Human Transport System Multiple Choice Questions 4 PDF Download

Practice human transport system MCQs, grade 7 online science test 4, what are white blood cells multiple choice questions and answers. What are white blood cells revision test has science worksheets, helping answer key with choices as transport oxygen, defend a body from disease, heal wounds and refresh heart of multiple choice questions (MCQ) with what are white blood cells quiz as the task of white blood cells is to for competitive exam prep, viva interview questions. Free science study guide to practice what are white blood cells quiz to attempt multiple choice questions based test.

MCQs on Human Transport System Quiz PDF Download Worksheets 4

MCQ. The task of white blood cells is to

  1. defend a body from disease
  2. transport oxygen
  3. heal wounds
  4. refresh heart


MCQ. Yellow pus in the wound is actually

  1. red blood cells
  2. plasma
  3. platelets
  4. infected white blood cells


MCQ. The deoxygenated blood is pumped to

  1. arteries
  2. lungs from heart
  3. heart from lungs
  4. veins


MCQ. The life span of red blood cells is about

  1. 100 days
  2. 200 days
  3. 300 days
  4. 400 days


MCQ. If bacteria are taken over by white blood cells, their life span

  1. decreases
  2. increases
  3. remains same
  4. may increase or decrease