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
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