Critical and Creative Thinking Questions
1. Two teenage boys, Bob and Bill, are diagnosed with diabetes.
Bob is slightly underweight for his age, while Bill is over-
weight, possibly obese. Bob must take daily insulin injections
to control his diabetes, while Bill must watch his diet and take
oral medications. Identify the reasons for the different treat-
ments and explain what is going on in each of their bodies.
2. Joe's wife of 20 years has noticed changes in his appearance.
When they were married at age 18, Joe was a tall, handsome
teenager. As Joe has aged, his hands, feet, and jaws have
thickened, and his head has become elongated. What might
be happening to Joe? What tests might you conduct to sup-
port your hypothesis?
3. A scientist has two cultures of the same type of cell. She
administers Hormone A to one culture and Hormone B to the
other. She notices that Hormone A has an immediate effect on
the culture, while the culture with Hormone B takes about 90
minutes to show any activity. When the scientist examines pro-
tein synthesis in both cultures, she notices that new proteins
are made only in the culture exposed to Hormone B. Explain
the differences between the two hormones and indicate what
types they might be.
4. Laura recently suffered a head injury in a car accident. As she
is recovering, she notices that she is always thirsty, urinates
frequently, and passes large volumes of urine. If she does not
drink often, she feels weak, faint, and nauseated. What might
have happened to Laura, and what is going on in her body that
would explain these signs and symptoms?
5. Michael is a 45-year-old man who was recently diagnosed
with high blood pressure. His physician prescribed a drug
called an angiotensin-converting enzyme (ACE) inhibitor. How
will the drug affect Michael's ability to withstand dehydra-
What is happening in this picture?
All these girls are 15 years old, but one of them looks very differ-
ent from the others. At only 23.5 inches tall, Jyoti Amge is alleg-
edly the world's smallest person.
1. W hat endocrine problem m ight m ake Jyo ti so much sm aller
than the other girls?
2. How w ould it affect her size?