Biology of Aging — MCQs

Mutations are due to changes in:

Which of the following statements best describes the mechanism of action of insulin on target cells?

Diabetes is associated with all of the following in the elderly EXCEPT:

Unfolded protein metabolism is associated with

Which of the following is the etiology of Werner syndrome?

Which of the following statements regarding cell aging is true?

Action of Telomerase is:

Which of the following is least likely to be considered a major independent risk factor for falls in the elderly?

Reversible dementia is a feature of which of the following conditions?

A 73-year-old woman presents to the clinic complaining of fatigue and feeling unwell. She notes the symptoms are worse on exertion but denies any chest pain or shortness of breath. Her past medical history is significant for hypertension and type 2 diabetes, both well-controlled on her current medications. On physical examination, vital signs are - blood pressure 135/80 mm Hg, pulse 72/min, and respiratory rate 10/min. The lungs are clear on auscultation, and heart sounds are normal. A CBC reveals a hemoglobin value of 9.5 g/dL and an MCV of 105 mm 3. Which of the following typically causes a macrocytic anemia?