7973616
Description
Flashcards by Kudzai Mapendere, updated more than 1 year ago
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Created by Kudzai Mapendere
over 7 years ago
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| Question | Answer |
| What structure meditates and controls the formation of polypeptides? | Ribosome-site of polypeptide/protein synthesised Enzymes are needed for the reaction |
| How many amino acids do we know of? | 20 natural 2 are man-made |
| The structure of two generalised amino acids | |
| Outline the process by which amino acids are created. | created by modification of one amino acid after polypeptide formation by an enzyme. e.g. protein-hydroxide protein |
| what is the name of the longest polypeptide and how many amino acids does it contain? | Titin 30,000 amino acids |
| Outline the central dogma of genetics. | |
| List the properties of the R-groups in an amino acid. | Polar/Hydrophilic Non-polar/Hydrophobic Positive or negative charge sometimes can contain sulphur |
| Describe the primary of protein structure. | |
| Outline the secondary of protein structure. | |
| Outline the tertiary structure of protein. | |
| Outline the quaternary structure of protein. | |
| Distinguish the difference between Globular and Fibrous proteins. | |
| Define the term genome | All the genes of a cell, tissue or an organism. Determines what proteins are in an organism and what it can possibly produce. |
| Define the term proteome. | All the proteins produce by a cell tissue or an organism. It reveals what is happening in an organism at a particular time. |
| What affects the proteome? | The environment, nutrition, activity levels and anything else that affects a cell's activity. |
| Explain why proteome is larger and more varied than genome. | Larger and varied because not all genes produce polypeptide. Multiple polypeptides and prosthetic groups can interact and amino acids can be modified. Polypeptides can fold into different structures. |
| Describe the term denaturation. | Denaturation is a process in which proteins or nucleic acids lose the quaternary structure, tertiary structure and secondary structure and returns to its natural state, its perminant. |
| what factors can cause denaturation? | Heat Change in pH Viscosity Colour |
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