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Biology
(b) use of appropriate mathematical skills for analysis of quantitative data
OCRA-Level
H420
Biology
Analysis: (c) appropriate use of significant figures
OCRA-Level
H420
Biology
(i) selection and labelling of axes with appropriate scales, quantities…
OCRA-Level
H420
Biology
Analysis: (ii) measurement of gradients and intercepts.
OCRA-Level
H420
Biology
Biodiversity: (a) how biodiversity may be considered at different levels
OCRA-Level
H420
Biology
(b) (i) how sampling is used in measuring the biodiversity of a habitat…
OCRA-Level
H420
Biology
(c) how to measure species richness and species evenness in a habitat
OCRA-Level
H420
Biology
(d) the use and interpretation of Simpson’s Index of Diversity (D) to…
OCRA-Level
H420
Biology
(e) how genetic biodiversity may be assessed, including calculations
OCRA-Level
H420
Biology
Biodiversity: (f) the factors affecting biodiversity
OCRA-Level
H420
Biology
(g) the ecological, economic and aesthetic reasons for maintaining…
OCRA-Level
H420
Biology
Biodiversity: (h) in situ and ex situ methods of maintaining biodiversity
OCRA-Level
H420
Biology
(i) international and local conservation agreements made to protect…
OCRA-Level
H420
Biology
(ii) practical investigations collecting random and non-random samples in…
OCRA-Level
H420
Biology
(a) the roles of membranes within cells and at the surface of cells
OCRA-Level
H420
Biology
(b) the fluid mosaic model of membrane structure and the roles of its…
OCRA-Level
H420
Biology
(c) (i) factors affecting membrane structure and permeability
OCRA-Level
H420
Biology
Biological membranes: (d) (i) the movement of molecules across membranes
OCRA-Level
H420
Biology
(e) (i) the movement of water across membranes by osmosis and the effects…
OCRA-Level
H420
Biology
(ii) practical investigations into factors affecting membrane structure…
OCRA-Level
H420
Biology
(ii) practical investigations into the effects of solutions of different…
OCRA-Level
H420
Biology
(ii) practical investigations into the factors affecting diffusion rates…
OCRA-Level
H420
Biology
(a) how hydrogen bonding occurs between water molecules, and relate this,…
OCRA-Level
H420
Biology
(b) the concept of monomers and polymers and the importance of…
OCRA-Level
H420
Biology
(c) the chemical elements that make up biological molecules
OCRA-Level
H420
Biology
(d) the ring structure and properties of glucose as an example of a hexose…
OCRA-Level
H420
Biology
(e) the synthesis and breakdown of a disaccharide and polysaccharide by…
OCRA-Level
H420
Biology
(f) the structure of starch (amylose and amylopectin), glycogen and…
OCRA-Level
H420
Biology
(g) how the structures and properties of glucose, starch, glycogen and…
OCRA-Level
H420
Biology
(h) the structure of a triglyceride and a phospholipid as examples of…
OCRA-Level
H420
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