Enzyme Classification and Function Quiz

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

Which class of enzymes is responsible for the transfer of functional groups?

  • Lyases
  • Isomerases
  • Hydrolases
  • Transferases (correct)

What is the primary reaction type associated with oxidoreductases?

  • Isomerization
  • Oxidation-reduction (correct)
  • Joining of molecules
  • Hydrolysis

Which of the following is an example of a hydrolase enzyme?

  • Aldolase
  • Hexokinase
  • Acetyl CoA carboxylase
  • Pepsin (correct)

According to the classification system, what type of reaction do lyases catalyze?

<p>Addition or elimination of groups (C)</p> Signup and view all the answers

Which enzyme class is known for catalyzing isomerization reactions?

<p>Isomerases (B)</p> Signup and view all the answers

What role do enzymes play in the gastrointestinal tract?

<p>They break down complex molecules. (D)</p> Signup and view all the answers

Which of the following statements about enzymes is true?

<p>Enzymes are biocatalysts that speed up chemical reactions. (D)</p> Signup and view all the answers

Who first coined the term 'enzyme'?

<p>Wilhelm Ferdinand Karl Kuhne (B)</p> Signup and view all the answers

What characteristic makes enzymes sensitive to temperature changes?

<p>They are thermolabile. (A)</p> Signup and view all the answers

Which of the following best describes zymase?

<p>A mixture of enzymes isolated from yeast. (A)</p> Signup and view all the answers

Flashcards

Enzyme Classification

A system used to categorize enzymes based on the type of chemical reaction they catalyze.

Oxidoreductases

Enzymes that catalyze oxidation-reduction reactions.

Transferases

Enzymes that catalyze the transfer of a functional group from one molecule to another.

Hydrolases

Enzymes that catalyze hydrolysis reactions, breaking bonds using water.

Signup and view all the flashcards

Lyases

Enzymes that catalyze the addition or elimination of groups, forming or breaking double bonds.

Signup and view all the flashcards

Isomerases

Enzymes that catalyze the rearrangement of atoms within a molecule, converting one isomer to another.

Signup and view all the flashcards

Ligases

Enzymes that catalyze the joining of two molecules by forming a new bond.

Signup and view all the flashcards

Oxidation Reaction

A chemical reaction in which a molecule loses electrons (or gains oxygen or loses hydrogen).

Signup and view all the flashcards

Hydrolysis Reaction

A chemical reaction in which a molecule is broken down into two smaller molecules by the addition of water.

Signup and view all the flashcards

IUB Enzyme Classification

A system for classifying enzymes by the reactions they catalyze, including systematic names and EC numbers.

Signup and view all the flashcards

Enzymes

Biological catalysts that speed up chemical reactions in living organisms without being consumed in the process.

Signup and view all the flashcards

Catalysis

The process of increasing the rate of a chemical reaction by using a catalyst.

Signup and view all the flashcards

Biocatalyst

A biological catalyst, typically an enzyme.

Signup and view all the flashcards

Enzyme's function

Enzymes lower the activation energy needed for a reaction to occur, speeding up the reaction dramatically.

Signup and view all the flashcards

Protein enzymes

Most enzymes are proteins.

Signup and view all the flashcards

Ribozymes

Enzymes that are made of RNA, instead of protein.

Signup and view all the flashcards

Enzyme Structure

Enzymes have a specific 3D shape that allows them to bind to specific substrates.

Signup and view all the flashcards

Temperature sensitivity of enzymes

Enzymes are thermolabile (sensitive to temperature) and function optimally at specific temperatures.

Signup and view all the flashcards

Hydrolysis of protein

The process of breaking down protein molecules by adding water.

Signup and view all the flashcards

Gastrointestinal Tract Enzymes

Enzymes that catalyze digestion in the GI tract at body temperature (37°C).

Signup and view all the flashcards

Enzymes in Digestion

Enzymes break down large food molecules into smaller, absorbable molecules.

Signup and view all the flashcards

More Like This

Enzyme Classification Flashcards
14 questions
Enzyme Classification and Reactions
37 questions
Enzyme Overview and Nomenclature
20 questions
Use Quizgecko on...
Browser
Browser