Fichas
Proteins
Fichas del conjunto (19)
- 1How many different amino acids are there?20
- 2Name the constituents in the structure of an animo acid- Animo Group (NH2)
- Variable R group
- Central Carbon Atom
- Carboxylic Acid Group (COOH) - 3What type of reaction joins two amino acids together?Condensation Reaction
- 4What is the process called when long chains of monomers join together?Polymerisation
- 5In the condensation reaction between two animo acids, what is formed?A molecule of water is formed between the OH of the carboxylic acid group, and a Hydrogen from the amino group of another amino acid
- 6What is the bond called that joins two mono peptides together? And what atoms does it form between?It is a Peptide Bond and it forms between the carbon atom of one amino acid, and the nitrogen of another animo acid
- 7Describe the primary structure of proteins.The specific sequence of amino acids in a single polypeptide chain
- 8Describe the secondary structure of a proteinHydrogen bonds form between the amino acids and the polypeptide chain is folded into a 3D structure - either an alpha helix, or beta pleated sheet
- 9Describe the tertiary structure of a proteinIn the tertiary structure, more hydrogen bonds are formed as well as ionic bonds and di-sulphide bridges
- 10Describe the quaternary structure of a protein.The quaternary structure of a protein includes more than one polypeptide chain and it can be associated with non-protein (prosthetic) groups such as a haem group, in haemoglobin
- 11What type of function do globular proteins carry out?Metabolic functions this is why a lot of enzymes are globular
- 12Haemoglobin is an example of what type of protein?Globular
- 13Describe the specific structure of a fibrous proteinThe secondary structure is very tight, and the tertiary structure is wound again into a helix. The quaternary structure is made up of many of the tertiary structure chains, wound tightly into a strong, rope-like protein
- 14Where as globular proteins carry out metabolic functions, what functions do fibrous proteins carry out?Structural Functions
- 15What structural 'link' makes fibrous proteins so strong?cross links which form between the parallel rows of chains are what gives fibrous proteins the opportunity to become a strong protein
- 16What is the name of the test for proteins? What feature of proteins does this test detect?Name: Biuret Test
Feature: Peptide Bonds - 17What is initially added to the sample in question when testing for proteins?Sodium Hydroxide Solution
- 18What is the second solution to be added to the mixture?(Very dilute) Copper (II) Sulphate
- 19If a peptide bond is present, what colour does the mixture turn?Purple
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- AS - Level (1 - Biological Molecules) Biology Fichas sobre Proteins, creado por Bee Brittain el 11/03/2016.
- Creado por
- Bee Brittain
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