Introduction Atoms: the smallest units of matter that can not be broken down further. There are 94 different types of atoms, from 94 elements. Examples: carbon (C) oxygen (O) nitrogen (N) hydrogen (H) copper (Cu) Molecules: a combination of atoms, usually of different types. There are an infinite number of different molecules.
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Introduction Atoms: the smallest units of matter that can not be broken down further. There are 94 different types of atoms, from 94 elements. Examples:
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Introduction
Atoms: the smallest units of matter that can not be broken down further. There are 94 different types of atoms, from 94 elements. Examples: carbon (C) oxygen (O) nitrogen (N) hydrogen (H)
copper (Cu)Molecules: a combination of atoms, usually of different types. There are an infinite number of different molecules.
• Chemistry deals with the combination of atoms to form molecules.
• Organic chemistry deals with molecules containing carbon atoms. Carbon can form 4 stable bonds with other atoms.
The plasma membrane. [Just know the basic structure of lipids in the membrane]
pH test for lipids
• Triglycerides are lipids which are neutral with regard to pH (a measure of the hydrogen ion concentration) because their fatty acids are bound to other molecules.
• When triglycerides is broken down, fatty acids are released which then release hydrogen ion concentration, causing a lower pH.
• Pancreatin contains an enzyme that breaks triglyceride molecule.
Nucleic Acids
Ribose ordeoxyribose
phosphate
nucleotide
DNA (deoxyribonucleic acid)
• Sugar is deoxiribose• 4 types of bases
• A-adenine• G-guanine• T-thymine• C-cytosine
• 2 nucleotide chains are twisted together in a double helix