Could the two gram negative cultures in this investigation be differentiated by the way they grew on MAC agar? Explain your response.
Added by Robert M.
Step 1
MAC agar is a selective and differential media commonly used to differentiate between lactose fermenting (pink colonies) and non-lactose fermenting (colorless colonies) bacteria. Show more…
Show all steps
Your feedback will help us improve your experience
Nicholas Mogoi and 77 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Would the colonies produced by a pure culture appear different on the surface versus the ones growing in the agar? Why or why not?
Nicholas M.
Upon observation of the nutrient agar slant culture, you strongly suspect that the culture is contaminated. Outline the method you would follow to ascertain whether your suspicion is justified.
Suman K.
While preparing a batch of MacConkey agar, you accidentally added glucose into the medium along with other desired ingredients. What would be the impact of this error on the test? Distinction of coliforms from other enteric pathogens won't be possible. Sensitivity of the test compromised. The test shows false negatives in terms of selection of bacteria. Specificity of the test compromised. Gram-positive bacteria would grow as well because glucose is the simplest sugar and almost all bacteria utilize it. False positive results in terms of fermentation would show up in the test.
Saleem J.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD