Viruses (Edexcel GCSE Biology Combined Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
Why do viruses need to infect host cells?
Why do viruses need to infect host cells?
They cannot reproduce independently
What is the main function of a virus's protein coat?
What is the main function of a virus's protein coat?
Protects genetic material
Why can viruses only infect specific types of cells?
Why can viruses only infect specific types of cells?
Complementary shape to cell receptors
What happens to the host cell at the end of the lytic pathway?
What happens to the host cell at the end of the lytic pathway?
The cell bursts (lysis)
What does a virus inject into a host cell during the lytic pathway?
What does a virus inject into a host cell during the lytic pathway?
Genetic material (DNA or RNA)
How quickly can norovirus complete the lytic cycle?
How quickly can norovirus complete the lytic cycle?
12 hours
What happens to viral DNA in the lysogenic pathway?
What happens to viral DNA in the lysogenic pathway?
Integrates into host cell's DNA
What happens as the host cell divides in the lysogenic pathway?
What happens as the host cell divides in the lysogenic pathway?
Copies viral DNA with its own DNA
What can trigger a virus to switch from lysogenic to lytic pathway?
What can trigger a virus to switch from lysogenic to lytic pathway?
Stress or environmental changes
Which pathway does norovirus use?
Which pathway does norovirus use?
Lytic pathway