Which type of diabetes mellitus is characterized by an autoimmune destruction of pancreatic beta cells, leading to an absolute deficiency of insulin production?
Type 1 diabetes mellitus.
Type 2 diabetes mellitus.
Gestational diabetes mellitus.
Prediabetes.
The Correct Answer is A
Type 1 diabetes mellitus is characterized by an autoimmune process in which the body's immune system destroys the pancreatic beta cells responsible for producing insulin. This results in an absolute deficiency of insulin, requiring exogenous insulin administration for glycemic control.
Incorrect choices:
b. This choice is incorrect. Type 2 diabetes mellitus is characterized by insulin resistance and impaired insulin secretion, rather than autoimmune destruction of beta cells.
c. This choice is incorrect. Gestational diabetes mellitus occurs during pregnancy and is not characterized by autoimmune destruction of beta cells.
d. This choice is incorrect. Prediabetes is a precursor to type 2 diabetes and involves impaired glucose tolerance, but it does not result from autoimmune destruction of beta cells.
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Related Questions
Correct Answer is A
Explanation
Type 1 diabetes mellitus is characterized by an autoimmune response that targets and destroys pancreatic beta cells, leading to an absolute deficiency of insulin production.
Incorrect choices:
b. This choice is incorrect. Type 2 diabetes mellitus involves insulin resistance and relative insulin deficiency, but not the autoimmune destruction of beta cells.
c. This choice is incorrect. Gestational diabetes mellitus occurs during pregnancy and is not characterized by autoimmune destruction of beta cells.
d. This choice is incorrect. Secondary diabetes mellitus is caused by other underlying medical conditions or factors and is not primarily characterized by autoimmune destruction of beta cells.
Correct Answer is C
Explanation
This statement is incorrect because it inaccurately suggests that insulin administration is only necessary for type 1 diabetes. While it is essential for type 1 diabetes, it can also be used in some cases of type 2 diabetes when other treatments are ineffective.
Incorrect choices:
a. This statement is correct. Insulin facilitates the entry of glucose into cells for energy.
b. This statement is correct. Insulin is produced by the pancreas and released in response to elevated blood sugar levels.
d. This statement is correct. In type 2 diabetes, insulin resistance occurs, meaning the body's cells become less responsive to the effects of insulin.
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