Respiration and Circulation Multiple Choice Questions and Answers 7 PDF Book Download

Respiration and circulation multiple choice questions (MCQs), respiration and circulation quiz answers, test prep 7 to learn online elementary school courses for science degree. Respiration and breathing MCQs, respiration and circulation quiz questions and answers for online elementary education degree. Learn transport in human beings, respiration and breathing test prep for elementary school teaching certification.

Learn elementary school science MCQs: transport in human beings, respiration and breathing, with choices respiratory system, circulatory system, digestion system, and nervous system for online elementary education degree. Free science study guide for online learning respiration and breathing quiz questions to attempt multiple choice questions based test.

MCQs on Respiration and Circulation Worksheets 7 PDF Book Download

MCQ: Composition of red blood cells have specialized protein called

  1. iron
  2. chlorophyll
  3. copper
  4. silver


MCQ: Transport system of blood by special organ heart constitutes

  1. circulatory system
  2. respiratory system
  3. digestion system
  4. nervous system


MCQ: Life span of red blood cells is

  1. 2 months
  2. 45 days
  3. 4 months
  4. 12 days


MCQ: Exhaled air is air which we

  1. breath in
  2. breath out
  3. transport in body
  4. use under water


MCQ: Division of windpipe is done in two

  1. bronchioles
  2. alveoli
  3. nostril
  4. bronchi