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Proteins: Play-Doh
New College- Biochemistry, proteins
| Question | Answer |
|---|---|
| How many amino acids are there? | Twenty |
| What type of protein structure does Haemoglobin have? | Quarternary |
| What is a primary structure? | A sequence of amino acids in a polypeptide chain |
| What four elements are always present in an amino acid? | Oxygen, Hydrogen, Nitrogen and Carbon |
| What two types of secondary structure are there? | Alpha helix & Beta pleat |
| How many polypeptide chains does haemoglobin contain? | Four |
| What is a tertiary structure? | A complex 3D shape, polypeptide chains twist and fold even more than a secondary structure |
| What protein structure do enzymes have? | Tertiary |
| What element do the Haem groups in haemoglobin contain? | Iron |
| What is oxyhaemoglobin? | Fully oxygenated haemoglobin. 1 molecule of Hb can carry 4 oxygen molecules |
| How many oxygen molecules can a complete haemoglobin carry at one time? | Four- one in each haem group |
| What are the two different types of protein? | Globular and fibrous |
| Are fibrous proteins soluble or insoluble? | Insoluble |
| What is a prosthetic group? | A group that is chemically different to the rest of the molecule |
| What may a function of a globular protein be? | An enzyme, pigment, antibody, or hormone |
| What do amino acids differ in? | Their R-Groups |
| What is a chain of amino acids called? | A polypeptide |
| What is a condensation reaction? | A reaction in which water is lost to bond two molecules together- for example used to create a peptide bond |
| What is a peptide bond? | When two amino acids join together |