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CBSE Class 11 (Science) Neural Control and Chemical Coordination — practice questions — page 5

Explore 172 free Neural Control and Chemical Coordination questions in CBSE Class 11 (Science) 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 121–150 of 172.

Gastrin stimulates the gastric glands to secrete:Read the answer and worked solution →Secretin acts on the exocrine pancreas to stimulate release of:Read the answer and worked solution →Most intracellular hormone receptors are located in the:Read the answer and worked solution →Which of these is a steroid hormone?Read the answer and worked solution →Epinephrine belongs to which chemical group of hormones?Read the answer and worked solution →Hormones that bind membrane-bound receptors usually act by generating:Read the answer and worked solution →Hormone-receptor complexes of steroid hormones mainly regulate:Read the answer and worked solution →How is the neural system of Hydra organised?Read the answer and worked solution →In which animals is a brain present along with a number of ganglia?Read the answer and worked solution →Which two parts make up the human central neural system?Read the answer and worked solution →The autonomic neural system sends impulses from the CNS to which organs?Read the answer and worked solution →Which three major parts make up a typical neuron?Read the answer and worked solution →Each branch of an axon ends in which bulb-like structure?Read the answer and worked solution →Synaptic vesicles in the synaptic knob contain which chemicals?Read the answer and worked solution →Which cells form the myelin sheath around myelinated axons?Read the answer and worked solution →Myelinated nerve fibres are found mainly in which nerves?Read the answer and worked solution →At rest, which ion does the axonal membrane almost block?Read the answer and worked solution →In a resting neuron, the axoplasm has a high concentration of which ion?Read the answer and worked solution →The sodium-potassium pump moves how many Na+ out for how many K+ in?Read the answer and worked solution →At rest, what charge does the outer surface of the axonal membrane carry?Read the answer and worked solution →When a stimulus is applied, the membrane becomes freely permeable to which ion?Read the answer and worked solution →What happens to the polarity at the stimulated site as Na+ rushes in?Read the answer and worked solution →The potential difference at a depolarised site is called what?Read the answer and worked solution →Which event restores the resting potential after depolarisation?Read the answer and worked solution →How is a nerve impulse conducted along an axon?Read the answer and worked solution →What are the two types of synapses?Read the answer and worked solution →Which synapse transmits impulses faster?Read the answer and worked solution →How common are electrical synapses in the human neural system?Read the answer and worked solution →What separates pre- and post-synaptic membranes at a chemical synapse?Read the answer and worked solution →What do synaptic vesicles do when an impulse reaches the axon terminal?Read the answer and worked solution →

Worked practice questions

Gastrin stimulates the gastric glands to secrete:

  1. Bile and lipase
  2. Bicarbonate and water
  3. Insulin and glucagon
  4. HCl and pepsinogen
Show answer and solution

Correct answer: D. HCl and pepsinogen

Gastrin acts on gastric glands and stimulates hydrochloric acid and pepsinogen secretion.

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Secretin acts on the exocrine pancreas to stimulate release of:

  1. Water and bicarbonate
  2. Glucagon and insulin
  3. Pepsinogen and HCl
  4. Bile pigments and salts
Show answer and solution

Correct answer: A. Water and bicarbonate

Secretin stimulates the exocrine pancreas to release water and bicarbonate ions.

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Most intracellular hormone receptors are located in the:

  1. Nucleus
  2. Mitochondria
  3. Golgi body
  4. Cell membrane
Show answer and solution

Correct answer: A. Nucleus

Intracellular receptors are mostly nuclear receptors found in the nucleus.

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