Metabolism and Enzymes Quiz

What is metabolism?

• The process of breaking down food

• All chemical reactions in a living organism

• The synthesis of proteins only

• The conversion of energy into heat

What are the two types of metabolism?

• Catabolism and anabolism

• Photosynthesis and respiration

• Oxidation and reduction

• Fermentation and digestion

What is catabolism?

• The storage of energy in cells

• The conversion of light energy to chemical energy

• The process of breaking down complex substances

• The process of synthesizing complex molecules

What do enzymes primarily consist of?

• Proteins

• Nucleic acids

• Lipids

• Carbohydrates

What is the role of enzymes in biochemical reactions?

• To slow down reactions

• To increase the rate of reactions

• To change the products of reactions

• To provide energy for reactions

What suffix is commonly used in the naming of enzymes?

• -ase

• -ose

• -ol

• -ine

What is the 'lock and key' hypothesis?

• Enzymes are locked in place

• Substrates fit into enzymes like keys fit into locks

• Enzymes can change shape

• Substrates are destroyed by enzymes

What is activation energy?

• Energy required for muscle contraction

• Energy stored in ATP

• Energy released during a reaction

• Energy needed to break bonds in substrates

How does temperature affect enzyme activity?

• Higher temperatures always increase activity

• Lower temperatures always decrease activity

• Enzymes have an optimum temperature for activity

• Temperature has no effect on enzyme activity

What happens to enzymes at high temperatures?

• They become more active

• They denature and lose function

• They increase in concentration

• They produce more substrates