogenase by malonic acid b. Cytochrome oxidase by cyanide c. Hexokinase by glucose-6-phosphate d. Carbonic anhydrase by carbon dioxide

Description : An example of competitive inhibition of an enzyme is the inhibition of a. Succinic dehydrogenase by malonic acid b. Cytochrome oxidase by cyanide c. Hexokinase by glucose-6-phosphate d. Carbonic anhydrase by carbon dioxide

Last Answer : Ans: A

All of the following are iron-containing enzymes except (A) Carbonic anhydrase (B) Catalase (C) Peroxidase (D) Cytochrome oxidase

Description : All of the following are iron-containing enzymes except (A) Carbonic anhydrase (B) Catalase (C) Peroxidase (D) Cytochrome oxidase

Last Answer : Answer : A

The pentose phosphate pathway protects erythrocytes against hemolysis by assisting the enzyme: (A) Superoxide dismutase (B) Catalase (C) Glutathionic peroxidase (D) Cytochrome oxidase ENZYMES 149

Description : The pentose phosphate pathway protects erythrocytes against hemolysis by assisting the enzyme: (A) Superoxide dismutase (B) Catalase (C) Glutathionic peroxidase (D) Cytochrome oxidase ENZYMES 149

Last Answer : Answer : C

Which of the following is located in the mitochondria? (A) Cytochrome oxidase (B) Succinate dehydrogenase (C) Dihydrolipoyl dehydrogenase (C) All of these

Description : Which of the following is located in the mitochondria? (A) Cytochrome oxidase (B) Succinate dehydrogenase (C) Dihydrolipoyl dehydrogenase (C) All of these

Last Answer : D

Which of the following is located in the mitochondria? (A) Cytochrome oxidase (B) Succinate dehydrogenase (C) Dihydrolipoyl dehydrogenase (D) All of these

Description : Which of the following is located in the mitochondria? (A) Cytochrome oxidase (B) Succinate dehydrogenase (C) Dihydrolipoyl dehydrogenase (D) All of these

Last Answer : (D) All of these

An example of feedback inhibition is (A) Allosteric inhibition of hexokinase by glucose6-phosphate (B) Cyanide action on cytochrome (C) Sulpha drug on folic acid synthesizer bacteria (D) Reaction between succinic dehydrogenase and succinic acid

Description : An example of feedback inhibition is (A) Allosteric inhibition of hexokinase by glucose6-phosphate (B) Cyanide action on cytochrome (C) Sulpha drug on folic acid synthesizer bacteria (D) Reaction between succinic dehydrogenase and succinic acid

Last Answer : Answer : A

The following reaction is characteristic of what type of enzymes? 2H2O2 → 2H2O + O2 (A) Peroxides (B) Catalase (C) Dehydrogenase (D) Copper containing oxidases

Description : The following reaction is characteristic of what type of enzymes? 2H2O2 → 2H2O + O2 (A) Peroxides (B) Catalase (C) Dehydrogenase (D) Copper containing oxidases

Last Answer : Answer : B

The enzyme using some other substance, not oxygen as hydrogen acceptor is (A) Tyrosinase (B) Succinate dehydrogenase (C) Uricase (D) Cytochrome oxidase

Description : The enzyme using some other substance, not oxygen as hydrogen acceptor is (A) Tyrosinase (B) Succinate dehydrogenase (C) Uricase (D) Cytochrome oxidase

Last Answer : Answer : B

An enzyme catalyzing oxidoreduction, using oxygen as hydrogen acceptor is (A) Cytochrome oxidase (B) Lactate dehydrogenase (C) Malate dehydrogenase (D) Succinate dehydrogenase

Description : An enzyme catalyzing oxidoreduction, using oxygen as hydrogen acceptor is (A) Cytochrome oxidase (B) Lactate dehydrogenase (C) Malate dehydrogenase (D) Succinate dehydrogenase

Last Answer : Answer : A

Example of an extracellular enzyme is (A) Lactate dehydrogenase (B) Cytochrome oxidase (C) Pancreatic lipase (D) Hexokinase

Description : Example of an extracellular enzyme is (A) Lactate dehydrogenase (B) Cytochrome oxidase (C) Pancreatic lipase (D) Hexokinase

Last Answer : Answer : C

A mitochondrial marker enzyme is (A) Aldolase (B) Amylase (C) Succinic dehydrogenase (D) Pyruvate dehydrogenase ENZYMES 175

Description : A mitochondrial marker enzyme is (A) Aldolase (B) Amylase (C) Succinic dehydrogenase (D) Pyruvate dehydrogenase ENZYMES 175

Last Answer : Answer : C

The best example of extracellular enzymes (exoenzyme) is (A) Nucleases (B) Digestive enzymes (C) Succinic dehydrogenase (D) None of these

Description : The best example of extracellular enzymes (exoenzyme) is (A) Nucleases (B) Digestive enzymes (C) Succinic dehydrogenase (D) None of these

Last Answer : Answer : C

The enzymes present in the membrane of mitochondria are (A) Flavoproteins and cytochromes (B) Fumarase and lipase (C) Enolase and catalase (D) Hexokinase and zymase

Description : The enzymes present in the membrane of mitochondria are (A) Flavoproteins and cytochromes (B) Fumarase and lipase (C) Enolase and catalase (D) Hexokinase and zymase

Last Answer : Answer : A

The α-ketoacid is decarboxylated by H2O2 forming a carboxylic acid with one carbon atom less in the absence of the enzyme: (A) Catalase (B) Decarboxylase (C) Deaminase (D) Phosphatase

Description : The α-ketoacid is decarboxylated by H2O2 forming a carboxylic acid with one carbon atom less in the absence of the enzyme: (A) Catalase (B) Decarboxylase (C) Deaminase (D) Phosphatase

Last Answer : Answer : A

Which one of the following enzymes requires a coenzyme derived from the vitamin whose structure is shown below? (A) Enoyl CoA hydratase (B) Phosphofructokinase (C) Glucose-6-phosphatase (D) Glucose-6-phosphate dehydrogenase

Description : Which one of the following enzymes requires a coenzyme derived from the vitamin whose structure is shown below? (A) Enoyl CoA hydratase (B) Phosphofructokinase (C) Glucose-6-phosphatase (D) Glucose-6-phosphate dehydrogenase

Last Answer : Answer : D

Cytochrome C oxidase complex contains cyto-a & `a_(3)` and two copper centres.

Description : Cytochrome C oxidase complex contains cyto-a & `a_(3)` and two copper centres.

Last Answer : Cytochrome C oxidase complex contains cyto-a & `a_(3)` and two copper centres.

Cytochrome C oxidase complex contains cyto-a & `a_(3)` and two copper centres.

Description : Cytochrome C oxidase complex contains cyto-a & `a_(3)` and two copper centres.

Last Answer : Cytochrome C oxidase complex contains cyto-a & `a_(3)` and two copper centres.

A copper containing oxidase is (A) Cytochrome oxidase (B) Flavin mononucleotide (C) Flavin adenine dinucleotide (D) Xanthine oxidase

Description : A copper containing oxidase is (A) Cytochrome oxidase (B) Flavin mononucleotide (C) Flavin adenine dinucleotide (D) Xanthine oxidase

Last Answer : Answer : A

Oxaloacetate is converted to aspartic acid by (A) Reductase (B) Oxidase (C) Transminase (D) Catalase

Description : Oxaloacetate is converted to aspartic acid by (A) Reductase (B) Oxidase (C) Transminase (D) Catalase

Last Answer : Answer : C

In which one of the following enzymes, is copper necessarily associated as an activator? (a) Carbonic anhydrase (b) Tryptophanase (c) Lactic dehydrogenase (d) Tyrosinase

Description : In which one of the following enzymes, is copper necessarily associated as an activator? (a) Carbonic anhydrase (b) Tryptophanase (c) Lactic dehydrogenase (d) Tyrosinase

Last Answer : (d) Tyrosinase

Oxidase enzymes responsible for producing H2O2 are present in a. Mitochondria b. Ribosomes c. Peroxisomes d. Polysomes

Description : Oxidase enzymes responsible for producing H2O2 are present in a. Mitochondria b. Ribosomes c. Peroxisomes d. Polysomes

Last Answer : Peroxisomes

ELISA is used to detect viruses where the key reagent is (a) alkaline phosphatase (b) catalase (c) DNA probe (d) RNase.

Description : ELISA is used to detect viruses where the key reagent is (a) alkaline phosphatase (b) catalase (c) DNA probe (d) RNase.

Last Answer : (a) alkaline phosphatase

The iron containing nonporphyrin is (A) Hemosiderin (B) Catalase (C) Cytochrome C (D) Peroxidase

Description : The iron containing nonporphyrin is (A) Hemosiderin (B) Catalase (C) Cytochrome C (D) Peroxidase

Last Answer : Answer : A

An enzyme which uses hydrogen acceptor as substrate is (A) Xanthine oxidase (B) Aldehyde oxidase (C) Catalase (D) Tryptophan oxygenase

Description : An enzyme which uses hydrogen acceptor as substrate is (A) Xanthine oxidase (B) Aldehyde oxidase (C) Catalase (D) Tryptophan oxygenase

Last Answer : Answer : C

Albinism is a congenital disorder resulting from the lack of which enzyme? (a) Tyrosinase (b) Xanthine oxidase (c) Catalase (d) Fructokinase

Description : Albinism is a congenital disorder resulting from the lack of which enzyme? (a) Tyrosinase (b) Xanthine oxidase (c) Catalase (d) Fructokinase

Last Answer : (a) Tyrosinase

Which of the following property(ies) is/are seen in the members of family Enterobacteriaceae? A.Theyare catalase-positive B.Theyare oxidase-negative C.They ferment glucose D.They reduce nitrates to nitrites

Description : Which of the following property(ies) is/are seen in the members of family Enterobacteriaceae? A.Theyare catalase-positive B.Theyare oxidase-negative C.They ferment glucose D.They reduce nitrates to nitrites

Last Answer : B.Theyare oxidase-negative

A molybdenum containing oxidase is (A) Cytochrome oxidase (B) Xanthine oxidase (C) Glucose oxidase (D) L-Amino acid oxidase

Description : A molybdenum containing oxidase is (A) Cytochrome oxidase (B) Xanthine oxidase (C) Glucose oxidase (D) L-Amino acid oxidase

Last Answer : Answer : B

The first enzyme found to have isoenzymes was (A) Alkaline Phosphatase (B) Lactate dehydrogenase (C) Acid Phosphatase (D) Creatine kinase

Description : The first enzyme found to have isoenzymes was (A) Alkaline Phosphatase (B) Lactate dehydrogenase (C) Acid Phosphatase (D) Creatine kinase

Last Answer : Answer : B

A competitive inhibitor of succinic dehydrogenase is (a) α-ketoglutarate (b) malate (c) malonate (d) oxaloacetate.

Description : A competitive inhibitor of succinic dehydrogenase is (a) α-ketoglutarate (b) malate (c) malonate (d) oxaloacetate.

Last Answer : (c) malonate

Select the option which is not correct with respect to enzyme action. (a) Substrate binds with enzyme at its active site. (b) Addition of lot of succinate does not reverse the inhibition of succinic dehydrogenase by malonate. (c) A non-competitive inhibitor binds the enzyme at a site distinct from that which binds the substrate. (d) Malonate is a competitive inhibitor of succinic dehydrogenase.

Description : Select the option which is not correct with respect to enzyme action. (a) Substrate binds with enzyme at its active site. (b) Addition of lot of succinate does not reverse the inhibition ... from that which binds the substrate. (d) Malonate is a competitive inhibitor of succinic dehydrogenase.

Last Answer : (b) Addition of lot of succinate does not reverse the inhibition of succinic dehydrogenase by malonate.

Schardinger’s enzyme is (A) Lactate dehydrogenase (B) Xanthine dehydrogenase (C) Uric oxidase (D) L amino acid dehydrogenase

Description : Schardinger’s enzyme is (A) Lactate dehydrogenase (B) Xanthine dehydrogenase (C) Uric oxidase (D) L amino acid dehydrogenase

Last Answer : Answer : B

Albinism is due to deficiency of the enzyme: (A) Phenylalanine hydroxylase (B) Tyrosinase (C) p-Hydroxyphenylpyruvic acid oxidase (D) Tyrosine dehydrogenase

Description : Albinism is due to deficiency of the enzyme: (A) Phenylalanine hydroxylase (B) Tyrosinase (C) p-Hydroxyphenylpyruvic acid oxidase (D) Tyrosine dehydrogenase

Last Answer : Answer : C

Most of the ammonia released from L-αamino acids reflects the coupled action of transaminase and (A) L-glutamate dehydrogenase (B) L-amino acid oxidase (C) Histidase (D) Serine dehydratase

Description : Most of the ammonia released from L-αamino acids reflects the coupled action of transaminase and (A) L-glutamate dehydrogenase (B) L-amino acid oxidase (C) Histidase (D) Serine dehydratase

Last Answer : Answer : A

Which of the following enzymes is ultimately responsible for the production of prostaglandins associated with inflammatory reactions? (a) Phospholipase (b) Lipoxygenase (c) Cyclooxygenase-I (d) Cyclooxygenase II (e) Xanthine oxidase

Description : Which of the following enzymes is ultimately responsible for the production of prostaglandins associated with inflammatory reactions? (a) Phospholipase (b) Lipoxygenase (c) Cyclooxygenase-I (d) Cyclooxygenase II (e) Xanthine oxidase

Last Answer : Ans: D

Activity of cytochrome oxidase is inhibited by (A) Sulphite (B) Sulphate (C) Arsenite (D) Cyanide

Description : Activity of cytochrome oxidase is inhibited by (A) Sulphite (B) Sulphate (C) Arsenite (D) Cyanide

Last Answer : Answer : D

Cytochrome oxidase contains (A) Cu2+ and Zn2+ (B) Cu2+ and Fe2+ (C) Cu2+ and Mn2+ (D) Cu2+

Description : Cytochrome oxidase contains (A) Cu2+ and Zn2+ (B) Cu2+ and Fe2+ (C) Cu2+ and Mn2+ (D) Cu2+

Last Answer : Answer : B

The “Primaquin sensitivity types of haemolytic anaemia has been found to relate to reduced R.B.C activity of which enzyme? (A) Pyruvate kinase deficiency (B) Glucose-6-phosphatase deficiency (C) Glucose-6-p dehydrogenase deficiency (D) Hexokinase deficiency

Description : The “Primaquin sensitivity types of haemolytic anaemia has been found to relate to reduced R.B.C activity of which enzyme? (A) Pyruvate kinase deficiency (B) Glucose-6-phosphatase deficiency (C) Glucose-6-p dehydrogenase deficiency (D) Hexokinase deficiency

Last Answer : C

The following enzyme is required for the hexose monophosphate shunt pathway: (A) Glucose-6-phosphatase (B) Phosphorylase (C) Aldolase (D) Glucose-6-phosphate dehydrogenase

Description : The following enzyme is required for the hexose monophosphate shunt pathway: (A) Glucose-6-phosphatase (B) Phosphorylase (C) Aldolase (D) Glucose-6-phosphate dehydrogenase

Last Answer : D

In conversion of lactic acid to glucose, three reactions of glycolytic pathway are circumvented, which of the following enzymes do not participate? (A) Pyruvate carboxylase (B) Phosphoenol pyruvate carboxy kinase (C) Pyruvate kinase (D) Glucose-6-phosphatase

Description : In conversion of lactic acid to glucose, three reactions of glycolytic pathway are circumvented, which of the following enzymes do not participate? (A) Pyruvate carboxylase (B) Phosphoenol pyruvate carboxy kinase (C) Pyruvate kinase (D) Glucose-6-phosphatase

Last Answer : Answer : B

All of the following are zinc-containing enzymes except (A) Acid Phosphatase (B) Alkaline Phosphatase (C) Carbonic anhydrase (D) RNA polymerase

Description : All of the following are zinc-containing enzymes except (A) Acid Phosphatase (B) Alkaline Phosphatase (C) Carbonic anhydrase (D) RNA polymerase

Last Answer : Answer : A

In conversion of Lactic acid to Glucose, three reactions of Glycolytic pathway are circumvented, which of the following enzymes do not participate? (A) Pyruvate Carboxylase (B) Phosphoenol pyruvate carboxy kinase (C) Pyruvate kinase (D) Glucose-6-phosphatase

Description : In conversion of Lactic acid to Glucose, three reactions of Glycolytic pathway are circumvented, which of the following enzymes do not participate? (A) Pyruvate Carboxylase (B) Phosphoenol pyruvate carboxy kinase (C) Pyruvate kinase (D) Glucose-6-phosphatase

Last Answer : C

Homogentisic oxidase is an (A) Oxidase (B) Monooxygenase (C) Dioxygenase (D) Anaerotic dehydrogenase

Description : Homogentisic oxidase is an (A) Oxidase (B) Monooxygenase (C) Dioxygenase (D) Anaerotic dehydrogenase

Last Answer : Answer : C

Insulin degradation of disulfide bond formation is effected by (A) Pyruvate dehydrogenase (B) Xylitol reductase (C) Gutathione reductase (D) Xanthine oxidase

Description : Insulin degradation of disulfide bond formation is effected by (A) Pyruvate dehydrogenase (B) Xylitol reductase (C) Gutathione reductase (D) Xanthine oxidase

Last Answer : Answer : C

An enzyme of the citric acid cycle also found outside the mitochondria is (A) Isocitrate dehydrogenase (B) Citrate synthetase (C) α-Ketoglutarate dehydrogenase (D) Malate dehydrogenase

Description : An enzyme of the citric acid cycle also found outside the mitochondria is (A) Isocitrate dehydrogenase (B) Citrate synthetase (C) α-Ketoglutarate dehydrogenase (D) Malate dehydrogenase

Last Answer : Answer : C

Enzymes responsible for ketone body formation are associated mainly with the (A) Mitochondria (B) Endoplasmic reticulum (C) Nucleus (D) Golgi apparatus

Description : Enzymes responsible for ketone body formation are associated mainly with the (A) Mitochondria (B) Endoplasmic reticulum (C) Nucleus (D) Golgi apparatus

Last Answer : Answer : A

Cytochrome P450 is: a. involves in phase I metabolic reactions b. found in lysosomes c. found in hepatocytes d. found in mitochondria

Description : Cytochrome P450 is: a. involves in phase I metabolic reactions b. found in lysosomes c. found in hepatocytes d. found in mitochondria

Last Answer : found in hepatocytes

The following are the functions of copper: (A) Constituent of cytochromes (B) Catalase (C) Tyrosinase (D) All of these

Description : The following are the functions of copper: (A) Constituent of cytochromes (B) Catalase (C) Tyrosinase (D) All of these

Last Answer : Answer : D

Consider the following statements: (1) Copper is present in cytochrome oxidane (2) Pantothenic acid is precursor of co-enzyme-A (3) Thiamine prohosphate is the prosthetic group in decarboxylases (4) Zinc is present in RNA and DNA polymerases

Description : Consider the following statements: (1) Copper is present in cytochrome oxidane (2) Pantothenic acid is precursor of co-enzyme-A (3) Thiamine prohosphate is the prosthetic group in decarboxylases (4) Zinc is present in RNA and DNA polymerases

Last Answer : Ans. ((b))