1 p5 specialist cell 261110
Post on 01-Jun-2015
814 Views
Preview:
DESCRIPTION
TRANSCRIPT
Specialised Cells
1P5: Friday 26th November
Specialised CellsNot all parts (cells) of a plant or animal are the same. Some are shaped differently to suit the jobs they do.
Plant e.g. Daffodil Animal e.g. Human
Specialised CellsDraw the following table.
Specialised cell Function Feature
Specialised Cells
DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS• Red Blood Cell
• The function of a red blood cell is to CARRY OXYGEN around our body
• Its special feature is that it has shape that gives it a LARGE SURFACE AREA
• The bigger the surface area the more oxygen that it can carry
Specialised Cells
Red Blood Cell
Specialised Cells
DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS• Nerve Cell• The function of a nerve cell is to carry NERVE
MESSAGES throughout the body• The special FEATURE a nerve cell has is its
LONG STRAND.
Specialised Cells
• Sperm Cell
•The function is to swim to the egg for FERTILISATION
•The special feature a sperm cell has is its TAIL
DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS
Specialised Cells
DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS
• White blood Cell• Its function is to FIGHT DISEASE• Its special feature is that it has chemicals inside it that
DIGEST GERMS
Specialised Cells
DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS
• Leaf Cell
• The FUNCTION of a leaf cell is to MAKE FOOD
• The special FEATURE a leaf cell has is it contains GREEN CHLOROPHYLL
Specialised Cells
DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS• Plant root cell
Feature: Root hairs provide a large surface area.
Function: To absorb water.
Specialised Cells
• Guard Cell
Feature: Sausage shaped
Function: To open and close small pores.
DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS
Specialised Cells
• Water vessels
Feature: Long tubes with hoops or spirals to add strength
Function: To carry water up from roots.
DIFFERENT CELLS DO DIFFERENT TASKSDIFFERENT CELLS DO DIFFERENT TASKS
Xylem cells
Specialised Cells
• Cells that do the same job are called
Tissue • Blood, • Skin, • Bone, • Muscle, • Nerves
Examples
Specialised Cells
Cell Function Feature
Red blood cell Carry oxygen Large surface area
Nerve Carry nerve messages Long strand
Sperm Swim to egg for fertilisation
Tail
White blood cell Fight disease Chemicals inside digest germs
Leaf Make food Contains green chlorophyll
Root Absorbs water Root hairs provide large surface area
Guard Opens and closes small pores
Sausage shaped
Water vessel Carry water from roots Long tubes with hoops and spirals to add strength
top related