LECTURE: MACROMOLECULES PART 1

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LECTURE: MACROMOLECULES PART 1 KIRSTIN BROWN

Lecture: MACROMOLECULES ▪ What are macromolecules? ➢ Macro = BIG ➢ Molecule

“ A macromolecule is a very large molecule commonly created by polymerization of smaller subunits” - wikipedia

Polymerization = _____________________________________

_______________________________________________________

Lecture: MACROMOLECULES ▪ What are macromolecules? ➢ Macro = BIG ➢ Molecule

“ A macromolecule is a very large molecule commonly created by polymerization of smaller subunits” - wikipedia

Life!

Lecture: MACROMOLECULES Outline: Macromolecules PART 1 o Monomers and polymers o How are monomers joined together? o How are polymers broken apart?

Macromolecules PART 2 o 4 types of polymers: ➢ Nucleic acids ➢ Proteins ➢ Polysaccharides ➢ Lipids

▪ A ____________ is a molecule consisting of a few

or many repeating building blocks called _____________

Monomers

Mono = _____

Polymer

Poly = _____

How are monomers joined together? ▪ Monomers are joined together to form polymers

by a _____________________________ reaction

+ _______

How are polymers broken apart? ▪ Polymers are broken down into monomers by a

______________ reaction

_____

MACROMOLECULES PART 1 - Summary ▪ Polymers are made up of building blocks called

________________

▪ Monomers are joined together by

________________________

▪ Polymers are broken down by

________________________

4 types of macromolecules

Nucleic Acid

Protein

Life

Polysaccharides

Lipids

LECTURE: MACROMOLECULES PART 2 KIRSTIN BROWN

Lecture: MACROMOLECULES Outline: Macromolecules PART 1 ✓ Monomers and polymers ✓ How are monomers joined together? ✓ How are polymers broken apart?

Macromolecules PART 2 o 4 types of polymers: ➢ Nucleic acids ➢ Proteins ➢ Polysaccharides ➢ Lipids

Nucleic Acids - structure ▪ The monomers of nucleic acids are called

__________________

▪ Nucleotides have 3 key “ingredients”: ➢ ____________ ➢ ____________ ➢ ____________

Nucleic Acids - structure ▪ Nucleotides come in 5 different “flavours”

depending their nitrogenous base

_____________

______________

Nucleic Acids - structure ▪ Nucleotides come in 5 different “flavours”

depending their nitrogenous base

_____ only

____ only

Nucleic Acids - structure ▪ Nucleotides are joined together by a

dehydration / condensation reaction

▪ A ________________ bond is formed between the

5’ phosphate of one nucleotide and the 3’ hydroxyl of the other.

Nucleic Acids - structure ▪ Nucleotides are joined together by a

dehydration / condensation reaction

▪ A phosphodiester bond is formed between the

5’ phosphate of one nucleotide and the 3’ hydroxyl of the other.

Nucleic Acids - structure ▪ Each strand has a __________________ backbone,

with the nitrogenous base facing inward

▪ Two strands are held together by ______________

____________ between the nitrogenous bases

▪ The strands are ____________________ and

________________

Nucleic Acids - summary ▪ Nucleotides consist of a phosphate, a sugar, and a

base

▪ Nucleotides are joined together by a

_____________ bond

DNA

RNA

Bases

A

A

Sugar

Deoxyribose (no –OH group on 4’ carbon)

CG

CG

Ribose (has –OH group on both 3’ and 4’ carbons)

▪ A always pairs with _________ ➢ _______ hydrogen bonds hold them together ▪ C always pairs with _________ ➢ _______ hydrogen bonds hold them together

▪ DNA strands are complementary and antiparallel,

and form a _____________________

Protein - structure ▪ The monomers of proteins are called

_____________________

▪ Each amino acids is composed of: ➢ __________________ ➢ __________________ ➢ __________________

Protein - structure ▪ There are _________ different R groups

Protein - structure ▪ Amino acids are joined together by through a

dehydration / condensation reaction

▪ They are held together by a _________________

Protein - structure ▪ Proteins have 4 levels of overall structure: ➢ Primary: ____________________ ➢ Secondary: __________________ between

backbone atoms (α-helix or β-sheet)

➢ Tertiary: Interactions between ________________ ➢ Quaternary: Interactions between

________________________________

http://www.slideshare.net/arijabuhaniyeh/biochemistry-ch4-protein-structure-and-function

Proteins - summary ▪ The monomers of proteins are called

_____________

▪ The monomers are joined together by

___________ bonds

▪ There are ________ different R groups ▪ There are four levels of protein structure:

Primary Secondary Tertiary Quaternary

Polysaccharides - structure ▪ The monomers of polysaccharides are called

________________________ (eg. Glucose)

▪ Monosaccharides are joined together by a

dehydration / condensation reaction to form a ________________________

________________

________________ ________________

Polysaccharides - structure ▪ Examples: starch, glycogen, cellulose, chitin ▪ Purpose: _______________________________

Starch

Glycogen

Cellulose

Chitin

Lipids - structure ▪ The monomers of lipids are called

________________________________________

▪ Monomers are joined together by a dehydration

/ condensation reaction to form a ________________________

Glycerol

Fatty acids

Triacylglyceride

+ 3 H2O

Lipids - structure ▪ Lipids are a diverse group of macromolecules

and include: Fats

Phospholipids

Steroids

SUMMARY ▪ Monomers are the building blocks that make up ___________________ ▪ Monomers are joined together by _________________________________ ▪ Polymers are broken down by ___________________________ ▪ There are 4 major biologically important macromolecules:

Macromolecule Nucleic acid Protein Polysaccharides Lipids

Monomer

Bond type

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