Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Free Tools

Explore our collection of AI-powered tools designed to boost your productivity.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing Schools Business

Features Free Tools Pricing Schools Business

10 Questions

1 Views

Enzymes and Catalysts in Biochemistry

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the main function of enzymes in biological systems?

To consume substrates
To increase the size of metabolites
To slow down chemical reactions
To act as catalysts (correct)

How do enzymes enable chemical reactions to occur at relatively high rates?

By functioning as biological catalysts made of proteins (correct)
By consuming metabolites
By decreasing the rate of the reaction
By changing their structure after the reaction

Why can many chemical reactions not occur spontaneously or happen very slowly in cells and organisms?

Due to normal temperatures and mild aqueous conditions
Due to the high concentration of enzymes
Due to the absence of metabolites
Due to the presence of specific enzymes (correct)

What happens if an enzyme that catalyzes a reaction is not present?

The reaction does not occur (D) Signup and view all the answers

How do cells control chemical reactions involving enzymes?

By producing specific enzymes under certain conditions (D) Signup and view all the answers

What is the main difference between anabolism and catabolism?

Anabolism involves building up larger molecules from smaller ones, while catabolism involves breaking down larger molecules into simpler ones. (B) Signup and view all the answers

Which term describes the starting substance in an enzyme-catalyzed reaction?

Substrate (C) Signup and view all the answers

What is the role of the active site in an enzyme molecule?

It stabilizes the transition state of the substrate. (D) Signup and view all the answers

In what way are enzymes typically classified?

Based on the type of reaction they catalyze. (D) Signup and view all the answers

What happens during a catabolic reaction?

Complex molecules are broken down into simpler ones. (C) Signup and view all the answers