EXAM

Question 1

At extremely low oxygen levels, important cellular processes unravel. Another intracellular protein, Hsp60, has been discovered in a wide range of prokaryotic and eukaryotic cells. This protein may bind to other proteins and prevent their unravelling. It would be reasonable to infer that Hsp60

a) Is manufactured at free ribosomes
b) Has a structure which is secondary
c) Is produced continuously by a cell
d) Is produced in equal amounts by living cells in a multicellular organism

Answer 1

a) Hsp60 is found in both prokaryotes and eukaryotes, therefore it is manufactured in free ribosomes as prokaryotes do not have ribosomes on endoplasmic reticulum.

Question 2

The term used to indicate all the proteins in an organism is:

a) Protozoa
b) Protease
c) Proteome
d) Proterozoic

Answer 2

c) Proteome

Question 3

A protein-based fibre could be constructed from repeated monomers of:

a) C3H13N4COOH
b) CH3(CH2)nCOOH
c) CxH2Oy
d) C6H5COCl

Answer 3

Proteins are made out of an amino group (NH2), carboxyl group (COOH), and then the R, variable group. Therefore it cannot be B, C or D as they all lack nitrogen. Therefore the answer must be A

Question 4

A pathway for the production of protein for these junctions is:

Answer 4

Nucleus – ribosome – endoplasmic reticulum – vesicle – Golgi apparatus

Question 5

Biomacromolecules

Answer 5

A large biological molecule

Question 6

Amino acid

Answer 6

A small molecule that is the building block of protein. All amino acids contain an amino group and a carboxylic acid group

Question 7

Proteins

Answer 7

One or more polypeptides coiled or folded into a specific shape.

Question 8

Nucleic acids

Answer 8

• Nucleotides are made up of several nucleic acids.

- They make up the structure of DNA and RNA