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Cell structure and organisation - Coggle Diagram
Cell structure and organisation
Cells and organisation
Cell structure
All cells are surrounded by a membrane made of phospholipids and protiens.
Eukaryotic cells contain membrane bound organelles which are enclosed areas in the cytoplasm.
Units
kilometre
km
0.001 per metre
10^3 number of metres
ecosystems
metre
m
1 per metre
1 number of metres
larger organisms
millimetre
mm
1000 per metre
10^-3 number of metres
tissues
micrometre/micron
μm
1,000,000 per metre
10^-6 number of metres
cells and organelles
nanometre
nm
1,000,000,000 per metre
10^-9 number of metres
molecules
Nucleus
Contains DNA which with protein comprises the chromosomes. It also provides a template for DNA replication.
Bound by two membranes called the nuclear envelope with pores which allow the passage of large molecules.the outer membrane is continuous with the endoplasmic reticulum.
The granular material in the nucleus is nucleoplasm, it contains chromatin which is made of coils of DNA bound to protein.
The nucleus are within the nucleus they are the sites of formation of rRNA.
Mitochondria
Two membranes, separated by a narrow fluid filled inter-membrane space. The inner membrane is folded inwards to form a Cristae.
An organic matrix
small ribosomes and a small circle of DNA. which enable mitochondria to make some of their own proteins and self-replicate.
Difference between plant and animal cells
Organielles are interrelated
Prokaryotic cells, eukaryotic cells and viruses
Prokaryotic cells
Levels of organisation
differentiation and specialisation
tissues
Organs
organ systems
Organisms