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.

New worksheetPractise online with hints

For teachers: free to print, copy and use in class. Every new worksheet has new values and its own answer key. A link to ExamProblems on your course page is appreciated.

Name: ____________________   Date: ____________

1.Easy

What are the building blocks (monomers) of DNA called?

  1. AMonosaccharides
  2. BNucleotides
  3. CAmino acids
  4. DFatty acids
2.Easy

Who proposed the double-helix model of DNA in 1953?

  1. AMendel and Darwin
  2. BWatson and Crick
  3. CMeselson and Stahl
  4. DHershey and Chase
3.Easy

Which base pairs with adenine in DNA?

  1. AUracil
  2. BGuanine
  3. CThymine
  4. DCytosine
4.Medium

Cyclin-dependent kinases (CDKs) that drive the cell cycle become active when they bind to:

  1. ACyclins
  2. BTubulins
  3. CHistones
  4. DRibosomes
5.Medium

A codon consists of:

  1. AThree nucleotides on mRNA that code for an amino acid or a stop signal
  2. BThree amino acids
  3. CA whole gene
  4. DOne nucleotide
6.Medium

Glycolysis takes place in the:

  1. AMitochondrial matrix
  2. BNucleus
  3. CInner mitochondrial membrane
  4. DCytoplasm
7.Hard

In Michaelis–Menten kinetics, what does the Km of an enzyme represent?

  1. AThe reaction rate when the substrate concentration is close to zero
  2. BThe amount of enzyme in the cell
  3. CThe maximum rate of the reaction
  4. DThe substrate concentration at which the rate is half of Vmax
8.Hard

Some antibiotics, such as tetracyclines, block bacterial protein synthesis with little effect on human cytoplasmic ribosomes. Why?

  1. AHuman ribosomes are inside the nucleus
  2. BBacterial 70S ribosomes differ in structure from eukaryotic 80S ribosomes
  3. CBacteria use DNA instead of mRNA as the template for translation on ribosomes
  4. DHuman cells do not make proteins

Answer key

  1. 1. B · Nucleotides
  2. 2. B · Watson and Crick
  3. 3. C · Thymine
  4. 4. A · Cyclins
  5. 5. A · Three nucleotides on mRNA that code for an amino acid or a stop signal
  6. 6. D · Cytoplasm
  7. 7. D · The substrate concentration at which the rate is half of Vmax
  8. 8. B · Bacterial 70S ribosomes differ in structure from eukaryotic 80S ribosomes

Full step-by-step solutions: practise this topic on examproblems.com.