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

Which enzyme unwinds the DNA double helix and separates the two strands for copying?

  1. ALigase
  2. BLipase
  3. CAmylase
  4. DHelicase
2.Easy

What is phagocytosis?

  1. AA cell engulfing large particles such as bacteria
  2. BA cell releasing hormones by exocytosis
  3. CA cell dividing into two identical daughter cells
  4. DA cell taking in small droplets of fluid
3.Easy

Which bonds hold the two strands of a DNA double helix together?

  1. APeptide bonds between the sugars
  2. BHydrogen bonds between the bases
  3. CIonic bonds between the phosphates
  4. DDisulfide bonds between the bases
4.Medium

Why do chromosomes condense into short, thick shapes before mitosis?

  1. ASo they can be moved apart without tangling or breaking
  2. BSo that genes can be transcribed more easily
  3. CSo that they can leave through the nuclear pores
  4. DSo that they can be copied more quickly
5.Medium

How does an enzyme speed up a chemical reaction?

  1. AIt lowers the activation energy
  2. BIt raises the temperature of the cell
  3. CIt adds energy to the products
  4. DIt is used up as a reactant
6.Medium

Dolly the sheep was cloned by putting the nucleus of an adult body cell into an egg cell whose nucleus had been removed. Whose nuclear DNA did Dolly have?

  1. AAn equal mix of all three sheep
  2. BThe sheep that gave the egg cell
  3. CThe sheep that gave the body cell nucleus
  4. DThe sheep that carried the pregnancy
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. AA confounding variable
  2. BA placebo
  3. CThe dependent variable
  4. DThe control group
8.Hard

A person's body temperature starts to fall in a cold room. Which responses help bring it back up?

  1. AShivering and narrowing of blood vessels in the skin
  2. BSlower heart rate and less muscle activity
  3. CFaster breathing and more urine production
  4. DSweating and widening of blood vessels in the skin

Answer key

  1. 1. D · Helicase
  2. 2. A · A cell engulfing large particles such as bacteria
  3. 3. B · Hydrogen bonds between the bases
  4. 4. A · So they can be moved apart without tangling or breaking
  5. 5. A · It lowers the activation energy
  6. 6. C · The sheep that gave the body cell nucleus
  7. 7. A · A confounding variable
  8. 8. A · Shivering and narrowing of blood vessels in the skin

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