Respiration and Circulation Multiple Choice Questions and Answers 7 PDF Download

Respiration and circulation Multiple Choice Questions and Answers (MCQs), respiration and circulation quiz answers pdf, test prep 7 to study elementary school science for online degree courses. Practice "respiration and breathing" MCQs, respiration and circulation quiz questions and answers for online elementary school. Learn transport in human beings, respiration and breathing test prep for virtual online school.

"The composition of red blood cells have specialized protein called" Multiple Choice Questions (MCQs) on respiration and circulation with choices chlorophyll, iron, copper, and silver for online elementary school. Free science study guide for online learning respiration and breathing quiz questions for online certifications.

Respiration and Circulation MCQs Quiz 7 PDF Download

MCQ: The composition of red blood cells have specialized protein called

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


MCQ: The transport system of blood by special organ heart constitutes

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


MCQ: The life span of red blood cells is

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


MCQ: Exhaled air is the air which we

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


MCQ: The division of windpipe is done in two

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