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

  1. AHydrogen bonds between the bases
  2. BDisulfide bonds between the bases
  3. CPeptide bonds between the sugars
  4. DIonic bonds between the phosphates
2.Easy

Which list gives the main taxonomic ranks from broadest to most specific?

  1. ADomain, phylum, kingdom, order, class, genus, family, species
  2. BDomain, kingdom, phylum, class, order, family, genus, species
  3. CSpecies, genus, family, order, class, phylum, kingdom, domain
  4. DKingdom, domain, class, phylum, family, order, species, genus
3.Easy

Which four bases are found in DNA?

  1. AAdenine, thymine, glucose and cytosine
  2. BAdenine, uracil, guanine and cytosine
  3. CAdenine, thymine, guanine and cytosine
  4. DAlanine, thymine, glycine and cysteine
4.Medium

A red blood cell is placed in a very salty (hypertonic) solution. What happens?

  1. ANothing changes because salt cannot cross
  2. BWater leaves the cell and it shrinks
  3. CSalt enters the cell and it swells
  4. DWater enters the cell and it bursts
5.Medium

What does Mendel's law of segregation state?

  1. ADominant alleles are more common in a population than recessive ones
  2. BThe two alleles of a gene separate so each gamete gets only one
  3. CGenes on different chromosomes are always inherited together
  4. DEach gamete receives both alleles of every gene
6.Medium

What do nitrogen-fixing bacteria do?

  1. AThey convert nitrogen gas into compounds that plants can use
  2. BThey turn carbon dioxide into sugar
  3. CThey break down proteins into glucose
  4. DThey release nitrogen gas from dead organisms into the air
7.Hard

A single-celled organism has a nucleus, no cell wall and swims using cilia. In which group is it best placed?

  1. APlants
  2. BFungi
  3. CBacteria
  4. DProtists
8.Hard

Redi placed meat in open jars and in jars covered with gauze. Maggots appeared only on meat that flies could reach. What did this show?

  1. AMaggots come from eggs laid by flies, not from the meat itself
  2. BGauze produces chemicals that stop meat from rotting
  3. CMeat turns into maggots when exposed to air
  4. DFlies form from rotting meat, and then they lay eggs on fresh meat

Answer key

  1. 1. A · Hydrogen bonds between the bases
  2. 2. B · Domain, kingdom, phylum, class, order, family, genus, species
  3. 3. C · Adenine, thymine, guanine and cytosine
  4. 4. B · Water leaves the cell and it shrinks
  5. 5. B · The two alleles of a gene separate so each gamete gets only one
  6. 6. A · They convert nitrogen gas into compounds that plants can use
  7. 7. D · Protists
  8. 8. A · Maggots come from eggs laid by flies, not from the meat itself

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