Proteins

Question 1

Proteins are build from

Answer 1

Long polypeptide chains (amino acid chains)

Question 2

Protein structure

Answer 2

Amine group -NH2, side group marked R, a carboxylic group -COOH, all joined by a carbon atom

Question 3

Polypeptide chain

Answer 3

When two or more aminoacids are linked together by a condensation reaction they form a polypeptide chain

Question 4

Peptide bond

Answer 4

Joins amino acids in a polypeptide chain, always joints the Carbon atom of one acid and the nitrogen atom of another

Question 5

insulin

Answer 5

a hormone that signals cells to absorb or lower glucose; the pancreas of someone with type 1 diabetes do not produce insulin

Question 6

rhodospin

Answer 6

its a pigment that absorbs light in the retina (light-sensitive region of the eye)

Question 7

collagen

Answer 7

makes up about 1/4 of the proteins in the human body; it’s a strong, elastic protein found in connective tissues

Question 8

rubisco

Answer 8

an enzyme that catalyses the reaction that fixed CO2 from the atmosphere

Question 9

structural function of protein

Answer 9

i.e help maintain cell structure - collagen

Question 10

catalysis of protein

Answer 10

enzymes, lipids

Question 11

blood clotting

Answer 11

fibrin

Question 12

transport in blood

Answer 12

haemoglobin, myoglobin

Question 13

functions of protein

Answer 13

toxins, movement, membrane transport, transport, structural, catalysis, blood clotting

Question 14

packing of DNA

Answer 14

histones

Question 15

role of condensation reaction in living organisms

Answer 15

it bonds amino acids and creates polypeptide chains which are an important compound of proteins; it creates a lot of large molecules of carbohydrates which are important such as cellulose or glycogen