PROTEINS

Question 1

molecules which yields amino acids upon hydrolysis

Answer 1

proteins

Question 2

those which give one amino acid only after hydrolysis

Answer 2

simple proteins

Question 3

those which give an amino acid and a non-protein group upon hydrolysis

Answer 3

conjugated proteins

Question 4

those which are derived from simple and conjugated protein

Answer 4

derived protein

Question 5

globular protein is insoluble in water and dilute salt solution

Answer 5

albumin

Question 6

globular protein is sparingly soluble in water and neutral solutions; distributed in both plant and animal tissues

Answer 6

globulins

Question 7

insoluble in water and dilute solutions; found in grains and cereals

Answer 7

glutelins

Question 8

soluble in water, salt solutions, and dilute acids; combined with nucleic acids within cells

Answer 8

histones

Question 9

fibrous protein is insoluble in all solvents; sonnective tissues and hard tissues

Answer 9

scleroproteins

Question 10

present in all chromosomes and in all living forms as a combination of protein with either DNA or RNA

Answer 10

nucleoproteins

Question 11

proteins combined with amino sugars, sugar acids, and sulfates; saliva and egg white

Answer 11

mucoprotein

Question 12

found in bones, tendons, and cartilage; less than 4% hexosamine

Answer 12

glycoproteins

Question 13

phosphoric acid joined in ester linkage to protein; found in milk and egg yolk

Answer 13

phosphoproteins

Question 14

results from short action of acids or enzymes; edestan and myosin; insoluble in water

Answer 14

proteans

Question 15

intermediate product of protein digestion; soluble in water

Answer 15

proteases

Question 16

same properties as proteases except they cannot be salted out

Answer 16

peptones

Question 17

two or more amino acids joined by a peptide linkage

Answer 17

peptides

Question 18

amino acids are linked with one another through peptide bonds

Answer 18

primary structure

Question 19

peptide chains may acquire spiral shape or may be present in a zigzag manner; coiling of peptide chains

Answer 19

secondary structure

Question 20

coiling of peptide chains is due to

Answer 20

hydrogen bonding

Question 21

twisting or folding of polypeptide chains

Answer 21

tertiary structure

Question 22

arrangement of multiple folded protein molecules in a multi-subunit complex

Answer 22

quaternary structure

Question 23

are the biological catalysts

Answer 23

enzymes

Question 24

oxygen carrier in blood

Answer 24

hemoglobin

Question 25

obtained by heating bones, skins, and tendons in water

Answer 25

gelatin