Cells

Lab skills lesson 4 – introduction to cell model homework

LO-

To review what you know about cells.

To name parts of an animal cell.

To name parts of a plant cell.

To state the function of the parts of an

animal and a plant cell.

To state the differences between animal

and plant cells.

Video (start at 3:40 mins)

Keywords

cell

Cell surface membrane

Cytoplasm

Nucleus

Cell wall

Cell vacuole

Chloroplast

chlorophyll

What are living things made of?

Cells work together to carry out the seven life processes that are needed for an organism to stay alive.

Other organisms are multicellular – they are made up of many types of cells. Can you think of some examples of unicellular and multicellular organisms?

Some organisms are unicellular – they are made up of only one cell.

Cells are the building blocks of life – they come in all shapes and sizes.

A section through an animal cell:

cell membrane

cytoplasm

nucleus

DNA

Section through a plant cell

cell membrane

Nucleus contains DNA

cytoplasm

chloroplast

large sap vacuole

cellulose cell wall

What is a cell?Animal and plant cells come in different shapes and sizes, but they all have three basic features.

Plant cells also have some extra features that make them different to animal cells.

cell membrane

cytoplasm

nucleus

animal cell plant cellMost cells have three basic parts: the nucleus, cytoplasm and cell membrane. They may also contain other small structures or organelles, that perform specific jobs.

Comparing animal and plant cells

Found in both animal and plant cells

Found only in plant cells

cell membrane cellulose cell wall

nucleus large sap vacuole

cytoplasm chloroplast

The parts of a typical animal cell

The parts of a typical plant cell

Functions of the organelles

Organelle Function

Cell surface membrane

Controls what goes in and out of the cell.Keeps the cell together.

Cytoplasm Jelly-like substance.Where the cell’s chemical reactions take place.

Nucleus Contains the DNA.Controls the cell.

Cell wall Supports the cell.Made out of cellulose.

Cell vacuole Contains cell sap.Helps support the cell

Chloroplast Contain chlorophyll, a green pigment.Make the plants’ food by photosynthesis.

Specialised cells

Different cells have different functions.

The structure of the specialised cells relates

to their function.

Clip

Cell clip

Looking at cells