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Course: Edexcel International GCSE Biology 4BI1
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Edexcel International GCSE Biology 4BI1

1. The Nature & Variety of Living Organisms

0/2 Dr Dabour Hub Science Diagram and Course Material

2. Structure & Functions in Living Organisms

0/31 Dr Dabour Hub Science Diagram and Course Material

3. Reproduction & Inheritance

0/6 Dr Dabour Hub Science Diagram and Course Material

4. Ecology & the Environment

0/11 Dr Dabour Hub Science Diagram and Course Material

5. Use of Biological Resources

0/11 Dr Dabour Hub Science Diagram and Course Material
Quiz

Biological Molecules – Check yourself

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Biological Molecules Edexcel O Level Linear Biology check yourself quiz: free practice for Edexcel Linear – OL. Work through this Biological Molecules Edexcel O Level Linear Biology check yourself quiz and get instant feedback on every answer. If you get stuck, review the 2c Biological molecules — Notes lesson. More practice: Edexcel Linear – OL — all units. Syllabus: Pearson Edexcel International GCSEs.

  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
Start Quiz
1.
Which reagent tests for protein?
Iodine
Benedict's
Biuret
Ethanol
2.
What are proteins made from?
Amino acids
Glucose
Glycerol and fatty acids
Nucleotides only
3.
A positive Benedict's test for glucose needs
no heating
heating in a water bath
adding ethanol
adding water only
4.
What happens to an enzyme at a very high temperature?
It works faster forever
It becomes a substrate
Nothing
Its active site changes shape and it is denatured
5.
Which statement best describes Active site?
When an enzyme's active site changes shape permanently, so the substrate no longer fits.
A polymer made of amino acids joined together, containing C, H, O and N.
A fat or oil made of glycerol and three fatty acids.
The region of an enzyme with a specific shape into which the substrate fits.
6.
Which statement best describes Protein?
A molecule made of carbon, hydrogen and oxygen, e.g. glucose, starch and glycogen.
The molecule an enzyme acts on.
A polymer made of amino acids joined together, containing C, H, O and N.
When an enzyme's active site changes shape permanently, so the substrate no longer fits.
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Part of 2. Structure & Functions in Living Organisms — see every lesson and quiz in this unit.
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