Proteins Flashcards
Proteins are polymers made from?
Proteins are polymers made from monomers called amino acids
Draw an amino acid molecule !
Now
In an amino acid molecule what are the two main groups?
Amine molecule
Carboxylic acid
Amino acids join with what link?
Draw this link!
Peptide links
Draw a peptide link now !
Amino acids go to proteins when they undergo ?
Condensation reaction
Define essential amino acids ?
Acids that the body cannot synthesise for itself and must obtain through its diet
Name the two types of proteins ?
Fibrous
Globular
Why do proteins form different shapes?
Proteins form different shapes and arrangements due to hydrogen bonding between the protein chains
What do enzymes do ?
They catalyse reactions in the body
What can denature (change the shape) of a protein/ enzyme ?
PH or temperature can centaurs the enzyme stopping it from working properly
When drawing amino acids remeber to draw a link on either side
.
Chromotography is used to identify amino acids
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Explain hydrogen bonding (proteins)
Big question
- hydrogen bonding between the protein molecules makes shapes
- when proteins are heated (cooked) the heat energy breaks the hydrogen bonds which causes the protein chains to unfold. This changes the shape of the proteins and the process is called denaturing.
