B2 Keeping Healthy Part 1

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  • Created by: 1i22y
  • Created on: 23-01-16 15:25

1. What do different types of white blood cells do

  • Some engulf and digest invading microorganisms and others produce antibodies which recognize and destroy invading microorganisms
  • Destroy red blood cells
  • contain hemoglobin — a red, iron-rich protein that gives blood its red color. Hemoglobin enables red blood cells to carry oxygen from your lungs to all parts of your body and to carry carbon dioxide from other parts of the body to your lungs so that
  • Carry oxygen to the heart
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2. What are the bodies external defences

  • Skin, saliva, tears and acid in the stomach
  • Hair, eyelashes and bones
  • Feet

3. What do viruses need to reproduce

  • A host cell
  • A sexual mate
  • Food
  • Cadburys chocolate

4. drugs that pass the first stage go on to be tested - how

  • test on tables
  • clinical trials - They are tested on healthy volunteers to check they are safe. The substances are then tested on people with the illness to ensure they are safe and that they work
  • tested on animals, a typical test involves giving a known amount of the substance to the animals, then monitoring them carefully for any side-effects
  • The drugs are tested using computer models and human cells grown in the laboratory

5. what is an open blind trial

  • the patient becomes blind/severely blind due to vaccination
  • when the patient and doctor both know the treatment. This type of trial happens when there is no other treatment and the patients are so ill that doctors believe they will not recover from their illnesses
  • when one group called the test group is given the new drug being trialled. the results are compared with the control group. one control group receives existing treatment the other control group receives a placebo


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