Flashcards
Specialised Cells
Flashcards do conjunto (7)
- 1Describe the adaptations and function of erythrocytesADAPTATIONS:
Biconcave (large surface area)
No nucleus (more room for haemoglobin)
FUNCTION:
Carry oxygen in the blood - 2Describe the adaptations and function of neutrophilsADAPTATIONS:
Flexible (to engulf pathogens)
Have many lysosomes (contains digestive enzymes)
FUNCTION:
A type of white blood cell that defends against disease. It has a multi-lobed nucleus - 3Describe the adaptations and function of epithelial cellsADAPTATIONS:
Ciliated epithelial cells have cilia (wafts mucous)
Squamous epithelial cells are very thin (efficient diffusion of gases)
Some have microvilli (large surface area)
FUNCTION:
Cover the surfaces of organs, joined by interlinking cell membranes and a basement membrane.
Goblet cells produce cilia - 4Describe the adaptations of sperm cellsFlagellum (to swim to eggs)
Lots of mitochondria (provide energy)
Acrosome contains digestive enzymes (to penetrate ovum coat of the egg) - 5Describe the adaptations of palisade cellsContains many chloroplasts (to absorb a lot of sunlight for photosynthesis)
Walls are thin (CO₂ easily diffuses into cell) - 6Describe the adaptations and function of root hair cellsADAPTATIONS:
Large surface area (for absorption)
Thin, permeable cell wall (entry of water/ions)
Large amount of mitochondria (provide energy for active transport)
FUNCTIONS:
Absorb water and minerals from the soil - 7Describe the function of guard cellsFound in pairs, with a gap forming a stoma (tiny pores for gas exchange). In light, guard cells take up H₂O in vacuoles and become turgid.
Thin outer walls and thickened inner walls force them to bend outwards, forming the stomata
Informações
- Descrição
- O usuário eliminou as informações de disciplina FlashCards sobre Specialised Cells, criado por Usuário eliminado em 05-03-2018.
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- Usuário eliminado · mar 2018
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- 5 mar 2018
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- Criado por Yinka F · 30 jan 2018
- Copiado por Yinka F · 5 mar 2018
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