12 Questions
What is the main determinant of how a hormone exerts its biological effect?
The chemical nature of the hormone
Where are the receptor sites for hormones typically located?
Cell membranes or cytoplasm
What determines the specificity of hormone action on particular cells?
The presence or absence of receptors for that hormone in a given cell
Which class of hormones typically combine with receptors located in the plasma membrane of target cells?
Peptides or proteins
What happens to a cell that lacks the receptor for a specific hormone?
It remains unaffected by the hormone
Why do hormones released into the general circulation have effects only on specific cells?
Due to their interaction with specific receptors in target cells
What type of molecules are peptides, proteins, and amino acid derivatives in the context of hormone-receptor interactions?
Hydrophilic
Which of the following is a process that may be altered by hormones according to the text?
Activation of sodium-potassium pump
What is the term used for cAMP in the described process of hormone influence on target cells?
Secondary messenger
Which of the following may be altered by hormones and is important in the growth or division of cells according to the text?
DNA metabolism
What is the term for substances that can function as second messenger molecules within cells?
Secondary messengers
What happens when an activated receptor triggers a series of biochemical reactions according to the text?
A biological response is produced
Learn about the classification of hormones into three major classes and understand how the chemical nature of a hormone determines its biological effect. Explore the mechanism of hormone action and the importance of hormone-receptor interaction.
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