Wilkins X-ray diffraction showed the diameter of the DNA helix as

  1. 10A
  2. 20A
  3. 30A
  4. 40A

Potato is a modified form (outgrowth) of:

  1. Root
  2. Stem
  3. Fruit
  4. Leaf

Ordinary table salt is sodium chloride. What is baking soda?

  1. Potassium chloride
  2. Potassium carbonate
  3. Potassium hydroxide
  4. Sodium bicarbonate

Which of the following is not part of the scientific process?

  1. making predictions
  2. asking questions
  3. using creative insight
  4. proving theories are true

Darwin explained his theory of evolution in a book called

  1. On the Origin of Species
  2. The Principles of Population
  3. Survival of the Fittest
  4. Around the World in Eighty Days