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Topic 2.4 & 2.5: Proteins and Enzymes Assessment Statements
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Topic 2.4 Proteins
2.4.1 - State that the amino acid sequence is coded by DNA/genes
2.4.2 - Describe how amino acid sequence determines 3-D conformation of proteins including possible
bonding between amino acids
2.4.3 - Explain the 4 levels of protein structure, indicating the significance of each
2.4.4 - Outline the difference between fibrous and globular proteins
2.4.5 - List 6 functions of proteins and provide a named biological example of each
2.4.6 - Define proteome
Topic 2.5 Enzymes
2.5.1 - State that metabolic pathways consist of chains and cycles of enzyme-catalyzed reactions
2.5.2 - Illustrate the “Lock and Key” theory of enzymes including the idea of enzyme specificity
2.5.3 - Describe 3 factors that affect enzyme activity
2.5.4 - Define denaturation
2.5.5 - Explain the use of lactase in production of lactose free milk
2.5.6 - Explain that enzymes lower activation energy of chemical reactions that they catalyze
2.5.7 - Describe the “induced-fit” theory of enzymes
2.5.8 - Explain the difference between competitive and non-competitive inhibition with reference to 1
example of each
2.5.9 - Explain control of metabolic pathways by end-product inhibition and role of allosteric sites
Topic 2.6 DNA and RNA Structure
2.6.1 - Illustrate a DNA nucleotide structure in terms of sugar, nitrogen base, and phosphate(simple
shapes can be used to represent the component parts)
2.6.2 – State the names of the four bases found in DNA as well as the four found in RNA
2.6.3 - Explain how DNA double helix Is formed using complementary base pairing, hydrogen and
covalent bonds.
2.6.4 - Draw and label a simple diagram of the molecular structure of DNA