Biology Topic Practice

Culturing Microorganisms Practical

This required practical involves growing bacteria on agar plates to test the effectiveness of antibiotics.

Why do we incubate plates at 25°C in schools?

What is Culturing Microorganisms Practical?

"Culturing microorganisms is the process of growing bacteria or other microbes in a controlled environment like a petri dish."

Question 1

Which term correctly completes this GCSE Biology equation or calculation statement? A ____ is the total of results ÷ number of results

Question 2

Which term correctly completes this GCSE Biology equation or calculation statement? ____ change = (final − initial) ÷ initial × 100

Question 3

Choose the correct option to complete the statement. Biuret test turns ____ if protein is present

Question 4

Which answer best completes the statement? Control variables are kept the same for a ____ test

Aseptic Technique

Sterilise equipment (e.g. heating inoculating loop) to prevent contamination.

Secure the lid with tape (not all the way around) to allow oxygen.

Storage at 25°C prevents the growth of dangerous human pathogens.

Exam Tip

Aseptic technique means "without germs"; it ensures you only grow the bacteria you intended.

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