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 shape of a DNA molecule?

  1. AA double helix
  2. BA triple helix
  3. CA flat ring
  4. DA single straight strand
2.Easy

What does homozygous mean?

  1. AHaving two identical alleles for a gene
  2. BHaving an extra chromosome
  3. CHaving only one copy of a gene
  4. DHaving two different alleles for a gene
3.Easy

What is the main job of the cell wall in a plant cell?

  1. ATo release energy from glucose
  2. BTo control which genes are switched on in the nucleus
  3. CTo support the cell and stop it from bursting
  4. DTo make proteins for the cell
4.Medium

How does an enzyme speed up a chemical reaction?

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

A seedling is 4 cm tall at week 1, 8 cm at week 2, 12 cm at week 3 and 16 cm at week 4. If the trend continues, how tall will it be at week 6?

  1. A24 cm
  2. B32 cm
  3. C20 cm
  4. D18 cm
6.Medium

What is the difference between an antiseptic and a disinfectant?

  1. AAntiseptics are used on objects and floors; disinfectants are used on skin
  2. BAntiseptics are antibiotics; disinfectants are vaccines
  3. CAntiseptics kill all spores; disinfectants kill none
  4. DAntiseptics are used on living tissue; disinfectants are used on objects
7.Hard

In a family, a trait appears mostly in males. Affected men have daughters who are unaffected, but some of these daughters have affected sons. Which pattern fits best?

  1. AX-linked recessive
  2. BAutosomal recessive with equal sexes
  3. CAutosomal dominant
  4. DY-linked
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. ABacteria take up any radioactive substance
  2. BProtein, not DNA, is the genetic material of the virus
  3. CDNA, not protein, is the genetic material of the virus
  4. DViruses contain no DNA at all

Answer key

  1. 1. A · A double helix
  2. 2. A · Having two identical alleles for a gene
  3. 3. C · To support the cell and stop it from bursting
  4. 4. C · It lowers the activation energy
  5. 5. A · 24 cm
  6. 6. D · Antiseptics are used on living tissue; disinfectants are used on objects
  7. 7. A · X-linked recessive
  8. 8. C · DNA, not protein, is the genetic material of the virus

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