Enzymes lose the catalytic activity at temperature above 70C due to

Biochemistry Pharmacist Competitive Exams

Q. Enzymes lose the catalytic activity at temperature above 70C due to

Ans → Denaturation

Explanation →

This question is taken from the test/quiz post: Biochemistry Important One Liners Questions On enzymes - attemp/practice

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More oneliners in - Biochemistry Important One Liners Questions On enzymes

Q. The literal meaning of enzyme is

Ans → In yeast

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Q. The class of enzymes involved in synthetic reactions are

Ans → Ligases

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Q. The non-protein part of holoenzyme

Ans → Coenzyme

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Q. Enzymes lose the catalytic activity at temperature above 70C due to

Ans → Denaturation

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Q. Examples of two enzymes containing zinc are

Ans → Alcohol dehydrogenase, carbonic anhydrase

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Q. The place at which substrate binds with the enzyme

Ans → Active site

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Q. The enzyme glucose 6-phosphate dehydrogenase requires the coenzyme

Ans → NADP+,

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Q. The E.C. number for alcohol dehydrogenase is

Ans → E.C. 1.1.1.1

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Q. Phsophofructokinase is allosterically activated by

Ans → AMP/ADP

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Q. The very first enzyme elevated in serum in myocardial infarction

Ans → Creatine phosphokinase (CPK)

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Q. Pepsin is an example for the class of enzymes namely

Ans → Hydrolases

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Q. The coenzyme not involved in hydrogen transfer

Ans → FH4

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Q. In the feedback regulation, the end product binds at

Ans → Allosteric site

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Q. Glutamyl transpeptidase activity in serum is elevated in

Ans → Alcoholism

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Q. In recent years, a non-protein compound has been identified to bring about catalysis in biological system. The name of the compound is

Ans → RNA

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More one-liners in - Biochemistry

Q. Name the class of antibacterials that inhibit cell wall synthesis by binding to peptidoglycan subunits and blocking their insertion into the cell wall backbone.

Ans → glycopeptides

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Q. The process of separation of a racemate into its two enantiomers by means of some chiral agency.

Ans → resolution

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Q. The sideways projection of a carbon-carbon single bond and the attached substituents.

Ans → sawhorse projection

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Q. Non-fluid colloidal network or polymer network that is expanded throughout its whole volume by a fluid. 

Ans → gel

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Q. Tophi are mostly made up of

Ans → Sodium urate

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Q. Glutamyl transpeptidase activity in serum is elevated in

Ans → Alcoholism

Explanation →

Q. The number of ATP produced when a molecule of acetyl CoA is oxidized through citric acid cycle

Ans → 12

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Q. A more negative redox potential represents a greater tendency to lose

Ans → Electrons

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Q. The amino acid found in protein structure

Ans → Proline

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Q. Nucleic acids are the polymers of

Ans → Nucleotides

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Q. A ligand that binds to a receptor and alters the receptor state resulting in a biological response.

Ans → Agonist

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Q. The synthesis of urea occurs in

Ans → Liver

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Q. An instrument used to measure the amount of rotation of plane polarized light by a compound, generally prepared in a solution

Ans → polarimeter

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Q. An atom which has lost or gained electrons and become charged.

Ans → ion

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Q. The metabolite excreted in urine in thiamine deficiency

Ans → Pyruvate

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Q. Gastric HCl is secreted by

Ans → Parietal (oxyntic) cells

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Q. The movement of chemicals (drugs) into, through, and out of biological organisms or their parts.

Ans → Biotranslocation

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Q. Name the amino acid that directly participates in the synthesis of heme

Ans → Glycine

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Q. The representation of a compound by two or more canonical structures in which the valence electrons are rearranged to give structures of similar probability.

Ans → resonance

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Q. Name the organism that uses fixed organic carbon compounds as its carbon source

Ans → heterotroph

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Q. The amino acid that contributes to the synthesis of more than half of the pyrimidine ring

Ans → Aspartate

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Q. Formation of microparticles encapsulating a drug.

Ans → microencapsulation

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Q. The sideways projection of a carbon-carbon single bond and the attached substituents.

Ans → sawhorse projection

Explanation →

Q. Fourth stage of disease, during which the number of pathogens present in the host decreases, along with signs and symptoms of disease

Ans → period of decline

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Q. The coenzyme not involved in hydrogen transfer

Ans → FH4

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Q. Molecules that contain groups with characteristically different properties, e.g., both hydrophilic and lipophilic (hydrophobic) properties.

Ans → amphiphilic

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Q. A compound (or object) that is superimposible on its mirror image.

Ans → achiral

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Q. If an electron passes from one orbital to another an electronic transition occurs and there is the emission or absorption of energy corresponding to the difference in energy of the two orbitals known as

Ans → electronic transition

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Q. The two amino acids that are never glucogenic are

Ans → Leucine and lysine

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Q. Cellulose is not digested in humans due to lack of the enzyme that hydrolyses

Ans → β-Glycosidic bonds

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Q. The most important naturally occurring aldose/monosaccharide.

Ans → D- glucose

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Q. Name the cells that can assists in the organization of neurons, provides a scaffold for some aspects of neuron function, and aids in recovery from neural injury

Ans → glial cell

Explanation →

Q. Name the most serious stage of pertussis (whooping cough), characterized by severe and prolonged coughing spells

Ans → paroxysmal stage

Explanation →