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AP Intermediate 1st Year Neural Control and Chemical Coordination — practice questions

Explore 50 free Neural Control and Chemical Coordination questions in AP Intermediate 1st Year Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Neural Control and Chemical Coordination questions and exercises with answers

Showing questions 1–30 of 50.

The resting membrane potential of a typical neuron is approximatelyRead the answer and worked solution →The rapid depolarisation phase of an action potential is caused byRead the answer and worked solution →Signals between two neurons across a chemical synapse are transmitted byRead the answer and worked solution →The neurotransmitter released at the NEUROMUSCULAR JUNCTION is:Read the answer and worked solution →The cerebral lobe primarily responsible for VISION is the:Read the answer and worked solution →The 'fight-or-flight' response is primarily mediated by the:Read the answer and worked solution →In the retina of the human eye, the COLOUR + sharp daylight vision is mediated by:Read the answer and worked solution →PARKINSON'S DISEASE is caused primarily by:Read the answer and worked solution →Match each hormone to its source gland.Read the answer and worked solution →Flip pairs — match cranial nerve to function.Read the answer and worked solution →NEET · Biology · Hormone ↔ GlandRead the answer and worked solution →NEET · Biology · Endocrine or Exocrine GlandRead the answer and worked solution →The cerebral cortex looks grey because it is packed with:Read the answer and worked solution →Your body temperature and the urge to eat and drink are set by the:Read the answer and worked solution →The four round swellings on the dorsal midbrain are the:Read the answer and worked solution →Breathing, cardiovascular reflexes and gastric secretion are controlled by the:Read the answer and worked solution →Pulling your hand off a hot pan without thinking is a:Read the answer and worked solution →In a reflex arc the afferent neuron enters the spinal cord through the:Read the answer and worked solution →Smell receptors in the nose are called:Read the answer and worked solution →Catch the forebrain partsRead the answer and worked solution →Pop the neuron partsRead the answer and worked solution →Steer into the neural laneRead the answer and worked solution →Slice the brain wordsRead the answer and worked solution →Forebrain or hindbrainRead the answer and worked solution →Which brain part does itRead the answer and worked solution →One word is wrongRead the answer and worked solution →Neural bingoRead the answer and worked solution →What are the secretions of ductless glands called?Read the answer and worked solution →The hypothalamus is the basal part of which brain region?Read the answer and worked solution →GnRH from the hypothalamus stimulates the pituitary to release which hormones?Read the answer and worked solution →

Worked practice questions

The resting membrane potential of a typical neuron is approximately

  1. +70 mV
  2. +30 mV
  3. 0 mV
  4. −70 mV
Show answer and solution

Correct answer: D. −70 mV

About −70 mV (inside negative relative to outside). Maintained by the Na⁺/K⁺ pump and the membrane's selective K⁺ permeability.

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The rapid depolarisation phase of an action potential is caused by

  1. K⁺ flowing out of the cell
  2. Na⁺ rushing into the cell through voltage-gated channels
  3. Cl⁻ flowing into the cell
  4. active pumping of Na⁺ out
Show answer and solution

Correct answer: B. Na⁺ rushing into the cell through voltage-gated channels

Voltage-gated Na⁺ channels open when the membrane is depolarised to threshold. Na⁺ floods in, driving the membrane potential to about +30 mV — the upstroke of the action potential.

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Signals between two neurons across a chemical synapse are transmitted by

  1. direct electrical contact
  2. neurotransmitters released into the synaptic cleft
  3. diffusion of Na⁺ ions
  4. passive heat exchange
Show answer and solution

Correct answer: B. neurotransmitters released into the synaptic cleft

The action potential triggers vesicles in the axon terminal to release neurotransmitter into the cleft. The neurotransmitter diffuses to receptors on the next neuron, generating a postsynaptic potential.

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