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MERLOT II


    

Peer Review


Peptidoglycan bacteria

 

Ratings

Overall Rating:

3.5 stars
Content Quality: 3.25 stars
Effectiveness: 3 stars
Ease of Use: 4.25 starsstar
Reviewed: Dec 17, 2012 by Biology Editorial Board
Overview: This was a short video of the peptidoglycan layer of bacterial cell wall.The depiction of the bacteria was wonderful and really highlighted the differences between the peptidoglycan layers
Learning Goals: To depict all the parts of the peptidoglycan layer and its function in the cell wall of bacteria.
Target Student Population: College students
Prerequisite Knowledge or Skills: Biology and understanding the differences between gram positive vs. gram negative.
Type of Material: YouTube video
Recommended Uses: Microbiology classes before the students learn about gram stain and why the cells look different after gram staining.
Technical Requirements: Flash player is required to view the video

Evaluation and Observation

Content Quality

Rating: 3.25 stars
Strengths:
  • Video is accurate and straightforward
  • The material is clearly laid out
  • Graphics are of good quality
  • Great depiction of what the outer membrane looks like
Concerns:
  • A bit more of an introduction might be helpful to contextualize the material
  • Wish it showed the nag nam wall and the major differences between gram positive and negative cells.
  • Also wished they talked about why its important to know the differences between the two different types of gram bacteria

Potential Effectiveness as a Teaching Tool

Rating: 3 stars
Strengths:
  • Promotes conceptual understanding
  • Appropriate for lower level courses
  • Nice supplement to lecture material
  • Showed the flow of the cell and where the peptidoglycan layer was located. Would be great to show before a lab on gram staining or during a talk about the cell wall but would have to talk about other parts of the cell as well (nag nam ect.)
Concerns:
  • Wished it was longer and talked about all the parts of the cell membrane also wished it compared gram neg to gram positive in a little more depth.

  • Ease of Use for Both Students and Faculty

    Rating: 4.25 stars
    Strengths:
    • Found no defective links or major bugs.
    • Animations loaded quickly and ran smoothly
    • Easy to control animation to allow for teaching points and discussion
    Concerns:
    • None at the time of this review

    Other Issues and Comments: The video may have been longer but was cut off in the middle