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Transcript
NZQA registered unit standard 26490 version 2 Page 1 of 3 Title Demonstrate knowledge of the structure, properties, and functions of amino acids and proteins Level 5 Credits 4 Purpose People credited with this unit standard are able to: describe the chemical structure and properties of amino acids; describe the structure and functions of peptides and proteins; and explain the physical and chemical properties of proteins. Classification Science > Biochemistry Available grade Achieved Explanatory notes None. Outcomes and evidence requirements Outcome 1 Describe the chemical structure and properties of amino acids. Evidence requirements 1.1 An L-amino acid is described using a diagram in relation to its structure. 1.2 The system for classifying amino acids in relation to proteins is described. 1.3 Acid-base dissociation characteristics of amino acids are described in relation their structure. Range 1.4 characteristics include – isoelectric point, amphoteric, zwitterions. Procedures for qualitative and quantitative analysis are described for amino acids. Range ninhydrin, fluorometric. NZQA National Qualifications Services SSB Code 130301 New Zealand Qualifications Authority 2017 NZQA registered unit standard 26490 version 2 Page 2 of 3 Outcome 2 Describe the structure and functions of peptides and proteins. Evidence requirements 2.1 Protein structure is described in terms of levels of organisation. Range 2.2 primary, secondary, tertiary, quaternary. Physiological functions of peptides and proteins are described in relation to their structure. Outcome 3 Explain the physical and chemical properties of proteins. Evidence requirements 3.1 Factors affecting protein solubility are explained in terms of their structure. Range 3.2 Denaturation and its causes are explained in terms of protein structure. Range 3.3 temperature, solvent, salt concentration, agitation, pH. Destructive and non-destructive methods are described in relation to protein determination. Range 3.5 temperature, pH, alcohol, surfactants, salts. Precipitation and its causes are explained in terms of protein structure. Range 3.4 pH, ionic strength, temperature. two of – biuret, Lowry, UV-absorption, Bradford dye binding, turbidometry. A method for the determination of amino acid composition is described in relation to proteins. Replacement information This unit standard replaced unit standard 8055. Planned review date 31 December 2018 NZQA National Qualifications Services SSB Code 130301 New Zealand Qualifications Authority 2017 NZQA registered unit standard 26490 version 2 Page 3 of 3 Status information and last date for assessment for superseded versions Process Version Date Last Date for Assessment Registration 1 17 September 2010 N/A Rollover 2 27 January 2015 N/A Consent and Moderation Requirements (CMR) reference 0152 This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do. Please note Providers must be granted consent to assess against standards (accredited) by NZQA, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment. Industry Training Organisations must be granted consent to assess against standards by NZQA before they can register credits from assessment against unit standards. Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards. Requirements for consent to assess and an outline of the moderation system that applies to this standard are outlined in the Consent and Moderation Requirements (CMR). The CMR also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements. Comments on this unit standard Please contact NZQA National Qualifications Services [email protected] if you wish to suggest changes to the content of this unit standard. NZQA National Qualifications Services SSB Code 130301 New Zealand Qualifications Authority 2017