Polymerisation & Biomolecules topics include: Macromolecules, radical vinyl polymerisation, copolymerisation, coordination and step reaction polymerisation, amino acids, DNA and RNA. Polymerization is a central operation in biology that connects molecular signals with events in cells. It's a process where monomers join together to form polymers.  Biomolecules are organic molecules that are important for the maintenance and metabolic functions of living organisms. Polymers, also known as macromolecules, are large molecules made up of many subunits.  Here are some examples of... Show more

Polymerisation & Biomolecules topics include: Macromolecules, radical vinyl polymerisation, copolymerisation, coordination and step reaction polymerisation, amino acids, DNA and RNA.

Polymerization is a central operation in biology that connects molecular signals with events in cells. It's a process where monomers join together to form polymers. 

Biomolecules are organic molecules that are important for the maintenance and metabolic functions of living organisms. Polymers, also known as macromolecules, are large molecules made up of many subunits. 

Here are some examples of biomacromolecules that are synthesized through polymerization: RNA, DNA, Polysaccharides, Proteins. 

In dehydration synthesis, monomers are linked together through a chemical reaction that involves water. Bonds are formed between monomers while losing water molecules. 
Polymers are disassembled through a process called hydrolysis, which is another chemical reaction that involves water.

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Organic Chemistry Practice Test: Polymerisation & Biomolecules

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25 Questions

1. To which of the following does guanine form hydrogen bonds in DNA?

thymineguanineadeninecytosine

2. Dehydration and hydrolysis reactions involve removing or adding which of the following to macromolecule subunits?

COOH and HOH and HCH and NH2C and O

3. Which of the following is true about copolymerisation?

addition of monomer to a metal complex, propagation is by successive insertion of monomer at the metal, and termination occurs when the metal complex separates from the polymermonomers react by eliminating small molecules like H2O, NH3, CH2O and NaCl in a repetitive manner, Indefinite growth of the polymer occurs at both endsradical, coordination, anionic, or cationic polymerization, depending on the type of initiationa mixture of more than one (or different) monomeric species is allowed to polymerize

4. Which of the following is not prepared by Ziegler-Natta coordination polymerisation?

Ethylene-1-alkenebcopolymer (linear low density polyethylene, LLDPE)Polyvinyl acetate (PVAc)High density Polyethylene (HDPE)Ultrahigh molecular weight Polyethylene (UHMWPE)

5. Aniline reacts with which of these to form Schiff base?

Acetic acidBenzaldehydeAcetoneNH3

6. Which of the following is true about Step-growth polymerisation?

monomers react to form first dimers, then trimmers, longer oligomers and eventually long chain polymersmonomers react by eliminating small molecules like H2O, NH3, CH2O and NaCl in a repetitive manner, Indefinite growth of the polymer occurs at both endspolymerization that is catalysed by transition metal salts and complexesradical, coordination, anionic, or cationic polymerization, depending on the type of initiation

7. Animals store glucose in the form of which macromolecule?

GlycerolCelluloseGlycogenAmylose

8. Electrophilic substitution of aniline with bromine in presence of gacial acetic acid gives which of the following?

4-bromo aniline1, 4, 6-tribromo aniline3-bromo aniline2, 4, 6-tribromo aniline

9. Carbohydrates are polyhydroxy compounds of _______________

OligosaccharidesAldehyde and ketoneGlyceraldehydeGlucose

10. In which of the following groups are all polysaccharides?

maltose, lactose and fructosesucrose, glucose and fructoseglycogen, sucrose and maltoseglycogen, cellulose and starch

11. Gradient copolymer comers under which of the following copolymer category?

Linked copolymerTerepolymerBranched copolymerBrush copolymer

12. Glycine and proline are the most abundant amino acids in which of the following structure?

CollagenHemoglobinMyoglobinInsulin

13. During acetylation of amines what is replaced by acetyl groups?

One or more hydrogen atoms attached to carbon atomHydrogen atoms attached to either carbon atom or nitrogen atomOne or more hydrogen atoms attached to nitrogen atomHydrogen atom attached to nitrogen atom

14. Amino acids and proteins are ionized at typical biological pH such that both the amino group and the carboxyl group gain hydrogen ions to become -NH₃⁺ and -COOH, respectively.

Don't knowTrueMaybeFalse

15. DNA is composed of repeating units of ___________

deoxyribonucleosidesribonucleosidesdeoxyribonucleotidesribonucleotides

16. In the reaction, what is the compound C₆H₅N=CHC₆H₅ is known as?
C₆H₅CHO + C₆H₅NH₂ → C₆H₅N=HCC₆H₅ + H₂O

Schiffs baseBenedict reagentAldolSchiffs reagent

17. Which of the following is polymer formed by step-growth polymerization is not classified under condensation polymerisation?

PolysiloxanePolyamidePolyurethanePolyester

18. Which of the following is the condition for ideal copolymerization?

r1=r2r1r2=0r1=1r1r2=1

19. A nucleoside is formed of which of the following units?

nitrogen base, sugar and phosphatenitrogen base and sugarsugar and phosphatenitrogen base and phosphate

20. There are several levels of protein structure, which is the most complex protien?

TertiaryQuaternaryPrimarySecondary

21. Which polymer will be formed when vinyl acetate reacts with peroxides?

22. Reaction of cyclohexanone with dimethylamine in the presence of catalytic amount of an acid forms a compound if water during the reaction is continuously removed. What is the compound formed is generally known as?

An imineAn amineA Schiff’s baseAn enamine

23. Which catalyst is commonly used in coordination chain polymerization?

ziegler- Natta catalystzeoliteplatinumnickel

24. Macromolecule described as large molecules built up from small repeating units called as which of the following?

MetamersBiopolymerDimersMonomers

25. The amine which can react with C₆H₅−SO₂−Cl to form a product insoluble in alkali shall be, is which of the following?

Secondary aminePrimary amineTertiary amineBoth primary and secondary amines