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What is the difference between first messenger and second messenger ?

Important Questions on Control and Co-ordination

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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Which one of the following statements about second messengers is correct?
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
The second messenger is formed during the functioning of which of the following hormone?
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Which of the following is correct w.r.t. the action of hormones which interact with membrane bound receptors?
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus)?
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
The hormones bound with the cell membrane of the target cell generate secondary messengers upon interaction with the receptor. Which of the following is not an example of secondary messenger?
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Second messenger is formed during functioning of which of the following hormone:-
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Which of the following hormone does not bind with extracellular receptor protein to stimulate hormone action?
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Steroid hormones
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
According to accepted concept of hormone action, if receptor molecules are removed from target organs, then the target organ will
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Which of the following act as a secondary messenger in hormonal action?
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Refer to the given diagrammatic representation of the mechanism of action of the hormone.
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Which one of the following is not a secondary messenger?
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Which one of the following is not a secondary messenger in hormone action?
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Hormone receptors
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Rate of hormone synthesis and secretion depends upon which of the following?
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
The given diagram represents the mechanism of action for two categories of hormones. Which of the following options correctly identifies the labels A to I?
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
According to the accepted concept of hormones action, if receptor molecules are removed from target organs, then the target organ will:
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Find the incorrect statement about external receptors.
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
The name second messenger is given to
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Biology>Human Physiology>Control and Co-ordination>Hormones as Messengers and Regulators
Insulin receptors are