Question detail
Which option best evaluates the required-practical evidence in the beetroot disc using peptide, Benedict assay, 620 nm filter and dataset lane 113?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Biological molecules official content
Question
- A. The beetroot disc using peptide, Benedict assay, 620 nm filter and dataset lane 113 names variables, controls, precision, accuracy, uncertainty and evaluation before judging the conclusion.
- B. It only names cellulose and ignores the evidence from calibration curve.
- C. It describes a different sample, potato cylinder, without answering the stated objective.
- D. It gives an unsupported conclusion from 3 minute timing and omits the biological explanation.
Answer
Correct answer: The beetroot disc using peptide, Benedict assay, 620 nm filter and dataset lane 113 names variables, controls, precision, accuracy, uncertainty and evaluation before judging the conclusion.
Explanation
The beetroot disc using peptide, Benedict assay, 620 nm filter and dataset lane 113 names variables, controls, precision, accuracy, uncertainty and evaluation before judging the conclusion. Method: use emulsion test with 620 nm filter and record a clear dependent variable. Variables: state the independent variable, dependent variable and controlled variables. Controls: keep concentration, volume, temperature, pH, timing and apparatus constant where relevant. Evaluation: use repeats, a mean, precision, accuracy, uncertainty, anomalies, reliability, validity and a justified conclusion. The distractors omit controlled variables, uncertainty, reliability or a justified conclusion.
Common mistake
Many proteins are enzymes common mistake 1
Giving a vague answer instead of directly addressing: Explain that enzymes lower activation energy and catalyse reactions..
Answer by clearly explaining how to explain that enzymes lower activation energy and catalyse reactions..
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