When blood glucose levels rise, insulin signals cells to take up glucose, removing it from the blood. Diabetes mellitus is a disorder caused by a dysfunction in the insulin signaling system. There are two types of diabetes
People with type 1 diabetes must take insulin regularly, usually through injection. People with type 2 diabetes are not helped by supplemental insulin. What does this tell you about where the defect might be in these two disorders?
A) Type 1 diabetes is probably caused by defective insulin receptors.
B) Type 2 diabetes is probably caused by underproduction of insulin.
C) Type 1 diabetes is probably caused by underproduction of insulin.
D) Type 2 diabetes is probably caused by overproduction of insulin.
C
You might also like to view...
Which members of Platyhelminthes are parasitic?
a. Planarians and cnidarians b. Flukes and planarians c. Flukes and cnidarians d. Planarians and tapeworms e. Flukes and tapeworms
The molecule that traps the sun's energy is
A. ATP. B. glyceraldehyde-3-phosphate. C. chloroplast. D. chlorophyll.
Consider the model for equilibrium number of species in a mainland (continental) region, as illustrated in Figure 20.23. What does this model say about the rate of extinction?
A) The rate of extinction decreases as a linear function of the number of species. B) The rate of extinction increases as a linear function of the number of species. C) The rate of extinction increases as a function of the number of species, but the rate of increase accelerates as the number of species becomes large.
Which of the following areas of investigation is considered a major driver of modern microbiology?
A) microbial classification B) industrial microbiology C) the etiology of infectious disease D) genetics E) food preparation