MICR 2420 Lecture Notes - Lecture 1: Eukaryote, Concept2

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Concept 1: Cells are the fundamental unit of life
All living things made up of one or more cells
Three Domains
Eukarya, Bacteria, Archae
• Unicellula
Bacteria, archae
• Multicellular
Plants, animals (fungi incl.)
• Both
Protists (incl. algae)
Concept 2: Cell Function
Each has capacity to perform basic function
Organelles- make up cell
8 Functions
Respiration, regulation, reproduction, excretion, growth,
nutrition, transport, sythesis
Concept 3: Macromolecules
• Carbohydrates
Monosaccharides
• Proteins
Amino Acids
Nucleic Acids
Nucleotides
• Lipids
Glycerol. Fatty acids
Concept 4: Origin of Life on Earth
All life made up of stardust- supernova reminants
Origin required fundamental elements that make up organic
molecules
Life requires input of continual energy and temperature that
allows for liquid water
Earliest life form: bacteria
Concept 5: Endosymbiosis
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