Make sure you have understood everything in this section (Lessons B14, B15, and B16).
Use the Self-Check below, and the Self-Check & Lesson Review Tips to guide your learning.
This is also a good time to visit your Section 4 Checklist to make sure you have completed all the recommended learning activities.

Unit B Section 4 Self-Check

Instructions


Complete the following 6 steps. Don't skip steps – if you do them in order, you will confirm your understanding of this section and create a study bank for the future.

  1. DOWNLOAD the self-check quiz by clicking here.

  2. ANSWER all the questions on the downloaded quiz in the spaces provided. Think carefully before typing your answers. Review the lessons of this section if you need to. Save your quiz when you are done.

  3. COMPARE your answers with the suggested "Self-Check Quiz Answers" below. WAIT! You didn't skip step 2, did you? It's very important to carefully write out your own answers before checking the suggested answers.

  4. REVISE your quiz answers if you need to. If you answered all the questions correctly, you can skip this step. Revise means to change, fix, and add extra notes if you need to. This quiz is NOT FOR MARKS, so it is perfectly OK to correct any mistakes you made. This will make your self-check quiz an excellent study tool you can use later.

  5. SAVE your quiz to a folder on your computer, or to your Private Files. That way you will know where it is for later studying.

  6. CHECK with your teacher if you need to. If after completing all these steps you are still not sure about the questions or your answers, you should ask for more feedback from your teacher. To do this, post in the Course Questions Forum, or send your teacher an email. In either case, attach your completed quiz and ask; "Can you look at this quiz and give me some feedback please?" They will be happy to help you!

Be a Self-Check

Superhero!



Self-Check Quiz Answers

Click each of the suggested answers below, and carefully compare your answers to the suggested answers.

If you have not done the quiz yet – STOP – and go back to step 1 above. Do not look at the answers without first trying the questions.

Medical researchers figure out the cause of diseases. They run experiments to find treatments and cures for diseases.
One example of how medical research has helped improve human health is the discovery of vaccines. Edward Jenner discovered vaccines in the 1700s, by observing that cowpox-infected people did not catch the more deadly smallpox disease. He injected cowpox into people and later exposed them to smallpox. Jenner found that  cowpox injections protected people from getting smallpox.
There are several examples of diseases that are not caused by bacteria or viruses. For example, bronchitis is the irritation of lungs, which can be caused by small particles in the air. Atherosclerosis is the narrowing of arteries, caused by a high cholesterol diet. Melanoma cancer is caused by too much exposure to UV light from the sun and tanning beds.
Fatty foods contain cholesterol, which narrows and blocks arteries. Narrow arteries increase blood pressure, which weakens the artery walls. If arteries leading to the heart become completely blocked by cholesterol, a heart attack can occur. The heart muscle cannot move properly and is damaged, because not enough oxygen is reaching the heart muscle cells.
Exercising regularly and eating a healthy balanced diet are two things that increase a person’s chances of staying healthy throughout life.