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IGCSE O Level Biology MCQs – Practice Test 7 (Chapter 19)

What Are Enzymes Quiz with Answers PDF Download – Test 7

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Learn What Are Enzymes Quiz Questions and Answers PDF to review biology chapters. Download the What Are Enzymes Quiz PDF e-Book, Ch. 19-7 to study IGCSE O Level Biology Course. Practice Specifity of Enzymes Quiz, What Are Enzymes MCQ questions and answers PDF to review biology chapters. Download the IGCSE O Level Biology Study App: Free What Are Enzymes Quiz App to study factors affecting enzymes, digestion: enzyme catalyzed process career test to optimize biology learning.

Free "IGCSE O Level Biology Study" App Download (iOS & Android) with MCQ: Salivary and pancreatic amylase help digest; with answers: starch, proteins, fats, and minerals. Study Causes of Pollution: Biology Quiz Questions, download Google Book (Free Chapter) to review biology chapters.

What Are Enzymes Exam Questions and Answers PDF Download: Test 7

MCQ 31: Salivary and pancreatic amylase help digest:

  1. proteins
  2. starch
  3. fats
  4. minerals

MCQ 32: At a pH 7 to 9, the activity of amylase:

  1. stops
  2. slows
  3. expedites
  4. ends

MCQ 33: Binding of enzyme and substrate on active site is explained through:

  1. hide and seek hypothesis
  2. lock and hide hypothesis
  3. lock and run hypothesis
  4. lock and key hypothesis

MCQ 34: In fish, the large molecules are normally made up of:

  1. proteins and fats
  2. Proteins and carbohydrates
  3. Minerals and proteins
  4. Minerals and Fats

MCQ 35: Using manganese oxide as a catalyst, in heating potassium chlorate (KClO3), manganese oxide (MnxOy):

  1. evaporates
  2. melts
  3. remains unchanged
  4. becomes magnesium carbonate

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