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Chemistry > Unit 4- Organic Materials Structure and Function > Flashcards

Unit 4- Organic Materials Structure and Function Flashcards

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1
Q

a-glucose polymerises to form which branched glucose polymer?

A

Amylopectin

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2
Q

a-glucose polymerises to form which unbranched glucose polymer?

A

Amylose

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3
Q

These are formed where adjacent polypeptides intereact through H bonding between the peptide bonds

A

B-pleated sheets

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4
Q

B-Glucose polymerises to form which unbranched and insoluble polymer?

A

Cellulose

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5
Q

The coiled spring structure where the side chains extend beyond the helix itself is known as …?

A

a-helix

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6
Q

Give an example of a copolymer

A

polyester

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7
Q

Hard water contains high levels of “______”

A

Metals ions such as Ca2+, Fe2+, Mg2+

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8
Q

In relation to water solubility, what is the name given to the carbon chain of a soap molecule?

A

hydrophobic

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9
Q

In relation to water solubility, what is the name given to the ionic end of a soap molecule?

A

hydrophilic

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10
Q

Interactions between side chains of amino acids in a polypeptide chain can be of four forms. Name three.

A

Ionic bonds, Disulfide bonds, hydrophobic interactions/dispersion forces, hydrophilic interactions/H-bonding

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11
Q

The monomer of polylactic acid is?

A

lactic acid

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12
Q

The monomer tetrafluoroethene forms which polymer used for coating frypans.

A

Polytetraflurorethene (PTFE)

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13
Q

Name the amino acid without a chiral centre.

A

Glycine

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14
Q

Name the atom that joins monosaccharides to form a glycosidic bond.

A

oxygen

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15
Q

Name the monomer of polyethylene.

A

Ethene

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16
Q

Provide an advantage of natural polymers over synthetic polymers

A

Natural polymers are biodegradable due to reversibility of condensation reaction

17
Q

The _______ structure considers the 3D arrangment of a protein.

A

Tertiary

18
Q

The _______ structure considers the final, complete structure fo a protein.

A

Quarternary

19
Q

The _______ structure of a protein is the local folding of a polypeptide.

A

Secondary

20
Q

The _______ structure of a protein is the sequence of amino acids.

A

Primary

21
Q

Through which carbons do disaccharides form a glycosidic linkage?

A

1, 4

22
Q

Through which carbons does amylopectin form a glycosidic linkage?

A

1 & 4 and 1 & 6.

23
Q

Triglycerides consist of how many fatty acids?

A

3

24
Q

Two major competing theories exist on the workings of enzymes, Name them.

A

Induced fit model, Lock and Key model

25
Q

What are the products in the reaction between triglycerides and sodium hydroxide?

A

Glycerol and soap molecules

26
Q

What is the empirical formula of a monosaccharide?

A

CH2O

27
Q

What is the name for a monomer of protein?

A

Amino acid

28
Q

What is the name given to a polymer formed from two different monomers?

A

copolymer

29
Q

What is the name given to the form of amino acids where a H+ has been released from the carboxyl group and accepted by the amino group?

A

Zwitterion

30
Q

What is the significant difference between the induced fit model and the lock and key model of enzyme action?

A

The ability of the enzyme to flex.

31
Q

What molecule is eliminated in condensation reactions?

A

water

32
Q

What polymer property(s) does degree of crystallinity affect?

A

Hardness & Density

33
Q

What type of intermolecular forces exist between chains of polypropene?

A

dispersion forces

34
Q

Which polymer is joined by 1-4 and 1-6 glycosidic bonds between alpha glucose molecules?

A

glycogen

35
Q

Which polymer of polypropylene has the methyl groups alternating along the chain?

A

syntactic polypropylene. sPP.

36
Q

Which polymer of polypropylene has the methyl groups on the same side?

A

isotactic polypropylene. iPP.

37
Q

Which polymer of polypropylene has the methyl groups randomly distributed along the chain?

A

atactic polypropylene. aPP.

38
Q

Which structural form/s of polypropene have crystalline regions?

A

isotactic and syntactic

Chemistry (9 decks)

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