CHAP 1: CELLS

​CELLS

​plant cells

​animal cells

Multiple Choice

what cell structure is found in BOTH animal and plant cells that controls what enters and leaves the cell?

• Nucleus

• cytoplasm

• cell membrane

• vacuole

Open Ended

I am made of cellulose and found only in plant cells. what am I?

​SPECIALISED CELLS

What are specialised cells?

• There are many different TYPES of cells in both animals and plants.

• Each type of cell has a different FUNCTION.

• Cells are said to be SPECIALISED to carry put their particular functions really well.

• Specialised cells have different STRUCTURES that help them. carry out their function - the cells are ADAPTED to carry out their functions well.

NEURONES

> They have no nucleus.

> They contain a red pigment called haemoglobin, which carries oxygen around the body.

> They are smaller than most other cells in the body.

> Their small structure helps them travel through capillaries, so oxygen can be delivered to every part of the body.

RED BLOOD CELLS

​> one place in the body that contains ciliated cells is the lining of the tubes leading from your mouth to lungs.

> mucus (a sticky substance) is created by other cells in this lining.

> cilia sweeps mucus up to the back of your mouth and you swallow it.

CILIATED CELLS

​SPECIALISED ANIMAL CELLS

> Used in communication within the body.

> Carries signals from one part of the body to the other.

​> Found on the outside of plant roots.

> Function - absorb water from soil.

> Each cell has a long thin extension, that allows water to move easily from the soil to the cell.

​​Root Hair Cell

​> Found in the leaves of plants.

> Function - Make food by photosynthesis.

> They have a lot more chloroplasts than other plant cells, so that the chlorophyll inside the chloroplasts is able to absorb energy from sunlight which is used in photosynthesis to make food.

​​Palisade Cell

​SPECIALISED PLANT CELLS

> A group of similar cells that all work together to carry out a specific function, is known as a tissue.

​​Tissues

> Each organ is made up of several different kinds of tissues working together.

> Organisms contain several organs such as, brain, heart, muscle, etc.

> A set of organs that all work together to carry out a specific function, is known as an organ system.

​​Organs

​CELLS, TISSUES AND ORGANS