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AQA AS Biology Unit 1 Flashcards
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- 1Stages in Phagocytosis1. Phagocyte recognises the pathogen
2. cytoplasm flows around, engulfing the pathogen
3. pathogen is taken into the phagocyte in a phagosome
4. lysosomes move towards the phagosome
5. lysosomes fuse with the phagosome, releasing enzymes
6. enzymes digest the pathogen - 2Why are vaccines effective?They stimulate the development of memory cells
- 3What does cholera bacteria do?the toxin causes chloride ions to move into the lumen
this causes the water potential to drop and water moves out by osmosis - 4Proteinscontain only CHONS
contain H-bonds within the molecule
are polymers - 5Polysaccharidescontain CHO only
do not have H bonds within the molecule
are polymers - 6Triglyceridescontain CHOP only
do not have H bonds within the molecule
are not polymers - 7Phospholipidscontain CHOP only
do not have H bonds within the molecule
are not polymers
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- Fichas sobre AQA AS Biology Unit 1 Flashcards, creado por jamie_m el 24/02/2015.
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