Question detail
ET-G7 energy-transfer MCQ: Which interpretation of ATP hydrolysis model best supports Required practical 9: investigate the effect of a named variable on respiration rate in cultures of single-celled organisms?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Energy transfers official content
Question
- A. ET-G7: interpret the ATP hydrolysis model by linking it to energy transfer to active transport; identify the independent variable, dependent variable and controlled variable (membrane surface area); use repeats, sample size, representativeness and bias checks when evaluating uncertainty and validity.
- B. ET-G7: report only a topic keyword and ignore the data pattern in the ATP hydrolysis model.
- C. ET-G7: change membrane surface area as well as the tested factor, then avoid evaluating uncertainty or reliability.
- D. ET-G7: claim ATP is created from nothing rather than transferred through chemical reactions and gradients.
Answer
The correct answer is: ET-G7: interpret the ATP hydrolysis model by linking it to energy transfer to active transport; identify the independent variable, dependent variable and controlled variable (membrane surface area); use repeats, sample size, representativeness and bias checks when evaluating uncertainty and validity.
Explanation
The correct option is ET-G7: interpret the ATP hydrolysis model by linking it to energy transfer to active transport; identify the independent variable, dependent variable and controlled variable (membrane surface area); use repeats, sample size, representativeness and bias checks when evaluating uncertainty and validity. This supports Required practical 9: investigate the effect of a named variable on respiration rate in cultures of single-celled organisms because it names the mechanism, uses the evidence, identifies variables and controlled conditions, and evaluates sample size, representativeness, bias, uncertainty and validity.
Common mistake
energy transfers practical reasoning mistake
Describing Required practical 9: investigate the effect of a named variable on respiration rate in cultures of single-celled organisms without naming variables, controls or evaluation of the evidence.
For practical reasoning, state the method, independent variable, dependent variable and one controlled variable; keep the control constant; then evaluate validity, reliability, accuracy, precision, uncertainty, risk and possible improvements. Then link the practical evidence to Required practical 9: investigate the effect of a named variable on respiration rate in cultures of single-celled organisms.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.