3.13 Amino acids, protein & DNA

Question 1

What is the general structure of an amino acid

Answer 1

Question 2

At a neutral pH and in the solid state, what do zwitterions form

Answer 2

This means amino acids have high melting points due to the strong electrostatic attractions between each zwitterion

Question 3

Name the following amino acids

Answer 3

Question 4

What happens in acidic conditions to amino acids

Answer 4

Question 5

What happens to amino acids in alkaline conditions

Answer 5

Question 6

Amino acids can join together to form chains
What do you call it if two amino acids are joined together
- if three are joined together
- if more than three are joined together

Answer 6

Question 7

As peptide contains amide links, a peptide can be hydrolysed back to its constituents amino acids via hydrolysis reactions
State the conditions for this reaction

Answer 7

Question 8

What can these dipeptides form

Answer 8

Question 9

Draw the products of these two reactions

Answer 9

Question 10

Why can secondary structure proteins form hydrogen bonds

Answer 10

Question 11

What are the two forms of a secondary protein structure
How can you break the H bond

Answer 11

Question 12

How can a tertiary structure be formed and what holds it in place

Answer 12

Question 13

What do you need to know about disulfide bonds

Answer 13

Question 14

How do an active site and substrate work together

Answer 14

Question 15

What is meant by the term stereospecific

Answer 15

Question 16

Describe how drug development takes place

Answer 16

Question 17

Apart from using the computer, what is another way to stop an enzyme catalyse a reaction

Answer 17

Question 18

What is a DNA made up of

Answer 18

Question 19

Form the nucleotide using these two molecules

Answer 19

Question 20

Describe how DNA exists as a double helix strand

Answer 20

Question 21

Describe Cis-platin

Answer 21

Question 22

State considerations that need taking into account for Cis-platin

Answer 22

Question 23

Draw the structure when alanine reacts with Na2CO3

Answer 23

Question 24

Draw struture when alanine reacts with CH3Cl in a 1:1 mol ratio

Answer 24

Question 25

Answer 25

Question 26

Draw the structure of an organic compound when one molecule of serine reacts with two molecules of ethanoyl chloride

Answer 26

Question 27

Name type of interaction that is responsible for holding protein chain in a shape of helix

Answer 27

Hydrogen bonding

Question 28

At pH 12, is it acidic or basic conditions. In these conditions, is a hydrogen going to be donated or added

Answer 28

basic donate

Question 29

Primary structure of a protein

Answer 29

Question 30

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Question 31

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Question 32

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Question 33

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Question 34

Bonding that exists between phosphate and sugar groups within a DNA strand

Answer 34

Covalent

Question 35

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Question 36

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Question 37

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Question 38

Define primary protein structure

Answer 38

Specific sequence of amino acids linked together by peptide bonds

Question 39

Draw zwitterion of dipeptide formed by alanine and serine

Answer 39

Question 40

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Question 41

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Question 42

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Question 43

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Question 44

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Question 45

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Question 46

Answer 46