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Questions I got wrong in previous tests - Coggle Diagram
Questions I got wrong in previous tests
Bio
Cell specialization and division
Explain how the process of cell division by mitosis is part of the growth process of a baby
Why is cell specialisation important for the development and growth of a healthy baby from a fertilised egg?
Compare the structure of a red blood cell with the structure of a plant cell
Why is it that when a red blood cell is placed into a beaker of water it bursts but a plant cell does not?
Give 2 advantages of using an electron microscope compare to using a light microscope
Exchange and transport across membranes
How does breathing allow large amounts of oxygen to enter blood
What's the difference between active transport, osmosis and diffusion?
Explain why balloons inflate when the flexible rubber sheet is pulled down
Define the term hypotonic
Describe what would happen if a plant cell was placed in water
Plants test
What is translocation? Why is it important to plants?
Where does the energy needed for photosynthesis come from?
Suggest one environmental condition where a large number of stomata per mm^2 on each leaf would be a disadvantag
Describe the relationship between the mean number of stomata per mm^2 and the carbon dioxide concentration
Chem
Atoms elements compounds and mixtures
Give one difference between a compound and a mixture
Which group of atoms are unreactive and why?
Separating mixtures
Explain why a condenser is used in fractional distillation
What is the stationary phase in chromatography
How would you separate useful oils from crude oil?
Formulae and chemical equation test (lots wrong)
Balence:
Fe2O3 + CO -> Fe + CO2
KMnO4 + HCl -> MnCl2 + Kcl + Cl2 + H2O
Write a balanced symbol equation
Aluminium + sulphuric acid -> Aluminium sulphate + Hydrogen
Magnesium oxide + Nitric acid -> Magnesium sulphate + Water
Calcium + Water -> Calcium hydroxide + Hydrogen
Barium hydroxide + sulphuric acid -> Barium sulphate + Water
Fluorine + Potassium Bromide -> Bromine + Potassium Fluorine
Ammonia + Oxygen -> Nitrogen monoxide + Water
Calculate % mass of fS in Al2(SO4)3
Solubility and equations
Give definitions for:
Solubility
Saturated solutions
Physics
Forces
A spring is stretched 8cm when a mass of 600g is hung on it, what will be the extension if the mass was changed to one of 400g
A student carried out an investigation to determine the spring constant of a spring, describe the method and include any causes of inaccuracy
Why did the student measure the extension for five different forces rather than measure the extension for just one force?
Figure 1 (No figure use ur brain) shows a spring before and after a mass has been suspended from it, state two ways the shape of the spring has increased
Electricity
Maths