Enzymes and Movement of Substances Quiz
Preview:
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
Which substances move in and out of our cells through diffusion?
A. Water and Glucose
B. Oxygen and Carbon Dioxide
C. Glucose and Water
D. Oxygen and Glucose
What are enzymes classified as?
A. Chemical inhibitors
B. Biological catalysts
C. Physical barriers
D. Energy sources
What is the water concentration in a concentrated solute solution?
A. High water concentration
B. Low water concentration
C. Medium water concentration
D. No water concentration
What are lipids (fats) broken down into?
A. Simple sugars
B. Amino acids
C. Glycerol and fatty acids
D. Starch
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 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 diffusion?
A. The movement of solids from high to low concentration
B. The movement of liquids and gases from an area of high concentration to an area of low concentration
C. The movement of gases from low to high concentration
D. The movement of liquids from low to high concentration
What does it mean when an enzyme denatures?
A. The enzyme becomes more active
B. The enzyme’s active site changes shape
C. The enzyme’s activity increases
D. The enzyme forms more enzyme-substrate complexes
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 are the products in the respiration equation?
A. Oxygen and Glucose
B. Water and Glucose
C. Carbon Dioxide, Water, and Energy
D. Carbon Dioxide and Oxygen
Which enzyme is responsible for breaking down fats?
A. Carbohydrase
B. Protease
C. Lipase
D. Amylase
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 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
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
Which enzyme breaks down carbohydrates into simple sugars?
A. Protease
B. Lipase
C. Carbohydrase
D. Amylase
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
Through what type of membrane does water move during osmosis?
A. Impermeable membrane
B. Semi-permeable membrane
C. Permeable membrane
D. Non-permeable membrane
What must the substrate be in relation to the enzyme’s active site?
A. Identical
B. Complementary
C. Opposite
D. Random
What is active transport?
A. The movement of substances along the concentration gradient (from high to low concentration)
B. The movement of substances against the concentration gradient (from low to high concentration)
C. The movement of substances without the need for energy
D. The movement of substances through osmosis
What happens to an enzyme when it reaches its optimum temperature and then the temperature continues to increase?
A. It becomes more active
B. It denatures and is no longer active
C. It breaks down into smaller molecules
D. It binds more tightly to substrates
What are proteins broken down into by protease?
A. Simple sugars
B. Glycerol
C. Fatty acids
D. Amino acids
Why are enzymes specific in their action?
A. Because they can bind to any substrate.
B. Because the active site is a specific shape.
C. Because they are made of proteins.
D. Because they are found in all cells.
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.
Which process is responsible for the movement of water in and out of our cells?
A. Diffusion
B. Active transport
C. Osmosis
D. Filtration
Disclaimer:
Medical Quiz should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational and educational purposes only.