Biology GCSE AQA - CELLS
5.0 / 5 based on 1 rating
- Created by: RevisingBird
- Created on: 27-01-18 16:48
What are eukaryotic cells?
Animal and plant cells
1 of 35
What are prokaryotic cells?
Bacteria cells
2 of 35
How do you calculate sizes and orders of magnitude?
size of the bigger object/size of the small object
3 of 35
What can embryonic stem cells do?
Become any type of specialised cell
4 of 35
What is a plant stem cell?
An unspecialised cell that can differentiate into any type of plant
5 of 35
Where are plant stem cells found?
Root tips + shoot tips + stem
6 of 35
What is differentiation?
When an unspecialised cell turns into a specialised cell
7 of 35
What does DNA do?
Codes for different proteins
8 of 35
What is needed if a protein is produced?
The gene needs to be switched on
9 of 35
What happens if specialised cells work together?
They make tissues
10 of 35
Where is epithelial tissue?
The inner layer of cells
11 of 35
What does muscle tissue do?
Contracts to churn food and and digestive juices
12 of 35
What does glandular tissue do?
Releases digestive juices e.g. enzymes
13 of 35
Whats the correct statement about a light microscope?
Magnifies cells and sub-cellular structures
14 of 35
What's the correct statement about a TEM?
It has a magnification up to 2,000,000
15 of 35
What's the correct statement about a SEM?
It has a lower magnification that TEM
16 of 35
What's the equation for total magnification?
eyepiece magnification x objective magnification
17 of 35
Pick the equation relating image size, magnification and specimen size
magnification = image size/ specimen size
18 of 35
What is diffusion?
Net movement of particles from a high to a low concentration
19 of 35
What quickens the rate of diffusion?
If the concentration gradient is bigger
20 of 35
When do the particles in diffusion stop moving randomly?
When equilibrium is reached
21 of 35
What's the carbon dioxide conc. like inside a leaf compared to the air outside
It's lower because it's being used up in cells
22 of 35
What's the oxygen conc. like inside a leaf compared to the air outside
It's higher because it's being produced in the cells
23 of 35
What is osmosis?
Diffusion of water from a high conc. to a low conc. across a partially a permeable membrane
24 of 35
How is osmosis different to diffusion?
There is no net movement because it has reached equilibrium
25 of 35
What does isotonic mean?
Conc. of solutions outside and inside cell are equal
26 of 35
What does hypotonic mean?
Conc. outside cell is lower than inside the cell
27 of 35
What does hypertonic mean?
Conc. outside the cell is higher that the conc. inside the cell
28 of 35
Name when osmosis is diffusing out of the cell
Plasmolysed - Hypertonic
29 of 35
Name when osmosis will occur into the cell
Turgid - Hypotonic
30 of 35
Name when there is no net movement in osmosis
Flaccid
31 of 35
How is a cell made turgid?
When the water pressure builds up and pushes against the cell wall
32 of 35
What's the fancy word for when the water outside and inside a plant cell is equal
Flaccid
33 of 35
What is active transport?
Movement of substances from a low to a high concentration
34 of 35
What is different about active transport and why?
It goes against the concentration gradient because it needs energy from mitochondria
35 of 35
Other cards in this set
Card 2
Front
What are prokaryotic cells?
Back
Bacteria cells
Card 3
Front
How do you calculate sizes and orders of magnitude?
Back
Card 4
Front
What can embryonic stem cells do?
Back
Card 5
Front
What is a plant stem cell?
Back
Related discussions on The Student Room
- Biology paper 1 2023 »
- mark scheme biology 2022 gcse combined science higher paper 1 »
- AQA A-level biology essay topics »
- AQA GCSE Biology Paper 1 (Higher Tier) 8461/1H - 17 May 2022 [Unofficial Mark Scheme] »
- AQA A-Level Biology Paper 3 [21st June 2023] Exam Chat »
- Unofficial Mark scheme: AQA GCSE Biology Paper 1 Triple Higher Tier 16th May 2023 »
- Is a myofibril an organelle »
- AQA GCSE Biology Paper 1 Triple Higher Tier [16th May 2023] Exam Chat »
- Viruses »
- Biochemistry Personal Statement Example »
Similar Biology resources:
2.5 / 5 based on 24 ratings
4.5 / 5 based on 8 ratings
0.0 / 5
3.0 / 5 based on 1 rating
4.0 / 5 based on 1 rating
4.5 / 5 based on 8 ratings
3.0 / 5 based on 3 ratings
4.5 / 5 based on 133 ratings
0.0 / 5
2.5 / 5 based on 5 ratings
Comments
No comments have yet been made