IB Macromolecules: Question Preview (ID: 20906)

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Which of the following descriptions best fits the tertiary level of a protein?
a) -amino acid sequence -peptide bonds
b) -folding of a single protein -R group interactions -hydrophobic core
c) -repeating local structures -held by H bonds
d) -protein complex

Which of the following carbohydrate sets contains polysaccharides?
a) glucose, galactose, fructose
b) starch, glycogen, cellulose
c) maltose, lactose, sucrose
d) triglycerides, phospholipids, DNA

Which of the following is not a carbohydrate?
a) Glucose
b) Enzyme
c) Lactose
d) Glycogen

What is sodium used for in animal systems?
a) They are in amino acids.
b) They co-factor in some enzymes and are a component in bones.
c) They are in cytochromes and haemoglobin.
d) They help with membrane function and send nerve impulses.

Tertiary structures have hydrophobic cores?
a) True
b) False

Which of the following is not true of fibrous proteins?
a) Structural
b) Soluble in water
c) Tissue strengthening
d) In keratin

Animals store glucose in the form of
a) Glycogen
b) Cellulose
c) Lactose
d) Galactose

When forming macromolecules, what bond joins two amino acids?
a) Covalent
b) Hydrogen
c) Peptide
d) Ionic polar

What type of reaction joins two sub-units together (in macromolecules)?
a) Hydrolysis
b) Dehydration synthesis
c) Denaturation
d) Catalyzed

Where can you find disulphide bridges in a protein?
a) Primary and secondary structures
b) Primary and tertiary structures
c) Secondary and tertiary structures
d) Quaternary and tertiary

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