structure and function of proteins and fats

Question 1

what is the main function of proteins in food?

Answer 1

growth and repair

Question 2

what elements are found in proteins?

Answer 2

hydrogen, oxygen, nitrogen and sulphur

Question 3

what foods contain a large amount of protein?

Answer 3

meats, eggs, nuts, seeds, spinach, and dairy

Question 4

what are amino acids?

Answer 4

building blocks used to make proteins

Question 5

what makes up an amino acid?

Answer 5

carbon, hydrogen, oxygen and nitrogen

Question 6

what does each amino acid have?

Answer 6

a different “r” group

Question 7

how many different “r” groups are there?

Answer 7

twenty one

Question 8

what letter can always be found in the chemical structure of a protein?

Answer 8

“n”

Question 9

what is a peptide?

Answer 9

string of amino acids joined together by a peptide bond

Question 10

what is a dipeptide?

Answer 10

two strings of amino acids joined together by one peptide bond

Question 11

what is a polypeptide?

Answer 11

50+ strings of amino acids joined together by peptide bonds

Question 12

what do many polypeptides make?

Answer 12

a protein

Question 13

what is a peptide bond?

Answer 13

the carboxyl group of one molecule reacting with an amino group of another molecule, releasing a molecule of water

Question 14

what are the main functions of fats in food?

Answer 14

• energy storage
• insulation