Starter quiz
Which type of microsope is shown in the image?- scanning electron microscope
- transmission electron microscope
- light microscope ✓
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- Which type of cells contain membrane bound sub-cellular structures, including a nucleus?
- prokaryotic cells only
- eukaryotic cells only ✓
- both prokaryotic and eukaryotic cells
- neither prokaryotic nor eukaryotic cells
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- Which type of cell, prokaryotic or eukaryotic, is generally smaller in size?
- prokaryotic ✓
- eukaryotic
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- If a bacterial cell has a diameter of 1.5 micrometres, how many times smaller is it compared to a eukaryotic cell with a diameter of 15 micrometres?
- 10 times ✓
- 100 times
- 1000 times
- 15 times
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- Which of the following statements about microscopes are true?
- Light microscopes have a higher resolution than electron microscopes.
- Llight microscopes have a lower resolution than electron microscopes. ✓
- Light microscopes have a higher magnification than electron microscopes.
- Light microscopes have a lower magnification than electron microscopes. ✓
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- Calculate the real size of a cell if its image size is 200 micrometres and the magnification is 400x.
- 800 micrometres
- 500 micrometres
- 80 micrometres
- 0.5 micrometres ✓
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Exit quiz
- Which scientist is known as the father of modern classification and introduced the binomial naming system?
- Carl Woese
- Charles Darwin
- Carl Linnaeus ✓
- David Attenborough
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- Starting with the largest group, sort the groups of Linnean classification into the correct order.
- 1⇔kingdom
- 2⇔phylum
- 3⇔class
- 4⇔order
- 5⇔family
- 6⇔genus
- 7⇔species
What is the binomial name for the Santiago tortoise?- Testudinidae darwini
- Reptilia Testudines
- Testudines Testudinidae
- Chelonoidis darwini ✓
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- What is the significance of Woese's contribution to classification?
- He developed the Linnaean system.
- He introduced the binomial naming system.
- He used DNA sequences to refine classification. ✓
- He classified organisms based on physical characteristics.
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- According to the three-domain system, which domain includes animals, plants, fungi, and protists?
- Eukaryota ✓
- Archaea
- Bacteria
- Prokaryota
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- Which domain contains organisms that are often extremophiles and live in extreme environments?
- Eukaryota
- Bacteria
- Archaea ✓
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Worksheet
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Video
Lesson Details
Key learning points
- Organisms are classified into groups within larger groups, from species up to kingdoms and domains
- There are domains of eukaryotes (animals, plants, fungi and protists), bacteria and archaea (both prokaryotic)
- Organisms can be classified using evidence of their macroscopic features (phenotype)
- Organisms can be classified using evidence of their and microscopic cell structures
Common misconception
Pupils may think that the modern classification system that we use today is complete.
Remind pupils why new data from experiments or observations leads to changes in models or theories.
Keywords
Species - a group of similar organisms that can breed together to produce fertile offspring
Kingdom - A division of living things in the classification system. The five kingdoms are animals, plants, fungi, protist and prokaryotes.
Domain - The three domain system of classification organises organisms into three large groups: Bacteria, Archaea and Eukaryota.
Phenotype - the physical characteristics of an organism
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