Edexcel IGCSE Biology 1.4 Pathogens Questions
Compare viruses with cells and explain why viruses depend on host cells to reproduce.
- Syllabus
- First assessment 2019
- Course
- Biology 4BI1
Exam points
- Classify pathogens as bacteria, fungi, protoctists or viruses and pair each type with a matching disease.
- Compare viruses with cells: viruses are non-cellular particles with a protein coat and either DNA or RNA.
- Explain that viruses are non-living and reproduce only inside host cells.
Edexcel IGCSE Biology 1.4 Pathogens Questions question 1
[Maximum number: 1]
Yeast cells can be genetically modified to produce the proteins found on the outside of viruses.
Give a reason why viruses are not considered to be living organisms.
An answer that makes reference to one of the following:
- (viruses) do not grow
- (viruses) do not respire
- (viruses) are not sensitive / have internal control / eq
- (viruses) do not move
- (viruses) do not excrete
- (viruses) do not reproduce (independently) / need a host to reproduce / eq
- (viruses) do not feed / have a nutritional need / eq
Allow do not carry out life processes / do not have all the characteristics of life /do not have MRSGREN(C)
Ignore need another living organisms / host to live / survive
Ignore need to live inside another cell
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