Demonstrate the growth of leaf yeast on malt/starch agar (LC 2026) (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
To which kingdom does yeast belong?
To which kingdom does yeast belong?
Fungi
At what temperature does leaf yeast grow best?
At what temperature does leaf yeast grow best?
30°C
What appearance do yeast colonies have on the agar?
What appearance do yeast colonies have on the agar?
Shiny pink colonies
What does the presence of leaf yeast indicate?
What does the presence of leaf yeast indicate?
Good air quality
Why are work areas disinfected before the experiment?
Why are work areas disinfected before the experiment?
To create a sterile environment
Why is petroleum jelly smeared on the top surface of the leaf?
Why is petroleum jelly smeared on the top surface of the leaf?
To seal top surface (no fungi there)
Why don't fungi grow on the top surface of the leaf?
Why don't fungi grow on the top surface of the leaf?
Waterproof waxy cuticle
What is the purpose of the second empty agar plate?
What is the purpose of the second empty agar plate?
It serves as a control
How long are plates initially stored in the incubator at 30°C?
How long are plates initially stored in the incubator at 30°C?
24 hours
Why are the plates turned upside down after 24 hours?
Why are the plates turned upside down after 24 hours?
To reduce condensation formation
What results are observed on the control plate?
What results are observed on the control plate?
No evidence of any colonies
What results are observed on the experimental plate?
What results are observed on the experimental plate?
Pink shiny colonies