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School Biology: Cell specialisation 8. Recognising specialised cell features

Cell specialisation: 8. Recognising specialised cell features

Doc Brown's GCSE level Biology exam study revision notes

There are various sections to work through, after 1 they can be read and studied in any order.

Sub-index for notes on stem cells, cell differentiation and cell specialisation

(8) Some basic examples of specialised cells and their features you need to be able to recognise

specialised cells and their function

Cell type and function

Cell 1: A ciliated cell - the hairs can move material e.g. throat tissue cells move mucous along.

Cell 2: A plant cell - unlike animal cells, they have a cell wall as well as a membrane, plus chloroplasts for photosynthesis.

Cell 3: A red blood cell - contains the haemoglobin molecule that combines with oxygen, transported for respiration.

Cell 4: A female egg cell (ovum) - carrier of the female derived genes, lots of mitochondria.

Cell 5: A male sperm cell - carrier of the male derived genes

Cell 6: A plant root hair cell - by which plants absorb water and nutrients (e.g. mineral ions from the soil)

Cell features

L: Mitochondria, that power the cell chemistry from aerobic respiration.

N: The green chloroplasts, large organelles containing chlorophyll to catalyse photosynthesis.

O: The cilia are flexible hair-like structures

P: The cell wall of plants cells.

R: The cell membrane that controls what enters and exits the cells.

T: Vacuole

W: The cell nucleus that controls most of the cells activities.

Z: The cell cytoplasm

Summary of learning objectives and key words or phrases

Know how to draw-sketch and describe the main features of some specialised cells and their features you need to be able to recognise.



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