Zusammenfassung der Ressource
Cells
- Plant
cells
- Cell wall
- Helps keep rigid shape
- Vacuole
- Holds water+ pushes cytoplasm agaisnt cell wall
- Chloroplasts
- Contain chlorophyll used in photosynthesis
- Cytoplasm
- Chemical soup
- Nucleus
- Controls chemical activity
- Cell membrane
- Controls what goes in and out
- Animal cells
- Nucleus
- Controls chemical activity
- Cell membrane
- Controls what goes in and out
- Cytoplasm
- Chemical soup
- Specialist cells
- Animal
- Nerves
- Carry messages from the brain
- Long and thin (up to 1m)
- Ciliated epithelial
- Airways clean by trapping dust and microbes
- In the oviduct they move egg along the tube
- Tiny hairs on upper surfaces
- Red blood
- Carry oxygen in blood
- No nucleus
- Bi-concave shape = bigger surface area to absorb oxygen
- Plant
- Palisade
- Extra chloroplasts to help photosynthesis
- (Mostly) on top surface of leaves
- Root hair
- No chloroplasts- do not need chlorophyll
- Enable plant to draw water from deep soil
- Reproductive cells
- Egg
- Carry female genetic info
- Join with sperm to make a new animal
- Carry a food supply until embryo is implanted
- Half the number of chromosomes
- Sperm
- Carry male genetic info
- Fertilise the egg to create new animal
- Tail for swimming+ tough head for penetrating egg