IB Biology IIB Cumulative Review Quiz (OPTIONAL)

The process of breaking down a glucose molecule to release energy is called ___________.

• Glycogenolysis

• Gluconeogenesis

• Glycolysis

• Hydrolysis

A competitive inhibitor

• binds to the allosteric site, blocking the substrate

• binds to the active site, blocking the substrate

• has a different shape than the enzyme

• lowers the activation energy of a reaction

Enzymes are useful for chemical reactions because they ________________________________________.

• increase the activation energy

• lower the activation energy

• decrease the rate of reaction

• increase inhibition

The diagram shows the structure of palmitic acid. What type of fatty acid is palmitic acid?

• it is monosaturated

• it is polyunsaturated

• it is saturated

• it is a trans-fatty acid

What is a role of cholesterol in animal cells?

• it increases body fat

• it controls membrane fluidity

• it lines the inner wall of capillaries

• it is a constituent of bile

Which molecule is a sugar?

• 
• 
• 
• 

Which described these molecules correctly?

• I: ribose II: amino acid

• I: glucose II: amino acid

• I: ribose II: fatty acid

• I: glucose II: fatty acid

A permanent change to the shape of a protein caused by the breaking of stabilizing bonds (h bonds) and interactions between R groups of their amino acids.

• Denaturation
• Dipeptide
• Condensation
• Collagen

The enzyme that catalyses the first step of carbon fixation in photosynthesis

• spider silk
• Rhodopsin
• Rubisco 
• Proteome

A covalent bond that joins amino acids, at the carboxyl group of one amino acid to the amino group of the other amino acid, with the release of a molecule of water.

• Ionic Bond
• Glycosidic bond
• Peptide bond
• Ester bond