Question Detail
Question
Which of the following is explicitly mentioned as an example of a reducing agent that can be added to media to create an anaerobic environment?
Correct Answer
Option D is the correct answer.
Detailed Explanation
Page 18, under 'Anaerobic media', states 'Addition of 1% glucose, 0.1% thioglycollate, 0.1% ascorbic acid, 0.05% cysteine or red hot iron filings can render a medium reduced.'
Hint
Look for chemical compounds used to lower oxygen levels.