Why is fat the body's preferred way of storing energy?
What will be an ideal response?
Glycogen, which is largely stored in the liver and muscles, might be expected to be the body's preferred mode of energy storage because it is so readily converted to glucose - the body's main source of energy.
(1) a gram of fat can store almost as much energy as a gram of glycogen, and
(2) glycogen, unlike fat, attracts and hold substantial quantities of water
Consequently, if all your fat calories were stored as glycogen, you would likely weight well over 600 pounds
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Foraminiferans
a. are unicellular heterotrophs. b. are marine. c. are shelled. d. have hundreds of thin pseudopods. e. are all of these.
Which statement best describes the phenomenon of antibiotic resistance in bacteria?
A) For a particular antibiotic, all bacteria are either completely resistant or completely sensitive. B) When a type of bacteria is resistant to antibiotics, it's resistant to all antibiotics. C) Resistance is a matter of degrees; resistance can be partial or total, and resistance to each antibiotic is a separate trait. D) Resistance to antibiotics is a trait that didn't exist before antibiotics were developed for pharmaceutical use.
Using the data in Figure 53-3, the cause of the decline of the wolf population in 1982 was:a
a sharp decrease in food supply. b. a decrease in the intrinsic rate of increase for the wolf population. c. competition with a newly introduced predator. d. introduction of a disease organism. e. cannot be determined from the data provided.
What is true about the half-life of 14C?
A. The half-life never changes over time. B. It takes 5,730 years for half of 14C to be converted to 14N. C. It can be employed in the radioisotopic dating of fossils. D. All of these are correct.