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Biochemistry Interview Questions & Answers - Learning Mode
COOLINTERVIEW.COM MBBS INTERVIEW QUESTIONS BIOCHEMISTRY INTERVIEW QUESTIONS QUESTIONS & ANSWERS - LEARNING MODE

Biochemistry Interview Questions & Answers - Learning Mode

Biochemistry is the branch of science that explores the chemical processes within and related to living organisms. It is a laboratory based science that brings together biology and chemistry. By using chemical knowledge and techniques, biochemists can understand and solve biological problems. Biochemistry is the application of chemistry to the study of biological processes at the cellular and molecular level. It emerged as a distinct discipline around the beginning of the 20th century when scientists combined chemistry, physiology and biology to investigate the chemistry of living systems.

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Biochemistry Interview Questions & Answers - Learning Mode
Try Biochemistry Interview Questions & Answers - Exam Mode
Question: What is the process, by which Aluminium is refined?

Answer: By Hoope?s process Source: CoolInterview.com
Question: Which element in 1A group is lighter than water?

Answer: Lithium, Sodium, and potassium Source: CoolInterview.com
Question: What is the difference between essential and natural amino acids?

Answer: Essential amino acids are those that the organism is not able to synthesize and that need to be ingested by the individual. Natural amino acids are those that are produced by the organism.

There are living species that produce every amino acid they need, for example, the bacteria Escherichia coli that does not have essential amino acids. Other species, like humans, need to obtain essential amino acids from the diet. Among the twenty different known amino acids that form proteins, humans c Source: CoolInterview.com
Question: Give the formula of Borax. Borax is chemically called as.

Answer: Borax Na2B4O7 10H2O is chemically called as hydrated sodium tetra borate
Source: CoolInterview.com
Question: What is Allotropy?

Answer: Allotropy is the property of some chemical elements to exist in two or more different forms, in the same physical state. Source: CoolInterview.com
Question: Why nitrogen cannot form penta halides?

Answer: Because of the absence of d-orbital in its valency shells Source: CoolInterview.com
Question: Define limiting radius.

Answer: The ratio between the radius of cation and the radius of anion is called Limiting radius. Source: CoolInterview.com
Question: Which element in 1A group does not form peroxides?

Answer: Lithium Source: CoolInterview.com
Question: What is racemic mixture? Why it is optically inactive?

Answer: Optical Isomers of a substance that are mirror images of each other are called Enantiomers (or) Enantimorphs. Ex: d and L ? Lactic acid

Optical Isomers of a substance that are not mirror images of each other are called Diastereomers. Ex: d-Tartaric and meso ?Tartaric acids Source: CoolInterview.com
Question: Name the elements for which Cryolite and Pelspar are the ores.

Answer: Na3 Al F6?yolite
K2O.Al2O3.6SiO2 (or) K Al Si3 O8?lspar

Both are ores of Aluminium Source: CoolInterview.com
Question: What are enantimorphs and diastereomers ?

Answer: Optical Isomers of a substance that are mirror images of each other are called Enantiomers (or) Enantimorphs. Ex: d and L ? Lactic acid

Optical Isomers of a substance that are not mirror images of each other are called Diastereomers. Ex: d-Tartaric and meso ?Tartaric acids Source: CoolInterview.com
Question: What amount of catalyst is consumed in the reaction it catalyzes?

Answer: Catalysts are not consumed in the reactions they catalyze. Source: CoolInterview.com
Question: Does RNA molecule have two polynucleotide chains likewise DNA?

Answer: Only DNA has two polynucleotide chains. RNA is formed just by one polynucleotide chain.

Nucleic Acid Review - Image Diversity: RNA molecule
Source: CoolInterview.com
Question: Negative oxidation states of nitrogen are because.

Answer: Higher Electro negativity Source: CoolInterview.com
Question: What are enzyme cofactors?

Answer: Some enzymes need other associated molecules to work. These molecules are called enzyme cofactors and they can be, for example, organic ions, like mineral salts, or organic molecules.

Inactive enzymes for not being bound to their cofactors are called apoenzymes. Active enzymes bound to their cofactors are called holoenzymes.
Source: CoolInterview.com
Question: What are the important sources of Phosphorus?

Answer: Sources of Phosphorous are Phosphate rocks

► Flourapatite {2Ca3 (PO4)2 CaF2}
► Phosphorite {Ca3 (PO4)2}
Source: CoolInterview.com
Question: What is Isomerism?

Answer: Compounds with same molecular formula but different properties are called Isomers and the phenomenon is called Isomerism. Source: CoolInterview.com
Question: How the production of RNA called? What is the enzyme that catalyzes the process?

Answer: The making of RNA from information contained in DNA is called transcription. The enzyme that catalyzes the process is the RNA polymerase.
Source: CoolInterview.com
Question: What is Thermite mixture?

Answer: A mixture of Fe2O3 and ammonium powder in 3:1 ratio is called Thermite mixture. Source: CoolInterview.com
Question: What is the Anhydride of N2O5?

Answer: Nitric acid Source: CoolInterview.com

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Latest 20 Questions
Payment of time- barred debt is: (a) Valid (b) Void (c) Illegal (d) Voidable
Consideration is defined in the Indian Contract Act,1872 in: (a) Section 2(f) (b) Section 2(e) (c) Section 2(g) (d) Section 2(d)
Which of the following is not an exception to the rule, "No consideration, No contract": (a) Natural love and affection (b) Compensation for involuntary services (c) Completed gift (d) Agency
Consideration must move at the desire of: (a) The promisor (b) The promisee (c) The promisor or any other party (d) Both the promisor and the promisee
An offer which is open for acceptance over a period of time is: (a) Cross Offer (b) Counter Offer (c) Standing Offer (d) Implied Offer
Specific offer can be communicated to__________ (a) All the parties of contract (b) General public in universe (c) Specific person (d) None of the above
_________ amounts to rejection of the original offer. (a) Cross offer (b) Special offer (c) Standing offer (d) Counter offer
A advertises to sell his old car by advertising in a newspaper. This offer is caleed: (a) General Offer (b) Special Offer (c) Continuing Offer (d) None of the above
In case a counter offer is made, the original offer stands: (a) Rejected (b) Accepted automatically (c) Accepted subject to certain modifications and variations (d) None of the above
In case of unenforceable contract having some technical defect, parties (a) Can sue upon it (b) Cannot sue upon it (c) Should consider it to be illegal (d) None of the above
If entire specified goods is perished before entering into contract of sale, the contract is (a) Valid (b) Void (c) Voidable (d) Cancelled
______________ contracts are also caled contracts with executed consideration. (a) Unilateral (b) Completed (c) Bilateral (d) Executory
A offers B to supply books @ Rs 100 each but B accepts the same with condition of 10% discount. This is a case of (a) Counter Offer (b) Cross Offer (c) Specific Offer (d) General Offer
_____________ is a game of chance. (a) Conditional Contract (b) Contingent Contract (c) Wagering Contract (d) Quasi Contract
There is no binding contract in case of _______ as one's offer cannot be constructed as acceptance (a) Cross Offer (b) Standing Offer (c) Counter Offer (d) Special Offer
An offer is made with an intention to have negotiation from other party. This type of offer is: (a) Invitation to offer (b) Valid offer (c) Voidable (d) None of the above
When an offer is made to the world at large, it is ____________ offer. (a) Counter (b) Special (c) General (d) None of the above
Implied contract even if not in writing or express words is perfectly _______________ if all the conditions are satisfied:- (a) Void (b) Voidable (c) Valid (d) Illegal
A specific offer can be accepted by ___________. (a) Any person (b) Any friend to offeror (c) The person to whom it is made (d) Any friend of offeree
An agreement toput a fire on a person's car is a ______: (a) Legal (b) Voidable (c) Valid (d) Illegal
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