Biology for nursing entrance exams worksheet with answers

Free printable Biology for nursing entrance exams worksheet: 8 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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1.Easy

What is the active site of an enzyme?

  1. AThe region where the substrate binds
  2. BThe product formed by the reaction
  3. CThe part of the cell where the enzyme is made
  4. DThe gene that codes for the enzyme
2.Easy

What does the polymerase chain reaction (PCR) do?

  1. AIt cuts DNA at specific sequences
  2. BIt turns RNA into protein
  3. CIt separates proteins by their charge
  4. DIt makes many copies of a piece of DNA
3.Easy

What is a gene?

  1. AA complete set of all the chromosomes of a cell
  2. BA protein that copies DNA before cell division
  3. CA type of cell that carries hereditary traits
  4. DA section of DNA that codes for a product such as a protein
4.Medium

Why does a very high temperature stop most enzymes from working?

  1. AThe enzyme moves too slowly to meet the substrate
  2. BThe substrate turns into a different enzyme
  3. CHeat makes the enzyme divide into amino acids instantly
  4. DThe enzyme is denatured: its active site changes shape
5.Medium

A student's hypothesis is "Salt water slows the growth of bean seedlings." Which is a prediction based on it?

  1. ABean seedlings need sunlight and water to grow well
  2. BSeedlings given salt water will grow less than those given plain water
  3. CSalt water is made of sodium chloride and water
  4. DSeedlings given plain water will die within a week
6.Medium

Which DNA bases are purines?

  1. AAdenine and guanine
  2. BCytosine and thymine
  3. CAdenine and thymine
  4. DCytosine and guanine
7.Hard

A study finds that coffee drinkers have more lung cancer. Later it is found that coffee drinkers in the study also smoked more. What is smoking in this study?

  1. AThe dependent variable
  2. BThe control group
  3. CA confounding variable
  4. DA placebo
8.Hard

In the Hershey–Chase experiment, viruses were labelled with radioactive phosphorus in their DNA or radioactive sulfur in their protein. Only the phosphorus entered the infected bacteria. What did this show?

  1. ADNA, not protein, is the genetic material of the virus
  2. BViruses contain no DNA at all
  3. CProtein, not DNA, is the genetic material of the virus
  4. DBacteria take up any radioactive substance

Answer key

  1. 1. A · The region where the substrate binds
  2. 2. D · It makes many copies of a piece of DNA
  3. 3. D · A section of DNA that codes for a product such as a protein
  4. 4. D · The enzyme is denatured: its active site changes shape
  5. 5. B · Seedlings given salt water will grow less than those given plain water
  6. 6. A · Adenine and guanine
  7. 7. C · A confounding variable
  8. 8. A · DNA, not protein, is the genetic material of the virus

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