Investigating Selection (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does directional selection favour in a population?
What does directional selection favour in a population?
Individuals with extreme characteristics
Why do resistant bacteria increase in frequency after antibiotic exposure?
Why do resistant bacteria increase in frequency after antibiotic exposure?
They reproduce without competition
Which type of selection favours characteristics near the population average?
Which type of selection favours characteristics near the population average?
Stabilising selection
Why do very small babies have reduced survival in human populations?
Why do very small babies have reduced survival in human populations?
They struggle with temperature regulation
What does a larger inhibition zone indicate in antibiotic testing?
What does a larger inhibition zone indicate in antibiotic testing?
Stronger bacterial inhibition
What is used as a negative control disc in antibiotic testing?
What is used as a negative control disc in antibiotic testing?
A disc soaked only in sterile water
At what temperature should agar plates be incubated when testing antibiotics?
At what temperature should agar plates be incubated when testing antibiotics?
25°C
What is the main purpose of aseptic techniques?
What is the main purpose of aseptic techniques?
Prevent contamination by unwanted microbes
How should glassware be sterilised in bacterial investigations?
How should glassware be sterilised in bacterial investigations?
Using autoclave with high pressure steam
If rabbit fur length increased from 21mm to 24mm during cold winters, what selection occurred?
If rabbit fur length increased from 21mm to 24mm during cold winters, what selection occurred?
Directional selection