Chapter 2 MCQs

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. Which of the following is NOT a means of communication between eukaryotic cells?

Exchange of endogenous molecules via gap junctions correct incorrect

Exchange of nuclear material across the cell membrane correct incorrect

Secretion of hormones into the circulatory system correct incorrect

Secretion of neurotransmitters into synaptic cleft correct incorrect

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. Which of the following is NOT a type of cellular receptor?

Tyrosine kinase receptor correct incorrect

G protein-coupled receptor correct incorrect

Endocrine receptor correct incorrect

Nuclear receptor correct incorrect

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. The β-adrenoreceptor is an example of which type of receptor?

G protein-coupled receptor correct incorrect

Tyrosine kinase receptor correct incorrect

Voltage-gated ion channel correct incorrect

Ligand-gated ion channel correct incorrect

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. Which of the following ligand-receptor interactions has the greatest bond strength?

Van der Waals forces correct incorrect

Dipole-dipole interaction correct incorrect

Hydrogen bond correct incorrect

Hydrophobic bond correct incorrect

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. Which of the following is a nuclear receptor?

Insulin receptor correct incorrect

Oestrogen receptor correct incorrect

Nicotinic acetylcholine receptor correct incorrect

α-Adrenoreceptor correct incorrect

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. Ion channel receptors do NOT contain which of the following structures?

A transmembrane domain correct incorrect

An extracellular ligand-binding domain correct incorrect

A DNA-binding domain correct incorrect

An intracellular anchoring site correct incorrect

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. Which of the following cellular responses is NOT produced in response to stimulation of a G protein-coupled receptor?

Formation of a gene transcription complex correct incorrect

Formation of cyclic AMP correct incorrect

Formation of phospholipase C correct incorrect

Formation of diacylglycerol (DAG)l correct incorrect

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. Which of the following is a primary messenger?

Cyclic AMP correct incorrect

Phospholipase C correct incorrect

Erythropoietin (EPO) correct incorrect

Thyroid-stimulating hormone (TSH) correct incorrect

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. Which of the following is NOT an excitatory receptor?

Nicotinic acetylcholine receptor correct incorrect

Benzodiazepine receptor correct incorrect

α-Adrenoreceptor correct incorrect

5-HT receptor correct incorrect

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. Which of the following processes is NOT involved in the stimulation of tyrosine kinase receptors?

Ligand binding to an extracellular domain correct incorrect

Dimerization of receptors correct incorrect

Production of a second messenger correct incorrect

Phosphorylation of tyrosine residues correct incorrect