Macromolecules and enzymes
Quiz
•
Biology, Science
•
9th Grade
•
Easy
Wayground Content
Used 1+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
How do enzymes affect the activation energy of a reaction?
Enzymes increase the activation energy, making it harder for the reaction to occur.
Enzymes have no effect on the activation energy of a reaction.
Enzymes lower the activation energy, making it easier for the reaction to occur.
Enzymes only affect the rate of the reaction, not the activation energy.
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the role of carbohydrates in living organisms?
Carbohydrates are primarily used for DNA replication.
Carbohydrates provide energy, serve as structural components, and are involved in cell recognition.
Carbohydrates are only used for energy storage.
Carbohydrates are not essential for living organisms.
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is a lipid?
A type of carbohydrate that provides energy.
A diverse group of hydrophobic molecules, including fats, oils, and phospholipids, that store energy and make up cell membranes.
A protein that helps in muscle contraction.
A vitamin that is essential for vision.
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is the active site of an enzyme?
The part of the enzyme that determines its shape.
The specific region of an enzyme where the substrate binds and the reaction occurs.
The location where enzymes are produced in the cell.
The area of the enzyme that is not involved in the reaction.
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
How can temperature and pH affect enzyme activity?
They have no effect on enzyme activity.
They can enhance enzyme activity by increasing substrate concentration.
They can affect enzyme activity by altering the enzyme's shape and function, potentially leading to denaturation.
They can only affect enzyme activity at extreme temperatures.
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What is a substrate in the context of enzyme activity?
A product formed after an enzyme reaction.
A molecule that inhibits enzyme activity.
The reactant molecule upon which an enzyme acts.
A type of enzyme that speeds up reactions.
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What are nucleic acids?
Macromolecules that store and transmit genetic information, such as DNA and RNA.
Small molecules that provide energy to cells.
Proteins that help in the synthesis of hormones.
Lipids that form the structure of cell membranes.
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