What are the two types of microscopes? - Light Microscope
Electron Microscope
What is the magnifying power of a light microscope? - x 2,000
What is the magnifying power of an electron microscope? - x 2,000,000
What is the resolving power? - The ability to distinguish between two separate points...
All of AQA GCSE Biology (9-1) - Paper 1
What are the two types of microscopes? - ✔✔✔Light Microscope
Electron Microscope
What is the magnifying power of a light microscope? - ✔✔✔x 2,000
What is the magnifying power of an electron microscope? - ✔✔✔x 2,000,000
What is the resolving power? - ✔✔✔The ability to distinguish between two separate points
What is the resolving power of light microscopes? - ✔✔✔200 nm
What is the resolving power of electron microscopes? - ✔✔✔0.2 nm
What are the advantages of light microscopes? - ✔✔✔1. living samples
2. can view samples in colour
What are the disadvantages of electron microscopes? - ✔✔✔1. dead samples
2. samples in black and white
What can they do with electron microscopes to make them coloured? - ✔✔✔Dye them or colour them
in
How do you work out magnification? - ✔✔✔Image size / Object size
,How do you work out image size? - ✔✔✔Magnification x Object size
How do you work out object size? - ✔✔✔Image size / Magnification
How do you convert cm to mm? - ✔✔✔x 10
How do you convert um (micrometres) to mm? - ✔✔✔/ 1000
How do you convert mm to um (micrometres)? - ✔✔✔x 1000
What does an animal cell contain? - ✔✔✔Cytoplasm, Nucleus, Ribosomes, Mitochondrion, Cell
Membrane
Where is the nucleus located in an animal cell? - ✔✔✔The centre
What does the nucleus do? - ✔✔✔It controls the activities of the cell
What is the role of the cytoplasm? - ✔✔✔Where chemical reactions take place
Does an animal cell have a cell wall? - ✔✔✔No, it does not
What is the role of the cell membrane? - ✔✔✔Controls the ENTRY and EXIT of SUBSTANCES inside the
cell
What is the role of mitochondria/on? - ✔✔✔Creates energy by aerobic respiration
,What does aerobic respiration mean? - ✔✔✔It requires oxygen
What is the role of ribosomes? - ✔✔✔Where protein synthesis takes place
What kind of shape is a plant cell? - ✔✔✔Rectangular
What kind of shape is an animal cell? - ✔✔✔Circular
What does a plant cell contain? - ✔✔✔Chloroplast
Starch grain
Cell Membrane
Cell Wall
Nucleus
Mitochondrion
Cytoplasm
What is the role of the cell wall? - ✔✔✔Supports and protects the cell
What is the role of the vacuole? - ✔✔✔contains cell sap
Why is a plant cell rectangular? - ✔✔✔Due to the cell wall - strong
Where is the nucleus placed in a plant cell? - ✔✔✔In one corner/side
, What is the role of chloroplasts? - ✔✔✔Full of a pigment called chlorophyll
This is where photosynthesis takes place
What are bacteria responsible for? - ✔✔✔Diseases such as tuberculosis, cholera.
What does a bacterial cell contain? - ✔✔✔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? - ✔✔✔Helps it to move
What is the crucial thing about a bacterial cell? - ✔✔✔There is no distinct nucleus - have nucleoid
instead
What is a plasmid? - ✔✔✔Genetic information
What is the purpose of dendrites on a nerve cell? - ✔✔✔Allows the cells to make lots of connections
with other cells
Why do nerve cells have such a long axon? - ✔✔✔It forms the length of the neurone
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller jessyqueen. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.82. You're not tied to anything after your purchase.
