38. the specificity of hormones is due to a. molecular rearrangement at the site

Question

38. the specificity of hormones is due to

a. molecular rearrangement at the site of action

b. specific binding of hormones to plasma proteins

c. specialization of target cell receptors

d. specialized hormone secretion

e. discrete inactivation of hormones by the liver or kidney

44. which of the following statements concerning endocytosis is incorecct

a. phagocytosis refers to the endocytosis of large multi-molecular particles such as bacteria or cellular debris

b. endocytosis provides a way to add specific components to the plasma membrane

c. by means of endocytosis, a particle can gain entry to the interior of the cell without actually passing through the plasma membrane

d. endocytosis can be triggered by the binding of a particle to a receptor site on the plasma membrane

e. the endocytotic vesicle may be degraded by lysosomes within the cell

77. In addition to eicosanoids, three other classes of hormones are:

a. amines, free fatty acids, and peptides

b. free fatty acid, peptides, and steroids

c. amines, phopolipids and steroid

d. amines, peptides and steroid

e. amines, steroid and phospolipids

Explanation / Answer

38

c. specialization of target cell receptors

44

b. endocytosis provides a way to add specific components to the plasma membrane

77.

d. amines, peptides and steroid

Fact based questions just a little explination

In question regarding phagocytosis is that the vescicle internalisation by endocytosis does not include additions to plasma membrane ; additions specifically occur in membrane fusions or vesicle mixing/fusing.

Hope it helps feel free to comment and discuss ... Regards

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