sub90 ESATsub90 ESAT
Sign InStart Pace Check
sub90 ESATsub90 ESAT SyllabusARCH-B-14
Full Lesson Practice Questions →
UAT-UK SPEC: B9MODULE: BIOLOGYTOPIC ID: ARCH-B-14

Nervous Reflex Arc, Synaptic Neurotransmission & Endocrine Homeostasis (Insulin/Glucagon, Thermoregulation & Menstrual Cycle)

Master Nervous Reflex Arc, Synaptic Neurotransmission & Endocrine Homeostasis (Insulin/Glucagon, Thermoregulation & Menstrual Cycle) on the ESAT Biology paper. Traditional classroom derivations waste valuable seconds. Using the 2-step Sub-90 invariant elimination method compresses solve time to 35s, saving +100s per question.

Standard Classroom Time
135s
Textbook multi-line derivations bleed exam clock
Sub-90 Target Pace
35s
Comfortably below the 88.8s per-question limit
Time Saved for Review
+100s
Banks clock buffer across 27 questions

2-Step Sub-90 Shortcut Formula

How to eliminate intermediate algebra and solve under 45 seconds.

Launch Interactive Lesson
STEP 1 • SETUP INVARIANT (LINE 1)10–15s
Pathway = Sensory (dorsal root ganglion) →\to Relay →\to Motor (ventral root) (1 & 2 true); bypasses conscious brain for speed (not 3)   ⟹  \implies 1 and 2 only.

Establish the structural invariant and eliminate impossible options immediately.

STEP 2 • FAST SOLVE (LINE 2)15–25s
Pathway = Sensory (dorsal root ganglion) →\to Relay →\to Motor (ventral root) (1 & 2 true); bypasses conscious brain for speed (not 3)   ⟹  \implies 1 and 2 only.

Evaluate the simplified expression using integer factoring or unit elimination.

Distractor Trap Forensics

The predictable cognitive traps engineered by examiners into the wrong options.

TRAP #1multi_statement_linchpin_foil

Statement claiming skin capillaries or arterioles move physically closer to or further from the skin surface during thermoregulation

Blood vessels are fixed in position and NEVER move toward/away from the skin surface; smooth muscle in arteriole walls relaxes (vasodilation) or contracts (vasoconstriction) to alter blood flow through surface capillaries.

Sub-90 Fix: Test invariants before expanding equations.
TRAP #2multi_statement_linchpin_foil

Claiming electrical impulses jump across the synaptic cleft (instead of chemical neurotransmitter diffusing across the cleft to post-synaptic receptors)

Synaptic transmission is strictly chemical (vesicle exocytosis -> diffusion of neurotransmitter -> receptor binding -> new electrical impulse), ensuring unidirectional flow.

Sub-90 Fix: Test invariants before expanding equations.
TRAP #3sign_or_direction_flip

Swapping insulin (beta cells -> converts glucose to insoluble glycogen in liver/muscle when blood glucose is HIGH) with glucagon (alpha cells -> converts glycogen to glucose when blood glucose is LOW)

Confusing the hyperglycaemic hormone (glucagon) with the hypoglycaemic hormone (insulin) or confusing glycogen with glucagon.

Sub-90 Fix: Test invariants before expanding equations.

Try 1 Timed Question: Nervous Reflex Arc, Synaptic Neurotransmission & Endocrine Homeostasis (Insulin/Glucagon, Thermoregulation & Menstrual Cycle)

Experience the Pearson VUE exam simulator with live split stopwatch.

Full Lesson All 15 Questions (ARCH-B-14)
sub90 ESAT Stopwatch Emblemsub90 ESAT
ARCH-B-14: Nervous Reflex Arc, Synaptic Neurotransmission & Endocrine Homeostasis (Insulin/Glucagon, Thermoregulation & Menstrual Cycle) (Sample)Biology
00:00.0
SUB-90 ZONE (<30S)
0.0s30s Sub-9090s ESAT Budget150s Classroom
Question 1 of 1ARCH-B-14 (6-Card Lesson)Format: 1-2-3 Multi-Statement Combination
1-5Choose•FFlag•SScratchpad•EnterNext
Question 1 of 1 • 90s Target

Ready to Start Question 1?

The question stem, diagram, and answer options are hidden behind this pre-start gate. When you click below, the question will reveal and your 90-second split stopwatch will immediately begin ticking.

Biology•ARCH-B-14•1-2-3 Multi-Statement
or press Enter to start
TOPIC MASTERY

Lock in Nervous Reflex Arc, Synaptic Neurotransmission & Endocrine Homeostasis (Insulin/Glucagon, Thermoregulation & Menstrual Cycle) with 15 Dedicated Questions

Solve full-length questions from our verified question bank, review distractor traps, and verify your pace.

Start Practice Drill →View Specification B9 Guide