All of AQA GCSE Biology (9-1) - Paper 1
questions and 100% verified answers 2025
What are the two types of microscopes? - Answer Light Microscope
Electron Microscope
What is the magnifying power of a light microscope? - Answer x 2,000
What is the magnifying power of an electron microscope? - Answer x 2,000,000
What is the resolving power? - Answer The ability to distinguish between two separate points
What is the resolving power of light microscopes? - Answer 200 nm
What is the resolving power of electron microscopes? - Answer 0.2 nm
What are the advantages of light microscopes? - Answer 1. living samples
2. can view samples in colour
What are the disadvantages of electron microscopes? - Answer 1. dead samples
2. samples in black and white
What can they do with electron microscopes to make them coloured? - Answer Dye them or colour
them in
How do you work out magnification? - Answer Image size / Object size
How do you work out image size? - Answer Magnification x Object size
How do you work out object size? - Answer Image size / Magnification
,How do you convert cm to mm? - Answer x 10
How do you convert um (micrometres) to mm? - Answer / 1000
How do you convert mm to um (micrometres)? - Answer x 1000
What does an animal cell contain? - Answer Cytoplasm, Nucleus, Ribosomes, Mitochondrion, Cell
Membrane
Where is the nucleus located in an animal cell? - Answer The centre
What does the nucleus do? - Answer It controls the activities of the cell
What is the role of the cytoplasm? - Answer Where chemical reactions take place
Does an animal cell have a cell wall? - Answer No, it does not
What is the role of the cell membrane? - Answer Controls the ENTRY and EXIT of SUBSTANCES inside the
cell
What is the role of mitochondria/on? - Answer Creates energy by aerobic respiration
What does aerobic respiration mean? - Answer It requires oxygen
What is the role of ribosomes? - Answer Where protein synthesis takes place
What kind of shape is a plant cell? - Answer Rectangular
,What kind of shape is an animal cell? - Answer Circular
What does a plant cell contain? - Answer Chloroplast
Starch grain
Cell Membrane
Cell Wall
Nucleus
Mitochondrion
Cytoplasm
What is the role of the cell wall? - Answer Supports and protects the cell
What is the role of the vacuole? - Answer contains cell sap
Why is a plant cell rectangular? - Answer Due to the cell wall - strong
Where is the nucleus placed in a plant cell? - Answer In one corner/side
What is the role of chloroplasts? - Answer Full of a pigment called chlorophyll
This is where photosynthesis takes place
What are bacteria responsible for? - Answer Diseases such as tuberculosis, cholera.
What does a bacterial cell contain? - Answer Pilli
Plasmid
Ribosomes
Cytoplasm
Plasma membrane
Cell wall
, Capsule
Bacterial Flagellum
Nucleoid - circular DNA
What is the purpose of a flagella to a bacterial cell? - Answer Helps it to move
What is the crucial thing about a bacterial cell? - Answer There is no distinct nucleus - have nucleoid
instead
What is a plasmid? - Answer Genetic information
What is the purpose of dendrites on a nerve cell? - Answer Allows the cells to make lots of connections
with other cells
Why do nerve cells have such a long axon? - Answer It forms the length of the neurone
It carries the nerve impulse from one place to another
Are nerve cells active? - Answer Yes, they are very active cells and need lots of energy
Why do nerve cells have a lot of mitochondria? - Answer To release energy in respiration
What is a synapse? - Answer Gaps between neurones
What happens at a synapse? - Answer Electrical impulses are converted into chemical impulses
What do muscle cells contain? - Answer Special proteins which can slide over each other when muscles
contract
Why do muscle cells need a lot of mitochondria? - Answer They are very active cells and are always
contracting so they need energy provided by mitochondria for muscle contraction.
questions and 100% verified answers 2025
What are the two types of microscopes? - Answer Light Microscope
Electron Microscope
What is the magnifying power of a light microscope? - Answer x 2,000
What is the magnifying power of an electron microscope? - Answer x 2,000,000
What is the resolving power? - Answer The ability to distinguish between two separate points
What is the resolving power of light microscopes? - Answer 200 nm
What is the resolving power of electron microscopes? - Answer 0.2 nm
What are the advantages of light microscopes? - Answer 1. living samples
2. can view samples in colour
What are the disadvantages of electron microscopes? - Answer 1. dead samples
2. samples in black and white
What can they do with electron microscopes to make them coloured? - Answer Dye them or colour
them in
How do you work out magnification? - Answer Image size / Object size
How do you work out image size? - Answer Magnification x Object size
How do you work out object size? - Answer Image size / Magnification
,How do you convert cm to mm? - Answer x 10
How do you convert um (micrometres) to mm? - Answer / 1000
How do you convert mm to um (micrometres)? - Answer x 1000
What does an animal cell contain? - Answer Cytoplasm, Nucleus, Ribosomes, Mitochondrion, Cell
Membrane
Where is the nucleus located in an animal cell? - Answer The centre
What does the nucleus do? - Answer It controls the activities of the cell
What is the role of the cytoplasm? - Answer Where chemical reactions take place
Does an animal cell have a cell wall? - Answer No, it does not
What is the role of the cell membrane? - Answer Controls the ENTRY and EXIT of SUBSTANCES inside the
cell
What is the role of mitochondria/on? - Answer Creates energy by aerobic respiration
What does aerobic respiration mean? - Answer It requires oxygen
What is the role of ribosomes? - Answer Where protein synthesis takes place
What kind of shape is a plant cell? - Answer Rectangular
,What kind of shape is an animal cell? - Answer Circular
What does a plant cell contain? - Answer Chloroplast
Starch grain
Cell Membrane
Cell Wall
Nucleus
Mitochondrion
Cytoplasm
What is the role of the cell wall? - Answer Supports and protects the cell
What is the role of the vacuole? - Answer contains cell sap
Why is a plant cell rectangular? - Answer Due to the cell wall - strong
Where is the nucleus placed in a plant cell? - Answer In one corner/side
What is the role of chloroplasts? - Answer Full of a pigment called chlorophyll
This is where photosynthesis takes place
What are bacteria responsible for? - Answer Diseases such as tuberculosis, cholera.
What does a bacterial cell contain? - Answer Pilli
Plasmid
Ribosomes
Cytoplasm
Plasma membrane
Cell wall
, Capsule
Bacterial Flagellum
Nucleoid - circular DNA
What is the purpose of a flagella to a bacterial cell? - Answer Helps it to move
What is the crucial thing about a bacterial cell? - Answer There is no distinct nucleus - have nucleoid
instead
What is a plasmid? - Answer Genetic information
What is the purpose of dendrites on a nerve cell? - Answer Allows the cells to make lots of connections
with other cells
Why do nerve cells have such a long axon? - Answer It forms the length of the neurone
It carries the nerve impulse from one place to another
Are nerve cells active? - Answer Yes, they are very active cells and need lots of energy
Why do nerve cells have a lot of mitochondria? - Answer To release energy in respiration
What is a synapse? - Answer Gaps between neurones
What happens at a synapse? - Answer Electrical impulses are converted into chemical impulses
What do muscle cells contain? - Answer Special proteins which can slide over each other when muscles
contract
Why do muscle cells need a lot of mitochondria? - Answer They are very active cells and are always
contracting so they need energy provided by mitochondria for muscle contraction.
