Effect of pH on beetroot cell membrane permeability

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Discussion Overview

The discussion revolves around designing an experiment to investigate how pH affects the permeability of beetroot cell membranes, focusing on the diffusion of pigments like betalain. Participants share ideas, suggestions, and challenges related to the experiment design and related concepts.

Discussion Character

  • Homework-related, Exploratory, Technical explanation

Main Points Raised

  • One participant seeks guidance on designing an experiment to assess the effect of pH on beetroot cell membrane permeability.
  • Another participant inquires about the terminology for substances that change color with varying pH levels.
  • Some participants suggest that the original poster should conduct their own research and effort, implying that the task is straightforward.
  • One participant mentions that the pH level influences the pigment of beetroot, noting that high acidity can damage membrane proteins, leading to pigment diffusion.
  • A suggestion is made for the original poster to formulate a hypothesis based on their current knowledge before seeking further assistance.
  • Another participant points out that various experiments and reports on this topic are readily available online, encouraging independent research.

Areas of Agreement / Disagreement

Participants generally agree that the original poster should engage in independent research and effort. However, there is no consensus on specific experimental designs or hypotheses, and multiple viewpoints on how to approach the task are present.

Contextual Notes

Some limitations include the lack of specific experimental details, assumptions about prior knowledge, and the varying levels of guidance offered by participants.

Who May Find This Useful

Students studying biology or chemistry at the AS level, particularly those interested in experimental design related to cell biology and membrane permeability.

mfnite
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im meant to design an experiment (at AS level) and perform it to see how the pH can affect beetroot cell membrane permeability. i don't know where to start. anyone have any experiments??

thanks :biggrin:
 
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i need to know the name given to substances that undergo a colour change when exposed to different pH's?
 
I think you need to do your own homework. This is really easy stuff. I mean if you took 5 seconds and even Googled it, you would be much farther ahead then you are here, waiting for people to give you the answers.
 
I'm actually having the do design the same experiment myself! I recommend you get some textbooks and read up about it and google it also.. I will give u some hints.

The level of pH affects the pigment of the beetroot, the dye in the beetroot (betalain) diffuses out of the cell when the membrane proteins are damaged due to high acidic level of pH.
 
Why don't you start out by telling us what you DO know so far, and what you predict you will find? In other words, start by formulating an hypothesis (we can help you refine it, but you should put the effort into starting it), and then work toward an experiment that will test your hypothesis. Until you show us some effort on your part, we cannot offer any help.
 
there are so various experiments/reports of this investigation easily found on the internet.
try putting in the effort and do a little research first
 

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