Cell biology worksheet with answers

Free printable Cell biology 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 organelle breaks down hydrogen peroxide using the enzyme catalase?

  1. APeroxisome
  2. BGolgi apparatus
  3. CRibosome
  4. DLysosome
2.Easy

What is diffusion?

  1. AMovement of particles against their concentration gradient using ATP
  2. BMovement of water only across a membrane
  3. CNet movement of particles from high to low concentration
  4. DEngulfing of particles by the cell membrane
3.Easy

A haploid cell contains:

  1. AFour sets of chromosomes
  2. BOne set of chromosomes
  3. CNo chromosomes
  4. DTwo sets of chromosomes
4.Medium

During which phase of mitosis do sister chromatids separate?

  1. AMetaphase
  2. BTelophase
  3. CProphase
  4. DAnaphase
5.Medium

What does it mean that the genetic code is "degenerate" (redundant)?

  1. AMost amino acids are coded by more than one codon
  2. BThe code differs completely between species
  3. CSome codons are never used
  4. DEach codon codes for several amino acids
6.Medium

What is the net ATP yield of glycolysis per molecule of glucose?

  1. A1 ATP
  2. B36 ATP
  3. C2 ATP
  4. D4 ATP
7.Hard

Which statement about the sodium–potassium pump is correct?

  1. AIt needs no energy
  2. BIt moves Na⁺ and K⁺ in the same direction across the membrane
  3. CIt moves 3 Na⁺ out and 2 K⁺ in for each ATP used
  4. DIt moves 2 Na⁺ out and 3 K⁺ in
8.Hard

In eukaryotic mRNA processing, splicing removes:

  1. AExons
  2. BThe 5′ cap
  3. CIntrons
  4. DThe poly-A tail

Answer key

  1. 1. A · Peroxisome
  2. 2. C · Net movement of particles from high to low concentration
  3. 3. B · One set of chromosomes
  4. 4. D · Anaphase
  5. 5. A · Most amino acids are coded by more than one codon
  6. 6. C · 2 ATP
  7. 7. C · It moves 3 Na⁺ out and 2 K⁺ in for each ATP used
  8. 8. C · Introns

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