Cells

• Biology
• Further Education (Key Stage 5)

Cells

Prokaryote vs eukaryote

Mitochondria

Respiration takes place here. Generating energy for cellular activities.

Nucleus

Controls the functions of the cell. Contains the D.N.A

Cytoplasm

Where cellular reactions take place. 

Ribosomes

This is the site of protein synthesis.

Cell membrane

This controls the movement of substances in and out of the cell.

Cell wall

This provides structure and protection for the cell. Present in plant and bacterial cells.

Plasmid

This is an additonal circular piece of DNA that can transfer genetic material from one cell to another. 

String of DNA

DNA is not contained in a nucleus but is wound in a loop. 

Match the labels to their parts

Flagella

Cell wall

Cell membrane

Cytoplasm

Capsule

Free DNA

Plasmid

Structure

Function

Controls what enters and leaves the cell.

Contains DNA and controls the cell processes.

The site of respiration.

The site of chemical reactions in the cell.

Protein synthesis (making proteins).

Storing cell sap and keeping the cell rigid.

The site of photosynthesis. Contains chlorophyll.

Protects and supports the cell.

Cell membrane

Chloroplast

Ribosome

Cell wall

Vacuole

Mitochondria

Nucleus

Cytoplasm

How does the size of cells differ?

1. Prokaryotes are largest
2. Eukaryotes are largest
3. Plant cells are largest
4. All cells can be different sizes, there is no pattern

How is DNA found in Prokaryotes?

1. In a nucleus
2. In a membrane bound organelle
3. As a plasmid
4. As a plasmid or free floating within the cytoplasm

What would the first impact be of missing mitochondria?

1. Plant cells wouldn't be able to photosynthesise
2. Cells wouldn't be able to make ATP
3. Glucose wouldn't be made
4. Proteins would stop forming

What would the first impact be if high temperatures damaged a cell membrane?

1. Leaky content
2. Pathogens could escape
3. Protein synthesis would stop
4. Cell walls would stop supporting

What does this picture show?

1. Centrioles
2. Chloroplasts
3. Smooth ER
4. Rough ER