Life Processes

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Slide 8

What are the functions of the Cell?

Cell Wall is made of cellulose – it strengthens and supports the cell

Chloroplasts, which contain Chlorophyll, absorb light energy to make food through Photosynthesis.

A Vacuole is filled with cell sap [a sugar and water solution] and it provides rigid support.

this is for PLANTS ONLY

Slide 9

What are the functions of the cell?

Cell Membrane controls what goes in and out of the cell

Cytoplasm is where all the reactions take place

A Nucleus is like the ‘’brain’’ of the cell and controls the activity of the cell.

THIS APPLIES TO BOTH PLANT AND ANIMAL CELLS

This applies to BOTH types of Cell

Slide 10

What do they look like?

ANIAMAL

PLANT

Slide 11

Additional Material for HT

HIGHER TIER

Chemical Reactions are controlled by enzymes. The cytoplasm contains special structures called Mitochondria, which is where most of the energy is released during respiration.

Slide 12

Homework

This question is taken from a past GCSE paper.

Give the function of these parts of a plant cell.

Chloroplast

Cell wall

Vacuole

Slide 13

Cells, Tissues and Organs

A group of similar cells is called a

A group of afferent tissues form a

A group of organs working together form a

Or a whole organism

Key Words:

Tissues Organ Organ System Organism

Slide 14

Palisade Cells

Palisade Cells are designed for Photosynthesis

Tall shape means a lot of surface area exposed down the side for absorbing C02

Good chance of light hitting the chloroplast before it reaches the bottom of the cell.

Slide 15

Specialist Cells

Specialist Cells have a particular functions that help them to carry out their job efficiently.

You might be asked how a particular type of cell is adapted to the job it does. You will therefore need to make notes on the following pieces of information.

Slide 16

Sperm Cell

1) The sperm cell - designed to fertilise eggs A sperm cell is very small and has a little tail which provides movement so it can swim and find an egg to fertilise Its head contains enzymes (in the vacuole) which allow it to digest its way through an egg membrane so the two nuclei can join It contains half the number of chromosomes in the nucleus - these carry genetic information from the father, which will be passed on to the offspring