Biochemistry L02 Macromolecular Building Blocks Flashcards Preview

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Flashcards in Biochemistry L02 Macromolecular Building Blocks Deck (21):
1

What is the side chain (R) group for alanine?

a methyl group

2

What type of chemical bonds are glycosidic bonds and by what process are they broken?

covalent, hydrolysis

3

Give an example of a biological protein that has quaternary structure?

e.g. haemoglobin (2 alpha and 2 beta subunits)

4

What is the process allowing the formation of protein/polysaccharide polymers?

condensation

5

Which enantiomer of amino acids is found in human proteins, L or D?

L

6

What are the four main constituents of phospholipid structure?

fatty acids, glycerol, phosphate, polar head group

7

Are carbohydrates polar? If so, what main functional group makes them polar?

yes, alcohol (-OH)

8

In tertiary structure, which two main forces drive protein folding?

hydrophobic interactions and disulphide bonds

9

Does fructose have an aldehyde group or ketone group?

ketone

10

In animal cells, what is the name of the glucose storage polymer?

glycogen

11

What is the structural sugar in plants?

cellulose

12

What are the 2 basic units comprising fats and oils?

glycerol and fatty acids

13

In triglycerides, what type of bond links the fatty acids to the glycerol molecule?

ester bond

14

Is cholesterol polar or non polar? Name 2 types of biological substances cholesterol is used to produce?

non polar, vitamins/hormones

15

What are the four main substituents chemically attached to an alpha carbon in amino acid structure?

hydrogen, amino group, carboxyl group, side chain (R)

16

In basic pH, are the amino and carboxyl groups of amino acids protonated or deprotonated?

both deprotonated

17

What inherited disorder involves the impaired conversion of phenylalanine to tyrosine?

Phenylketonuria

18

What is the name of the bond between amino acids in a polypeptide and what type of chemical bonding is it?

peptide bonds, covalent

19

Which level of protein structure is a sequence of amino acids?

primary

20

An alpha helix is an example of which level of protein structure?

secondary

21

Be able to draw the structure of Glycine, Alanine, Tyrosine and Phenylalanine

.