Describe the case of the child with no leptin
What will be an ideal response?
> normal weight at birth, but soon began to increase at an excessive rate
> demanded food continually and was disruptive when denied food
> as a result of her extreme obesity, deformities of her legs developed, and surgery was required
> 9 yrs of age when referred for treatment
>> weighed 210 pounds at this point, and was still increasing at an alarming rate
>found to be homozygous for ob been and had no detectable leptin, thus leptin therapy was commenced
> leptin therapy immediately curtailed the weight gain
>> began to eat less, and lost weight steadily over the 12-month period of the study (about 36 pounds) almost all in the form of fat
>
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Which of the following groups of molecules commonly serve as sources of energy for animals?
A. proteins, lipids, and carbohydrates B. proteins and carbohydrates C. carbohydrates and lipids D. proteins and lipids E. carbohydrates, nucleic acids, and lipids
On which of the following processes does
ADH have its effect?
a. filtration b. secretion c. reabsorption d. excretion e. elimination
The ranges of black bears and brown bears overlap. However, black bears spend most of their time in the woods and
brown bears spend most of their time along the river. Which of the following best describes why black and brown bears do not interbreed? a. habitat isolation b. temporal isolation c. biological isolation d. evolutionary isolation e. environmental isolation
Prokaryotic cells do NOT have
A) genes. B) cilia. C) ribosomes. D) cytoplasm. E) flagella.