2. Organisation of the organism
2.1 Cell Structure
Describe and compare the structure of a plant cell with an animal cell, as seen under a light microscope, limited to cell wall, nucleus, cytoplasm, chloroplasts, vacuoles and location of the cell membrane
State the functions of the structures seen under the light microscope in the plant cell and in the animal cell
Supplement:
State that the cytoplasm of all cells contains structures, limited to ribosomes on rough endoplasmic reticulum and vesicles
State that almost all cells, except prokaryotes, have mitochondria and rough endoplasmic reticulum
Identify mitochondria and rough endoplasmic reticulum in diagrams and images of cells
State that aerobic respiration occurs in mitochondria
State that cells with high rates of metabolism require large numbers of mitochondria to provide sufficient energy
2.2 Levels of organisation
Relate the structure of the following to their functions:
ciliated cells - movement of mucus in the trachea and bronchi
root hair cells - absorption
xylem vessels – conduction and support
palisade mesophyll cells – photosynthesis
neurones cells - conduction of impulses
red blood cells – transport of oxygen
sperm and egg cells - reproduction
Define tissue as a group of cells with similar structures, working together to perform a shared function
Define organ as a structure made up of a group of tissues, working together to perform specific functions
Define organ system as a group of organs with related functions, working together to perform body functions
State examples of tissues, organs and organ systems from sections 6 to 16
Identify the different levels of organisation in drawings, diagrams and images of familiar material.
Supplement:
Identify the different levels of organisation in drawings, diagrams and images of unfamiliar material
CIE 2.2 levels of
Make a revision poster using this video
Make a revision poster using this video
2.3 Size of specimens
Calculate magnification and size of biological specimens using millimetres as units
Calculate magnification and size of biological specimens using millimetres
Supplement
Convert measurements between millimetres (mm) and micrometres (μm)
The size of specimens