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

When human muscle cells lack oxygen, pyruvate is converted into:

  1. ALactate
  2. BGlucose
  3. CAcetyl-CoA
  4. DEthanol
2.Easy

Which organelle carries out photosynthesis?

  1. AChloroplast
  2. BMitochondrion
  3. CNucleus
  4. DGolgi apparatus
3.Easy

Which molecule brings amino acids to the ribosome during translation?

  1. AMessenger RNA (mRNA)
  2. BRibosomal RNA (rRNA)
  3. CDNA polymerase
  4. DTransfer RNA (tRNA)
4.Medium

Apoptosis is:

  1. ACell fusion
  2. BProgrammed cell death
  3. CCell growth
  4. DUncontrolled cell division
5.Medium

What are aquaporins?

  1. AReceptors for water-soluble hormones
  2. BChannel proteins that let water cross membranes quickly
  3. CEnzymes that split water into hydrogen and oxygen in membranes
  4. DPumps that move sodium out of cells
6.Medium

Which enzyme unwinds the DNA double helix during replication?

  1. ADNA ligase
  2. BDNA polymerase
  3. CPrimase
  4. DHelicase
7.Hard

Which checkpoint ensures all chromosomes are attached to the spindle before anaphase begins?

  1. AThe spindle assembly (metaphase) checkpoint
  2. BThe S-phase checkpoint
  3. CThe G2/M checkpoint
  4. DThe G1/S checkpoint
8.Hard

The endosymbiotic theory is supported by the fact that mitochondria:

  1. AAre made in the nucleus
  2. BContain chlorophyll
  3. CHave no membranes
  4. DHave their own circular DNA and 70S-like ribosomes

Answer key

  1. 1. A · Lactate
  2. 2. A · Chloroplast
  3. 3. D · Transfer RNA (tRNA)
  4. 4. B · Programmed cell death
  5. 5. B · Channel proteins that let water cross membranes quickly
  6. 6. D · Helicase
  7. 7. A · The spindle assembly (metaphase) checkpoint
  8. 8. D · Have their own circular DNA and 70S-like ribosomes

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