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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Name: ____________________   Date: ____________

1.Easy

What is a mutation?

  1. AThe normal copying of DNA
  2. BThe splitting of a chromosome during mitosis
  3. CA change in the DNA base sequence
  4. DA change in the shape of the cell
2.Easy

Which organelle mainly makes lipids and detoxifies drugs, especially in liver cells?

  1. ANucleolus
  2. BLysosome
  3. CSmooth endoplasmic reticulum
  4. DRough endoplasmic reticulum
3.Easy

What is exocytosis?

  1. AUptake of fluid and dissolved solutes into small vesicles formed by the membrane
  2. BRelease of substances from the cell by vesicles fusing with the membrane
  3. CMovement of ions through protein pumps
  4. DBreakdown of the cell membrane
4.Medium

During which phase of mitosis do sister chromatids separate?

  1. AMetaphase
  2. BProphase
  3. CAnaphase
  4. DTelophase
5.Medium

The Golgi apparatus mainly:

  1. AReplicates DNA
  2. BBreaks down old organelles and engulfed bacteria with enzymes
  3. CModifies, sorts and packages proteins for transport
  4. DProduces ATP
6.Medium

What is the G0 phase of the cell cycle?

  1. AA phase found only in cancer cells that have stopped responding to signals
  2. BThe phase in which DNA is copied
  3. CThe final stage of mitosis
  4. DA resting state in which cells have left the cycle and stopped dividing
7.Hard

Why does colchicine arrest dividing cells in mitosis?

  1. AIt breaks down actin filaments, so cytokinesis cannot happen
  2. BIt stops tubulin polymerising, so the spindle cannot form
  3. CIt stops DNA replication in S phase
  4. DIt destroys the nuclear envelope permanently
8.Hard

Where in the cell does the electron transport chain of aerobic respiration take place?

  1. AInner mitochondrial membrane
  2. BMitochondrial matrix
  3. CCytoplasm
  4. DOuter mitochondrial membrane

Answer key

  1. 1. C · A change in the DNA base sequence
  2. 2. C · Smooth endoplasmic reticulum
  3. 3. B · Release of substances from the cell by vesicles fusing with the membrane
  4. 4. C · Anaphase
  5. 5. C · Modifies, sorts and packages proteins for transport
  6. 6. D · A resting state in which cells have left the cycle and stopped dividing
  7. 7. B · It stops tubulin polymerising, so the spindle cannot form
  8. 8. A · Inner mitochondrial membrane

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