What Are Enzymes Notes App | IGCSE O Level Biology Notes e-Book PDF
IGCSE O Level Biology MCQs (O Level) From Textbook

IGCSE O Level Biology Exam MCQs – Practice Test 4 (Chapter 19)

What Are Enzymes Notes Questions with Answers PDF Download – Test 4

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Download the What Are Enzymes Learning App: Substance which can alter or speed up the chemical reaction without itself being chemically unchanged is; MCQ with answers: pathology, saliva, catalyst, and influenza. Practice Soil Erosion Quiz Questions, download Kobo e-Book (Free Chapter) to master biology fundamentals.

What Are Enzymes Test Questions and Answers PDF Download: MCQ 4

MCQ 16: PH value of above 7 indicates:

  1. pure water
  2. pure enzyme
  3. pure alkaline
  4. pure acidic

MCQ 17: Substance which can alter or speed up the chemical reaction without itself being chemically unchanged is:

  1. saliva
  2. pathology
  3. catalyst
  4. influenza

MCQ 18: Denatured protein enzymes are but:

  1. more soluble
  2. low coagulation
  3. easily affected by acids and alkaline substances
  4. sparingly insoluble

MCQ 19: In order to increase the rate of reaction, the:

  1. limiting factor shall increase
  2. limiting factor shall decrease
  3. substrate concentration shall be increased
  4. enzyme concentration shall be increased

MCQ 20: Lipases helps in digestion of:

  1. lipids
  2. carbohydrates
  3. proteins
  4. liver juices

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