Page 124 - Knowledge Organiser Yr9 24-25

Knowledge Base: Science B1: Cell Biology Year 9
2.5
What is the function of the cytoplasm?
Where most of the chemical reactions take place.
2.6
What is the function of the mitochondria?
Where respiration takes place.
2.7
What is respiration?
A chemical reaction that releases energy from glucose.
2.8
What is the function of the ribosomes?
Where protein synthesis takes place.
2.9
What is the function of the cell wall?
It strengthens and supports the cell.
2.10
What is the function of the permanent vacuole?
It contains cell sap (to keep the cell rigid).
2.11
What is the function of the chloroplasts?
Where photosynthesis takes place.
2.12
Draw a labelled diagram of a bacterial cell.
How plants use light to make glucose.
2.13
In plant cells, what is the cell wall made from?
Cellulose.
2.14
Draw a labelled diagram of a plant cell.
2.15
Draw a labelled diagram of an animal cell.
1. Eukaryotes and Prokaryotes
1.1 What is a cell?
1.2 What are eukaryotic cells?
1.3 What are prokaryotic cells?
The basic unit of a living thing. Cells with a nucleus.
Cells without a nucleus.
1.4
Give two examples of eukaryotic cells.
Animal or plant cells.
1.5
Give an example of a prokaryotic cell.
Bacteria.
1.6
What form does the genetic material in a prokaryotic cell take?
A single DNA loop (and rings of DNA called plasmids).
1.7
Give two differences between prokaryotic and eukaryotic cells.
Eukaryotic cells have a nucleus and are much bigger.
1.8
Draw a labelled diagram of a bacterial cell.
2. Animal and Plant Cells
2.1
What are the five sub-cellular structures that are present in both animal and plant cells?
Nucleus, cell membrane, cytoplasm, mitochondria and ribosomes.
2.2
What are the three sub-cellular structures that may be present only in in plant cells?
Cell wall, permanent vacuole and chloroplasts.
2.3 What is the function of the nucleus?
Controls the activities of the cell.
2.4
What is the function of the cell membrane?
Controls what enters and leaves the cell.
124