WorksheetsBiomolecules Review
Total questions: 10
Worksheet time: 5mins
Carbohydrates are transported in plants mainly in the form of
starch
sucrose
glucose
fructose
Which of the following statements is true about BOTH isomers of glucose?
Both contribute to the structure of starch.
Both contribute to the structure of cellulose.
Structure 1 contributes to the structure of cellulose, and Structure II contributes to the structure of starch.
Structure 1 contributes to the structure of starch, and Structure II contributes to the structure of cellulose.
Which of the following arrangements is the correct orientation of 'heads' and 'tails' of phospholipids in a bi-layer?
Head away from water; Tail away from water
Head away from water; Tail towards water
Head towards water; Tail towards water
Head towards water; Tail away from water
Collagen exhibits a secondary level of protein structure and organization because
it contains four polypeptide chains
each chain forms a helix held by covalent bonds
each chain forms a helix held by hydrogen bonds
it is made up of repeated units of three different amino acids
This chemical structure represents a molecule of
triglyceride
tripeptide
triphosphate
trisaccharide
Which of the following BEST represents the structure of a triglyceride?
Which of the following occurs in the tertiary structure but NOT in the primary structure of a protein?
Pistia stratiotes (water lettuce) is a rosette-like plant found floating in ponds and natural waterways.
Which of the following properties of water assists the plants to float?
High cohesion
High specific heat
High latent heat of fusion
High latent heat of vaporization
Which of the following biological molecules has both hydrogen and disulphide bonds?
ATP
DNA
Insulin
Triglyceride
Which of the biological molecules forms the MAIN component of the cell membrane in animals?
I
II
III
IV
