jfj_729
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#1
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#1
1) Is cell mediated immunity a non-specific or specific immune response?
2) What's the difference between pathogenic and parasitic protists?
3) If toxins weren't produced as the by-product of bacteria, would they still be harmful ?
4) What is the difference between mechanical and physical defences?
Last edited by jfj_729; 7 months ago
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goldensunset28
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1. Cell-mediated is specific immunity.
2. Not quite sure, since protists are a type of pathogen?
3. As far as I know, toxins are always harmful - just to different extents.
4. If you mean mechanical as in physical defences/barriers - they are non-specific, like skin being a barrier, cilia in the lungs; chemical would be like low pH of stomach destroying pathogens.

Hope this is useful.
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jfj_729
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(Original post by goldensunset28)
1. Cell-mediated is specific immunity.
2. Not quite sure, since protists are a type of pathogen?
3. As far as I know, toxins are always harmful - just to different extents.
4. If you mean mechanical as in physical defences/barriers - they are non-specific, like skin being a barrier, cilia in the lungs; chemical would be like low pH of stomach destroying pathogens.

Hope this is useful.
yes it was thanks so much.
However for q3 I was referring to whether the bacteria would still be harmful if they didn't produce toxins?
thanks again .
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goldensunset28
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(Original post by jfj_729)
yes it was thanks so much.
However for q3 I was referring to whether the bacteria would still be harmful if they didn't produce toxins?
thanks again .
Glad to hear it
Ah I understand. Unless bacteria have other mechanisms of damage, that i don't know of, then no, the bacteria would not be harmful. There are many good bacteria (think probiotics) and bacteria that don't really do much at all.
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jfj_729
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(Original post by goldensunset28)
Glad to hear it
Ah I understand. Unless bacteria have other mechanisms of damage, that i don't know of, then no, the bacteria would not be harmful. There are many good bacteria (think probiotics) and bacteria that don't really do much at all.
oh okay i see..thanks again
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