Other questions in this quiz

2. A catalyst

  • increases the rate of reaction by increasing the activation energy
  • increases the rate of reaction by reducing the activation energy
  • decreases the rate of reaction by reducing the activation energy
  • decreases the rate of reaction by increasing the activation energy

3. Analysis of a sample of DNA found that 40% of the nucleotides contained cytosine. In the same sample of DNA the percentage of nucleotides containing adenine would be

  • 10
  • 60
  • 20
  • 40

4. The maximum number of amino acids coded for by a molecule of mRNA that is 600 mononucleotides long is

  • 300
  • 200
  • 100
  • 600

5. A platelet

  • is an enzyme that converts prothrombin into thrombin
  • is a cell fragment that releases fibrinogen
  • is a cell fragment that releases thromboplastin
  • is a protein that forms an insoluble mesh to trap red blood cells

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