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CHAPTER 1 ( science of life) - Coggle Diagram
CHAPTER 1 ( science of life)
Characteristics of life
Nutrition
Obtaining food, to provide energy and the materials needed for growth
Growth
Permanent increase in size with changes in form and structure
Reprodution
Producing offspring either sexually or asexually
Metabolism
Chemical reactions inside the cell, including cell respiration to release energy
Homeostasis
Keeping conditions inside the organism within tolerable limits
Response
The ability to react to changes in the environment
Excretion
Getting rid of the waste products of metabolism
Prokaryotes & Eukryotes
All living things are either one.
Eukaryotes
More complex
Genetic material is enclosed within a nuclear membrane
Chromosomes are linear DNA molecule
Contain membrane bound organelles
Prpkaryotes
Less complex
Genetic material is not compartmentalised within cell.
One chromosome consisting of a circular DNA molecule
No membrane bound organelles and is completely filled with cytoplasm.
Parts of cell:
Similarities?
They both contain DNA
They both contain ribosomes
They both have a cell / plasma membrane
Classifying Living things
System of classifcation
Domian, Kingdom, Phylum, Class, Order, Family, Genus, Speicies
3 Domians ( Eubacteria, Archaea, Eukaryotes)
Eubacteria: - Typical bacteria. They lack a membrane-bound nucleus.The kingdom Bacteria belongs to this domain.
Archea: - These archeabacteria are Prokaryotic cells that lack a membrane-bound nucleus. They live in extreme enviroonments. The kingdom Archea belongs to this domain.
Eukaryote: - most visible living things are from this domain. Cells will have membrane-bound nucleus.Kingdoms Protists, Fungi, Plants & Animals are from this Domain.
6 Kingdoms ( Bacteria, Archaea, Protists, Plants, Fungi, Animals)
Viruses are not considered living things