Define the terms : a. Inhibition b. Electrophoresis c. Catalysis.

Define the terms : a. Inhibition b. Electrophoresis c. Catalysis.
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Define the terms : a. Inhibition b. Electrophoresis c. Catalysis.
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Explain the following terms : (i) Electrophoresis, (ii) Coagulation, (iii) Dialysis (iV) Tyndal Effect

Description : Explain the following terms : (i) Electrophoresis, (ii) Coagulation, (iii) Dialysis (iV) Tyndal Effect

Last Answer : (i) Electrophoresis :- The immigration of colloidal solute towards oppositely charged electrode under an electric potential is called Electrophoresis.  (ii) Coagulation :- The process of settling down ... The scattering of light in colloidal solution by colloidal solute is known as Tyndal effect.

Which one of the following statements is incorrect about enzyme catalysis ?

Description : Which one of the following statements is incorrect about enzyme catalysis ?

Last Answer : Which one of the following statements is incorrect about enzyme catalysis ? A. Enzymes are ... at optimum temperature D. Enzymes action is specific

(4) None of these Explanation: Catalysis is the change in rate of a chemical reaction due to the participation of a substance called a catalyst. Unlike other reagents that participate in the chemical reaction, a catalyst is not consumed by the reaction itself. A catalyst may participate in multiple chemical transformations. Catalysts that speed the reaction are called positive catalysts.

Description : (4) None of these Explanation: Catalysis is the change in rate of a chemical reaction due to the participation of a substance called a catalyst. Unlike other reagents that ... may participate in multiple chemical transformations. Catalysts that speed the reaction are called positive catalysts.

Last Answer : Table salt gets moist during rainy season because – (1) sodium chloride is hygroscopic (2) sodium chloride is deliquescent (3) sodium chloride contains some quantity of sodium iodide (4) sodium chloride contains hygroscopic impurities like magnesium chloride

What do you mean by activity and selectivity of catalysis?

Description : What do you mean by activity and selectivity of catalysis? 

Last Answer : Ans. Activity of catalyst means to increase the extent of chemisorption. Selectivity of Catalyst means to direct a reaction to form selective product.

What is meant by induced catalysis ? Give an example.

Description : What is meant by induced catalysis ? Give an example.

Last Answer : It is a phenomenon in which a chemical reaction increases the rate of another reaction which otherwise may not occur in similar conditions.  Eg. Sodium arsenite (Na3AsO3 ) is not oxidised in air but if ... a solution containing Na3AsO3 and Na2 SO3 , then both AsO3 3- and SO3 2- ions are oxidised.

Shape-selective catalysis

Description : Shape-selective catalysis

Last Answer : Shape-selective catalysis : A catalytic reaction that depends upon the pore structure of catalyst as well as the size of reactant & product molecules is called Shape-selective catalysis.

Mechanism of heterogeneous catalysis

Description : Mechanism of heterogeneous catalysis

Last Answer : Mechanism of heterogeneous catalysis :- The steps are as follows : (i) Diffusion of reactants on the surface of catalyst. (ii) Adsorption of reactants on the surface of catalyst. (iii) ... (ii) Desorption of product from solid surface. (iii) Diffusion of products away from solid surface.

__________ explains the mechanism of catalysis. (A) Activated complex theory (B) Collision theory (C) Thermodynamics (D) None of these

Description : __________ explains the mechanism of catalysis. (A) Activated complex theory (B) Collision theory (C) Thermodynamics (D) None of these

Last Answer : (A) Activated complex theory

Which of the following is not a dimension-less group used in catalysis? (Where, D = dispersion co-efficient, cm2 /sec.D1 = diffusion co-efficient; cm2 /sec L = length of the reactor, cm t = time, sec, v = volumetric flow rate, cm3 /sec. V = volume, cm3 .) (A) Reactor dispersion number (D/vL) (B) Reduced time (vt/V) (C) Thiele modulus L √(k/D1 ) (D) None of these

Description : Which of the following is not a dimension-less group used in catalysis? (Where, D = dispersion co-efficient, cm2 /sec.D1 = diffusion co-efficient; cm2 /sec L = length of the reactor, cm t = time, sec, v = volumetric ... (D/vL) (B) Reduced time (vt/V) (C) Thiele modulus L √(k/D1 ) (D) None of these

Last Answer : (D) None of these

........................ studied the kinetics of enzyme catalysis. a. Arrhenius b. Rutherford c. Micheal Faraday d. Michaelis & Menten

Description : ........................ studied the kinetics of enzyme catalysis. a. Arrhenius b. Rutherford c. Micheal Faraday d. Michaelis & Menten

Last Answer : d. Michaelis & Menten

Which of the following is incorrect about heterogeneous catalysis? a. The most effective catalysts are those which have small surface area b. Seperation of catlyst is easy c. Increase in the rate of reaction is due to decrease in the activation energy d. It is based upon the phenomenon of adsorption

Description : Which of the following is incorrect about heterogeneous catalysis? a. The most effective catalysts are those which have small surface area b. Seperation of catlyst is easy c. Increase in the rate of reaction is due to decrease in the activation energy d. It is based upon the phenomenon of adsorption

Last Answer : a. The most effective catalysts are those which have small surface area

20. Which one of the following statements is incorrect about enzyme catalysis? (1) Enzymes are least reactive at optimum temperature (2) Enzymes are mostly proteinous in nature (3) Enzyme action is specific (4) Enzymes are denaturated by ultraviolet rays and at high temperature

Description : 20. Which one of the following statements is incorrect about enzyme catalysis? (1) Enzymes are least reactive at optimum temperature (2) Enzymes are mostly proteinous in nature (3) Enzyme action is specific (4) Enzymes are denaturated by ultraviolet rays and at high temperature

Last Answer : Enzymes are least reactive at optimum temperature

Substance which increase the activity of certain enzymes called (a) Pro-enzyme (b) Iso-enzymes (d) Co-enzymes (d) Catalysis

Description : Substance which increase the activity of certain enzymes called (a) Pro-enzyme (b) Iso-enzymes (d) Co-enzymes (d) Catalysis

Last Answer : c

A family of organic compounds whose molecules will add water under an acid catalysis and change into alcohols are the: w) alkenes x) alkanes y) aromatic hydrocarbons z) cycloalkanes

Description : A family of organic compounds whose molecules will add water under an acid catalysis and change into alcohols are the: w) alkenes x) alkanes y) aromatic hydrocarbons z) cycloalkanes

Last Answer : ANSWER: W -- ALKENES

The action of concentrated sulfuric acid on sugar best described as: w) catalysis x) oxidation y) reduction z) dehydration

Description : The action of concentrated sulfuric acid on sugar best described as: w) catalysis x) oxidation y) reduction z) dehydration

Last Answer : ANSWER: Z -- DEHYDRATION

How long can I leave this 1% agarose gel out in room temperature before electrophoresis?

Description : How long can I leave this 1% agarose gel out in room temperature before electrophoresis?

Last Answer : From surfing around, it looks like the gel will last several weeks at room temperature without drying out. I couldn’t find anything that indicated that which dye is used matters, but I doubt it.

Why does DNA move towards the anode in gel electrophoresis? -Biology

Description : Why does DNA move towards the anode in gel electrophoresis? -Biology

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What is gel electrophoresis? -Biology

Description : What is gel electrophoresis? -Biology

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What is agarose gel electrophoresis? -Biology

Description : What is agarose gel electrophoresis? -Biology

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What is agarose gel electrophoresis used for? -Biology

Description : What is agarose gel electrophoresis used for? -Biology

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What does agarose gel electrophoresis do? -Biology

Description : What does agarose gel electrophoresis do? -Biology

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What is gel electrophoresis used for? -Biology

Description : What is gel electrophoresis used for? -Biology

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What is gel electrophoresis used for? -Biology

Description : What is gel electrophoresis used for? -Biology

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In electrophoresis,

Description : In electrophoresis,

Last Answer : In electrophoresis, A. the colloidal particles migrate in an applied electric field. B. the medium ... . neither the particles not the medium migrate.

Explain Electrophoresis in brief with the help of diagram. What are its applications?

Description : Explain Electrophoresis in brief with the help of diagram. What are its applications?

Last Answer : Explain Electrophoresis in brief with the help of diagram. What are its applications?

How does DNA migrate in electrophoresis?

Description : How does DNA migrate in electrophoresis?

Last Answer : Need answer

How does gel electrophoresis separate DNA fragments?

Description : How does gel electrophoresis separate DNA fragments?

Last Answer : There is a specific density of gel used in the electrophoresis.The DNA is placed in a well, and then electrical charge is used topull the DNA through the gel. Because spliced DNA is ... taxi cab, which is larger, movesslower through the traffic. The bicycle which is smaller, movesquicker.

Protein electrophoresis - urine?

Description : Protein electrophoresis - urine?

Last Answer : DefinitionA urine protein electrophoresis is a test that estimates how much of certain proteins you have in your urine.See also:Immunoelectrophoresis - urineImmunofixation - urineAlternative NamesUrine protein ... the health care provider or assistant.In infants, thoroughly wash the area around the

Protein electrophoresis - serum?

Description : Protein electrophoresis - serum?

Last Answer : DefinitionThis test measures the types of protein in the fluid (serum) part of a blood sample.See also:Immunoelectrophoresis - serumImmunofixation - serumSerum globulin electrophoresisAlternative NamesLipoprotein ... except albumin, are not usually measured. However, protein fractions or groups A

Hemoglobin electrophoresis?

Description : Hemoglobin electrophoresis?

Last Answer : DefinitionHemoglobin electrophoresis is a test that measures the different types of the oxygen-carrying protein (hemoglobin) in the blood.Alternative NamesHb electrophoresis; Hgb electrophoresis; Electrophoresis - ... .Once the blood has been collected, the needle is removed, and the punctu

Why can gel electrophoresis separate dna fragments?

Description : Why can gel electrophoresis separate dna fragments?

Last Answer : Electrophoresis enables you to distinguish DNA fragments of different lengths. DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively ... marker, you can work out the approximate length of the DNA fragments in the samples.

Why can gel electrophoresis separate dna fragments?

Description : Why can gel electrophoresis separate dna fragments?

Last Answer : Electrophoresis enables you to distinguish DNA fragments of different lengths. DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively ... marker, you can work out the approximate length of the DNA fragments in the samples.

Lipoprotiens may be identified more accurately by means of (A) Electrophoresis (B) Ultra centrifugation (C) Centrifugation (D) Immunoelectrophoresis

Description : Lipoprotiens may be identified more accurately by means of (A) Electrophoresis (B) Ultra centrifugation (C) Centrifugation (D) Immunoelectrophoresis

Last Answer : Answer : D

Plasma protein can be separated by (A) Salting out with (NH4)2SO4 (B) Ultracentrifugation (C) Immuno electrophoresis (D) All of these

Description : Plasma protein can be separated by (A) Salting out with (NH4)2SO4 (B) Ultracentrifugation (C) Immuno electrophoresis (D) All of these

Last Answer : Answer : D

The movement of charged particles towards one of the electrodes under the influence of electrical current is (A) Gel filtration (B) Molecular sieving (C) Gas liquid chromatography (D) Electrophoresis

Description : The movement of charged particles towards one of the electrodes under the influence of electrical current is (A) Gel filtration (B) Molecular sieving (C) Gas liquid chromatography (D) Electrophoresis

Last Answer : Answer : D

The antibodies raised against a pure protein will show only one sharp spike on this technique: (A) Solubility curve (B) Solvent precipitation (C) Molecular weight determination (D) Immuno electrophoresis

Description : The antibodies raised against a pure protein will show only one sharp spike on this technique: (A) Solubility curve (B) Solvent precipitation (C) Molecular weight determination (D) Immuno electrophoresis

Last Answer : Answer : D

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

Which of the following techniques is used to separate proteins based upon differences in their mass? (A) Isoelectric focusing (B) Dialysis (C) SDS-gel Electrophoresis (D) Western blotting

Description : Which of the following techniques is used to separate proteins based upon differences in their mass? (A) Isoelectric focusing (B) Dialysis (C) SDS-gel Electrophoresis (D) Western blotting

Last Answer : Answer : C

Plasma proteins are isolated by (A) Salting out (B) Electrophoresis (C) Flourimetry (D) Both (A) and (B)

Description : Plasma proteins are isolated by (A) Salting out (B) Electrophoresis (C) Flourimetry (D) Both (A) and (B)

Last Answer : Answer : D

Primary structure of proteins can be determined by the use of (A) Electrophoresis (B) Chromatography (C) Ninhydrin (D) Sanger’s reagent

Description : Primary structure of proteins can be determined by the use of (A) Electrophoresis (B) Chromatography (C) Ninhydrin (D) Sanger’s reagent

Last Answer : Answer : D

The technique for purification of proteins that can be made specific for a given protein is (A) Gel filtration chromotography (B) Ion exchange chromatography (C) Electrophoresis (D) Affinity chromatography

Description : The technique for purification of proteins that can be made specific for a given protein is (A) Gel filtration chromotography (B) Ion exchange chromatography (C) Electrophoresis (D) Affinity chromatography

Last Answer : Answer : D

What is immuno electrophoresis ?

Description : What is immuno electrophoresis ?

Last Answer : The resolving power of immuno diffusion was greatly enhanced bye immuno electrophoresis. This involves the electrophoretic separation of antigen into its constituent proteins followed by immuno diffusion. ... The formation of precipitin bands can be observed for the individual antigen components.

How is immuno electrophoresis more advance than paper electrophoresis ?

Description : How is immuno electrophoresis more advance than paper electrophoresis ?

Last Answer : In paper electrophoresis, serum proteins can be separated into 5 different bands but the same protein using immuno electrophoresis can be separated into 30 different proteins.

Give some applications of immuno electrophoresis ?

Description : Give some applications of immuno electrophoresis ?

Last Answer : This technique is useful for testing normal and abnormal proteins in serum and urine. It is useful to determine whether a patient produces abnormally a low amount of one or more proteins. It is also used if a patient over produces some serum proteins.

What is counter current immuno electrophoresis ?

Description : What is counter current immuno electrophoresis ?

Last Answer : This technique involves the simultaneous electrophoresis of antigen and antibody in the gel in the opposite direction resulting in precipitation of point where there is optimum concentration of antigen- ... 30 minutes and is 10 times more sensitive than the standard double diffusion technique.

In the process of dialysis, used on patients with affected kidneys, the phenomenon involved is (a) diffusion (b) absorption (c) osmosis (d) electrophoresis

Description : In the process of dialysis, used on patients with affected kidneys, the phenomenon involved is (a) diffusion (b) absorption (c) osmosis (d) electrophoresis

Last Answer : Ans:(c)

The process used in the desalination of sea water is (a) osmosis (b) reverse osmosis (c) electrophoresis (d) distillation

Description : The process used in the desalination of sea water is (a) osmosis (b) reverse osmosis (c) electrophoresis (d) distillation

Last Answer : Ans:(b)

In the process of dialysis, used on patients with affected kidneys, the phenomenon involved is (1) Diffusion (2) Absorption (3) Osmosis (4) Electrophoresis

Description : In the process of dialysis, used on patients with affected kidneys, the phenomenon involved is (1) Diffusion (2) Absorption (3) Osmosis (4) Electrophoresis

Last Answer : (3) Osmosis Explanation: Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water (ultrafiltration) from the blood. This process is naturally done by our kidneys. It ... it results in osmotic pressure which causes the fluid to move from the blood into the dialysate.

Rcmoval of carbon particles from air involves the principle of – (1) Precipitation (2) FiIteration (3) Electrophoresis (4) Sedimentation

Description : Rcmoval of carbon particles from air involves the principle of – (1) Precipitation (2) FiIteration (3) Electrophoresis (4) Sedimentation

Last Answer : (3) Electrophoresis Explanation: Carbon particles in air are colloidal in nature and carry negative charge. The removal of carbon parities from air involves the principle of electrophoresis. Carbon particles get ... losing their charge and, thus, the air which finally comes out is free from them.

Removal of carbon particles from air involves the principle of - (1) Precipitation (2) Filteration (3) Electrophoresis (4) Sedimentation

Description : Removal of carbon particles from air involves the principle of - (1) Precipitation (2) Filteration (3) Electrophoresis (4) Sedimentation

Last Answer : (3) Electrophoresis Explanation: Electrophoresis is the process of separating certain large molecules so they can be examined more easily.