Enzymes and Movement of Substances Quiz
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What is osmosis?
A. The movement of water from an area of low water concentration to an area of high water concentration
B. The movement of water from an area of high water concentration to an area of low water concentration
C. The movement of sugar from an area of high sugar concentration to an area of low sugar concentration
D. The movement of sugar from an area of low sugar concentration to an area of high sugar concentration
What is the water concentration in a dilute solute solution?
A. High water concentration
B. Low water concentration
C. Medium water concentration
D. No water concentration
What is a catalyst?
A. A substance that slows down a reaction and is used up.
B. A substance that increases the speed of a reaction and is used up.
C. A substance that increases the speed of a reaction without being changed or used up.
D. A substance that prevents a reaction from occurring.
What is active transport?
A. The movement of substances from a high to a low concentration.
B. The movement of substances from a low to a high concentration.
C. The movement of substances along the concentration gradient.
D. The movement of substances without the use of energy.
What are proteins broken down into by protease?
A. Simple sugars
B. Glycerol
C. Fatty acids
D. Amino acids
Which process is responsible for the movement of water in and out of our cells?
A. Diffusion
B. Active transport
C. Osmosis
D. Filtration
What are enzymes classified as?
A. Chemical inhibitors
B. Biological catalysts
C. Physical barriers
D. Energy sources
What is the role of the active site in an enzyme?
A. It binds to the substrate.
B. It releases the products.
C. It changes the shape of the enzyme.
D. It deactivates the enzyme.
What is the term used to describe the mechanism where the substrate fits into the enzyme’s active site?
A. Lock and key mechanism
B. Induced fit model
C. Substrate inhibition
D. Competitive inhibition
Which enzyme breaks down carbohydrates into simple sugars?
A. Protease
B. Lipase
C. Carbohydrase
D. Amylase
What are lipids (fats) broken down into?
A. Simple sugars
B. Amino acids
C. Glycerol and fatty acids
D. Starch
At what temperature is enzyme activity in a human at its best/highest?
A. 25°C
B. 37°C
C. 50°C
D. 70°C
What are the reactants in the respiration equation?
A. Carbon Dioxide and Water
B. Oxygen and Glucose
C. Water and Glucose
D. Carbon Dioxide and Oxygen
What must the shape of the substrate match in order to fit into the enzyme?
A. The shape of the enzyme’s active site
B. The shape of the enzyme’s surface
C. The shape of the enzyme’s core
D. The shape of the enzyme’s tail
Which enzyme is responsible for breaking down fats?
A. Carbohydrase
B. Protease
C. Lipase
D. Amylase
