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Biology

Overview of Biology
Order based on size
Atoms
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Basic unit of life
92 natural elements
16 unnatural
Made of protons(positive), neutrons(neutral), and electrons(negative)

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Two or more atoms held together with chemical bonds make up molecules
Water molecules are the most abundant molecule
Molecules are in everything
Metals only have only one molecule, etc
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Homonuclear means it has one type of atom
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O4

Molecules-

Macro molecules
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A polymer of a monomer
Monomers are a unit of one macromolecule
Four major macro molecules
Lipids=Fat
Carbs=sugar
Nucleic acids=DNA
Proteins=amino acids

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The endoplasmic reticulum sends food to Golgi bodies
Golgi bodies process food into one molecule
The vacuole stores waste
Nucleus is the command center of the cell
Cell membrane is made up of lipids
Each cell has six feet of dna

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Are made of organelles
Two types of cell prokaryotic and eukaryotic
Cells can only come from other cells

Organelles-

Cells-

Tissue
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Types of tissue
Smooth=heart
Nervous=brain
Epithelial=mouth
Connective-skin

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Have specific jobs
Skin is an organ
Skin is used to control body temp
Brain is control center of the body

Organs-

Organ System
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Nervous system
Reparatory system
Circulatory
Digestive
Excretion
Organs work together towards a common goal

Individual (one person)
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Genomes- two letters in Punnett square
Taxonomy Single organism
 Class
 Family
 Order
 Species
 Phylum

Populations
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Multiple populations of species
A reef has a population

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A group of ecosystems that interact and share similar organisms
A biome is one of the largest ecosystems

Biomes-



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