Thermodynamically, how reactions are classified?

Thermodynamically, how reactions are classified?
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Exothermic, isothermic and endothermic reactions.
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Thermodynamically most stable allotrope of phosphorus is :

Description : Thermodynamically most stable allotrope of phosphorus is :

Last Answer : Thermodynamically most stable allotrope of phosphorus is : A. Red B. White C. Black D. Yellow

Thermodynamically most stable allotrope of phosphorus is :

Description : Thermodynamically most stable allotrope of phosphorus is :

Last Answer : Thermodynamically most stable allotrope of phosphorus is : A. Red B. White C. Black D. Yellow

Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor? (A) Molten sodium cooled (B) CO2 gas cooled (C) Pressurised water (D) Boiling water

Description : Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor? (A) Molten sodium cooled (B) CO2 gas cooled (C) Pressurised water (D) Boiling water

Last Answer : (D) Boiling water

Although thermodynamically feasible, in practice, Magnesium metal is not used for the reduction of Alumina in the metallurgy of aluminium.Why?

Description : Although thermodynamically feasible, in practice, Magnesium metal is not used for the reduction of Alumina in the metallurgy of aluminium.Why?

Last Answer : Ans. : Below the temperature(1623 K) correspoinding to the point of intersection of Al 2O3 and MgO curves in Ellingham diagram, Magnesium can reduce Alumina because the ΔfG o value of Al2O3 at ... to Al. But Magnesium is much costier metal than Aluminium and hence the process will be uneconomical.

If a system after undergoing a series of processes, returns to the initial state then  (a) process is thermodynamically in equilibrium  (b) process is executed in closed system cycle  (c) its entropy will change due to irreversibility  (d) sum of heat and work transfer will be zero  (e) no work will be done by the system.

Description : If a system after undergoing a series of processes, returns to the initial state then  (a) process is thermodynamically in equilibrium  (b) process is executed in closed system cycle  (c) its entropy will ... sum of heat and work transfer will be zero  (e) no work will be done by the system.

Last Answer : Answer : d

Which of the following processes are thermodynamically reversible  (a) throttling  (b) free expansion  (c) constant volume and constant pressure  (d) hyperbolic and pV = C  (e) isothermal and adiabatic.

Description : Which of the following processes are thermodynamically reversible  (a) throttling  (b) free expansion  (c) constant volume and constant pressure  (d) hyperbolic and pV = C  (e) isothermal and adiabatic.

Last Answer : Answer : e

Into how many types is antigen-antibody reactions are broadly classified ?

Description : Into how many types is antigen-antibody reactions are broadly classified ?

Last Answer : It is broadly classified into five- Precipitation Agglutination Complement fixation Immunoassay using labeled reagents Immunohistrochemistry (Immunoflourescence)

Transfer RNAs are classified on the basis of the number of base pairs in (A) Acceptor arm (B) Anticodon arm (C) D arm (D) Extra arm

Description : Transfer RNAs are classified on the basis of the number of base pairs in (A) Acceptor arm (B) Anticodon arm (C) D arm (D) Extra arm

Last Answer : Answer : D

The immunoglobulins are classified on the basis of (A) Light chains (B) Heavy chains (C) Carbohydrate content (D) Electrophoretic mobility

Description : The immunoglobulins are classified on the basis of (A) Light chains (B) Heavy chains (C) Carbohydrate content (D) Electrophoretic mobility

Last Answer : Answer : B

An enzyme catalyzes the conversion of an aldose sugar to a ketose sugar would be classified as one of the (A) Transferases (B) Isomerases (C) Oxido reductases (D) Hydrolases

Description : An enzyme catalyzes the conversion of an aldose sugar to a ketose sugar would be classified as one of the (A) Transferases (B) Isomerases (C) Oxido reductases (D) Hydrolases

Last Answer : Answer : B

Which of the following are classified as essential fatty acids? (A) Arachidonic acid (B) Oleic acid (C) Acetic acid (D) Butyric acid

Description : Which of the following are classified as essential fatty acids? (A) Arachidonic acid (B) Oleic acid (C) Acetic acid (D) Butyric acid

Last Answer : Answer : A

Cerebrosides may also be classified as (A) Sphingolipids (B) Sulpholipids (C) Aminolipids (D) Glycolipids

Description : Cerebrosides may also be classified as (A) Sphingolipids (B) Sulpholipids (C) Aminolipids (D) Glycolipids

Last Answer : Answer : A

Which one of the following statements concerning glutamine is correct? (A) Contains three tetratable groups (B) Is classified as an acidic amino acid (C) Contains an amide group (D) Migrates to the cathode during electrophoresis at pH 7.0

Description : Which one of the following statements concerning glutamine is correct? (A) Contains three tetratable groups (B) Is classified as an acidic amino acid (C) Contains an amide group (D) Migrates to the cathode during electrophoresis at pH 7.0

Last Answer : Answer : C

In metabolic point of view, amino acids are classified as (A) Glycogenic (B) Ketogenic (C) Glycogenic or Ketogenic (D) All of these

Description : In metabolic point of view, amino acids are classified as (A) Glycogenic (B) Ketogenic (C) Glycogenic or Ketogenic (D) All of these

Last Answer : Answer : D

Immunoglobulins are classified on the basis of (A) Type of light chains (B) Type of heavy chains (C) Types of light and heavy chains (D) Molecular weight

Description : Immunoglobulins are classified on the basis of (A) Type of light chains (B) Type of heavy chains (C) Types of light and heavy chains (D) Molecular weight

Last Answer : Answer : B

How phospholipids are classified?

Description : How phospholipids are classified?

Last Answer : 1. Nitrogen containing glycero phosphatides, 2. Non-nitrogen containing glycero phosphatides, 3. Plasmalogens, 4. Phospho sphingosides 5. Glycosphingolipids 6. Sulpholipids.

How prostaglandins are classified?

Description : How prostaglandins are classified?

Last Answer : According to the attachment of different substituent groups to the ring, PGs are named with capital letters such as A, B, E and F. In the same series, depending on number of double bonds on the side chains ... have two double bonds at 13-14 (trans) and 5-6 (cis). This is the most common variety.

Fatty acids are classified in any other manner?

Description : Fatty acids are classified in any other manner?

Last Answer : They are also classified as saturated or unsaturated fatty acids.

How lipids are classified?

Description : How lipids are classified?

Last Answer : Simple, compound and derived.

How diabetes mellitus is classified?

Description : How diabetes mellitus is classified? 

Last Answer : Type 1 and type 2.

How polysaccharides are classified?

Description : How polysaccharides are classified?

Last Answer : Homopolysaccharides (homoglycans) and heteropolysaccharides (heteroglycans).

How are monosaccharides further classified?

Description : How are monosaccharides further classified?

Last Answer : Sugars having aldehyde group are called aldoses and sugars with keto group are ketoses.

How carbohydrates are classified?

Description : How carbohydrates are classified?

Last Answer : Based on the number of the sugar units available, they are classified as monosaccharides, disaccharides, oligosaccharides, and polysaccharides.

How are co-enzymes classified?

Description : How are co-enzymes classified?

Last Answer : (a) Those taking part in reactions catalysed by oxidoreductases by donating or accepting hydrogen atoms or electrons. (b) Those co-enzymes taking part in reactions transferring groups other than hydrogen.

Peptidases are classified under which class of enzyme?

Description : Peptidases are classified under which class of enzyme?

Last Answer : Hydrolases.

How are enzymes classified?

Description : How are enzymes classified?

Last Answer : They are classified into five major classes.

Based on physiochemical properties, how are they classified?

Description : Based on physiochemical properties, how are they classified?

Last Answer : Simple proteins, conjugated proteins and derived proteins

How proteins are classified?

Description : How proteins are classified?

Last Answer : They may be classified depending on the func- tion or based on the physicochemical characteris- tics or based on their nutritional value.

How are co-transport systems classified?

Description : How are co-transport systems classified?

Last Answer : The cotransport system may be symport or antiport

The water produced during metabolic reactions in an adult is about (A) 100 ml/day (B) 300 ml/day (C) 500 ml/day (D) 700 ml/day

Description : The water produced during metabolic reactions in an adult is about (A) 100 ml/day (B) 300 ml/day (C) 500 ml/day (D) 700 ml/day

Last Answer : Answer : B

The correct sequence of the reactions of catabolism of adenosine to uric acid is (A) Adenosine→hypoxanthine→xanthine→uric acid (B) Adenosine→xanthine→inosine→uric acid (C) Adenosine→inosine→hypoxanthine→ xanthine uric acid (D) Adenosine→xanthine→inosine→hypoxanthine uric acid

Description : The correct sequence of the reactions of catabolism of adenosine to uric acid is (A) Adenosine→hypoxanthine→xanthine→uric acid (B) Adenosine→xanthine→inosine→uric acid (C) Adenosine→inosine→hypoxanthine→ xanthine uric acid (D) Adenosine→xanthine→inosine→hypoxanthine uric acid

Last Answer : Answer : C

Magnesium ions are required in the reactions involving (A) NAD (B) FAD (C) ATP (D) CoA

Description : Magnesium ions are required in the reactions involving (A) NAD (B) FAD (C) ATP (D) CoA

Last Answer : Answer : C

In some reactions, energy is captured in the form of (A) GTP (B) UTP (C) CTP (D) None of these

Description : In some reactions, energy is captured in the form of (A) GTP (B) UTP (C) CTP (D) None of these

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 : Answer : B

A metabolic pathways is a (A) Route taken by chemicals (B) Sequence of enzyme facilitated chemical reactions (C) Route taken by an enzyme from one reaction to another (D) Sequence of origin of organic molecules

Description : A metabolic pathways is a (A) Route taken by chemicals (B) Sequence of enzyme facilitated chemical reactions (C) Route taken by an enzyme from one reaction to another (D) Sequence of origin of organic molecules

Last Answer : Answer : B

Template/lock and key theory of enzyme action is supported by (A) Enzymes speed up reaction (B) Enzymes occur in living beings and speed up certain reactions (C) Enzymes determine the direction of reaction (D) Compounds similar to substrate inhibit enzyme activity

Description : Template/lock and key theory of enzyme action is supported by (A) Enzymes speed up reaction (B) Enzymes occur in living beings and speed up certain reactions (C) Enzymes determine the direction of reaction (D) Compounds similar to substrate inhibit enzyme activity

Last Answer : Answer : D

Enzyme catalysed reactions occur in (A) Pico seconds (B) Micro seconds (C) Milli seconds (D) None of these

Description : Enzyme catalysed reactions occur in (A) Pico seconds (B) Micro seconds (C) Milli seconds (D) None of these

Last Answer : Answer : C

Enzymes increases the rate of reactions by (A) Increasing the free energy of activation (B) Decreasing the energy of activation (C) Changing the equilibrium constant of the reaction (D) Increasing the free energy change of the reaction

Description : Enzymes increases the rate of reactions by (A) Increasing the free energy of activation (B) Decreasing the energy of activation (C) Changing the equilibrium constant of the reaction (D) Increasing the free energy change of the reaction

Last Answer : Answer : B

The function of an enzyme is to (A) Cause chemical reactions that would not otherwise take place (B) Change the rates of chemical reactions (C) Control the equilibrium points of reactions (D) Change the directions of reactions

Description : The function of an enzyme is to (A) Cause chemical reactions that would not otherwise take place (B) Change the rates of chemical reactions (C) Control the equilibrium points of reactions (D) Change the directions of reactions

Last Answer : Answer : B

Enzymes increase the rates of reactions by (A) Increasing the free energy of activation (B) Decreasing the energy of activation (C) Changing the equilibrium constant of the reaction (D) Increasing the free energy change of the reaction

Description : Enzymes increase the rates of reactions by (A) Increasing the free energy of activation (B) Decreasing the energy of activation (C) Changing the equilibrium constant of the reaction (D) Increasing the free energy change of the reaction

Last Answer : Answer : B

Which of the following regulatory reactions involves a reversible covalent modification of an enzyme? (A) Phosphorylation of serine OH on the enzyme (B) Allosteric modulation (C) Competitive inhibition (D) Non-competitive inhibition

Description : Which of the following regulatory reactions involves a reversible covalent modification of an enzyme? (A) Phosphorylation of serine OH on the enzyme (B) Allosteric modulation (C) Competitive inhibition (D) Non-competitive inhibition

Last Answer : Answer : A

The rate of most enzyme catalysed reactions changes with pH. As the pH increases, this rate (A) reaches a minimum, then increases (B) reaches a maximum, then decreases (C) increases (D) decreases

Description : The rate of most enzyme catalysed reactions changes with pH. As the pH increases, this rate (A) reaches a minimum, then increases (B) reaches a maximum, then decreases (C) increases (D) decreases

Last Answer : Answer : B

The rate of HMP shunt reactions is (A) Increased by Insulin (B) Increased in diabetes mellitus (C) Increased by glucagons (D) Increased in starvation

Description : The rate of HMP shunt reactions is (A) Increased by Insulin (B) Increased in diabetes mellitus (C) Increased by glucagons (D) Increased in starvation

Last Answer : Answer : A

In citric acid cycle, NAD is reduced in (A) One reactions (B) Two reactions (C) Three reactions (D) Four reactions

Description : In citric acid cycle, NAD is reduced in (A) One reactions (B) Two reactions (C) Three reactions (D) Four reactions

Last Answer : Answer : C

Enzymes accelerate the rate of reactions by (A) Increasing the equilibrium constant of reactions (B) Increasing the energy of activation (C) Decreasing the energy of activation (D) Decreasing the free energy change of the reaction

Description : Enzymes accelerate the rate of reactions by (A) Increasing the equilibrium constant of reactions (B) Increasing the energy of activation (C) Decreasing the energy of activation (D) Decreasing the free energy change of the reaction

Last Answer : Answer : C

A coenzyme required in carboxylation reactions is (A) Lipoic acid (B) Coenzyme A (C) Biotin (D) All of these

Description : A coenzyme required in carboxylation reactions is (A) Lipoic acid (B) Coenzyme A (C) Biotin (D) All of these

Last Answer : Answer : C

A coenzyme required in transamination reactions is (A) Coenzyme A (B) Coenzyme Q (C) Biotin (D) Pyridoxal phosphate

Description : A coenzyme required in transamination reactions is (A) Coenzyme A (B) Coenzyme Q (C) Biotin (D) Pyridoxal phosphate

Last Answer : Answer : D

Which of the following coenzyme takes part in oxidation-reduction reactions? (A) Pyridoxal phosphate (B) Lipoic acid (C) Thiamin diphosphate (D) None of these

Description : Which of the following coenzyme takes part in oxidation-reduction reactions? (A) Pyridoxal phosphate (B) Lipoic acid (C) Thiamin diphosphate (D) None of these

Last Answer : Answer : B

Which of the following coenzyme takes part in hydrogen transfer reactions? (A) Tetrahydrofolate (B) Coenzyme A (C) Coenzyme Q (D) Biotin

Description : Which of the following coenzyme takes part in hydrogen transfer reactions? (A) Tetrahydrofolate (B) Coenzyme A (C) Coenzyme Q (D) Biotin

Last Answer : Answer : C

Coenzymes are required in which of the following reactions? (A) Oxidation-reduction (B) Transamination (C) Phosphorylation (D) All of these

Description : Coenzymes are required in which of the following reactions? (A) Oxidation-reduction (B) Transamination (C) Phosphorylation (D) All of these

Last Answer : Answer : D