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Introduction to Biology NotesMr. Ramirez
BiologyThe study of living organisms
Topics include: ◦Morphology ◦Physiology ◦Anatomy ◦Distribution and Organization of
Organisms
Why Biology? Almost anything in everyday life
can be explained with the concepts we will learn in biology
For example:◦Why do some animals only live in
specific places? ◦Why do we get sick? ◦How can we cure the diseases that
we have?◦Nutrition and Health
DNA DNA is molecule that falls into
the category of nucleic acids
DNA = Deoxyribonucleic Acid
DNA is responsible for absolutely everything in all organisms – it is like a blueprint for a building
DNA—the mastermind DNA controls
◦Our appearance◦Our predispositions ◦What we will pass on to offspring
Many of the diseases that humans have are a result of DNA that is damaged or mutated
DNA video
https://www.youtube.com/watch?v=M4zHVRLXkgw
Structure of DNA DNA is found in the nucleus of a
cell
Structure of DNA DNA is composed of three things
◦Sugar (Deoxyribose)◦Phosphate ◦Base
◦ALL three of these things together make a nucleotide
Nucleotide
Structure of DNA There are 4 types of bases
◦Adenine ◦Thymine ◦Cytosine ◦Guanine
Adenine always bonds to Thymine
Cytosine always bonds to Guanine