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

What is the final electron acceptor in aerobic respiration?

  1. AOxygen
  2. BNAD⁺
  3. CCarbon dioxide
  4. DGlucose
2.Easy

What is a mutation?

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

How do enzymes speed up chemical reactions?

  1. AThey raise the temperature of the cell
  2. BThey are used up in the reaction
  3. CThey change the reaction's final equilibrium
  4. DThey lower the activation energy
4.Medium

Gut epithelial cells take up glucose against its gradient with a sodium–glucose cotransporter. What kind of transport is this?

  1. ASecondary active transport
  2. BFacilitated diffusion
  3. CSimple diffusion
  4. DPrimary active transport
5.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. CA resting state in which cells have left the cycle and stopped dividing
  4. DThe final stage of mitosis
6.Medium

The rough endoplasmic reticulum is "rough" because it:

  1. AHas a cell wall
  2. BStores calcium only
  3. CIs studded with ribosomes
  4. DContains DNA
7.Hard

With 23 chromosome pairs, how many different chromosome combinations can independent assortment alone produce in human gametes?

  1. A23²
  2. B46
  3. C2 × 23
  4. D2²³ (about 8 million)
8.Hard

In the Hershey–Chase experiment, phages labelled with ³²P and ³⁵S infected bacteria. What was found inside the bacteria?

  1. ANeither label, because phages stay outside
  2. BMostly ³²P, showing DNA enters the cell
  3. CEqual amounts of both labels
  4. DMostly ³⁵S, showing protein enters the cell

Answer key

  1. 1. A · Oxygen
  2. 2. C · A change in the DNA base sequence
  3. 3. D · They lower the activation energy
  4. 4. A · Secondary active transport
  5. 5. C · A resting state in which cells have left the cycle and stopped dividing
  6. 6. C · Is studded with ribosomes
  7. 7. D · 2²³ (about 8 million)
  8. 8. B · Mostly ³²P, showing DNA enters the cell

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