Complete the below chart based on the image. .20 44 2. 20 PAREM. BASE A d ARAS Colony Color net Lactose Fermentation + or -

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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**Image Transcription for Educational Website: MacConkey Agar Results**

**Instructions:** Complete the below chart based on the image of a MacConkey agar plate.

**Colony Color:**
- Pink/red

**Lactose Fermentation + or -:**
- Positive (+)

**Explanation:**

The MacConkey agar plate shown in the image displays bacterial colonies that are primarily pink to red in color. This coloration indicates that the bacteria present are capable of fermenting lactose. MacConkey agar is a selective and differential culture medium designed to isolate gram-negative enteric bacteria and differentiate them based on lactose fermentation. Lactose fermenters, such as Escherichia coli, produce acid from lactose, leading to a pink/red coloration of the colonies, while non-fermenters remain colorless or appear pale.
Transcribed Image Text:**Image Transcription for Educational Website: MacConkey Agar Results** **Instructions:** Complete the below chart based on the image of a MacConkey agar plate. **Colony Color:** - Pink/red **Lactose Fermentation + or -:** - Positive (+) **Explanation:** The MacConkey agar plate shown in the image displays bacterial colonies that are primarily pink to red in color. This coloration indicates that the bacteria present are capable of fermenting lactose. MacConkey agar is a selective and differential culture medium designed to isolate gram-negative enteric bacteria and differentiate them based on lactose fermentation. Lactose fermenters, such as Escherichia coli, produce acid from lactose, leading to a pink/red coloration of the colonies, while non-fermenters remain colorless or appear pale.
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