Enzymes and Animal Physiology
Connect enzyme action with digestion and integrate respiration, organ systems, homeostasis, hormones and disease defence.
How to prepare for the current ESAT
Confirm your course combination, build no-calculator fluency from Mathematics 1 upward, and use official Pearson materials for authentic timing and interface rehearsal.
Core concepts
Concept 1
Relate enzyme specificity and active-site shape to temperature, pH and reaction rate.
Exam cue: Trace a substance or signal through the relevant organ system.
Concept 2
Connect nervous, respiratory, circulatory, digestive and excretory structures to transport and control.
Exam cue: State the controlled variable, detector, response and direction of correction.
Concept 3
Explain negative-feedback control of glucose, water and temperature and evaluate disease treatment or prevention.
Exam cue: Distinguish prevention, treatment and symptom management.
Risk pitfalls and guardrails
Saying enzymes are used up as reactants.
Guardrail: Do not use calculator-dependent shortcuts, import a fact outside the annual specification or overlook a unit, sign, scale or course-module boundary.
Confusing ventilation with gas exchange or cellular respiration.
Guardrail: Do not use calculator-dependent shortcuts, import a fact outside the annual specification or overlook a unit, sign, scale or course-module boundary.
Describing negative feedback as making a change more extreme.
Guardrail: Do not use calculator-dependent shortcuts, import a fact outside the annual specification or overlook a unit, sign, scale or course-module boundary.
Memory anchors
Enzyme
A biological catalyst with a specific active site.
Respiration
Cellular energy release is not the same as breathing.
Exchange surface
Large area, short path and maintained gradient support transfer.
Negative feedback
A deviation triggers responses that oppose the deviation.
Insulin and glucagon
Insulin lowers and glucagon raises blood glucose.
Immune memory
Vaccination prepares a faster later antibody response.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
Enzymes are?
Why does high temperature reduce many enzyme rates?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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