14. What is the difference between anabolism and catabolism? (p. 514) ANSWER:
Complex molecules are being created from the combination of simple substances during anabolism. In contrast, during catabolism, complex molecules are being split apart.
15. Where are triglycerides stored in the body? (p. 514) ANSWER:
Triglycerides are being stored in the body fat and in the liver.
16. In what ways can a person lose heat to or gain heat from the surroundings? How is it possible for a person to lose heat on a sunny beach when the temperature is 40?C (104?F) and the humidity is 85%? (p. 518) ANSWER:
About 60% of the energy released in catabolism in converted into heat. It is possible for a person to lose heat when the temperature is high if the respective person's body had not been supplied with enough external sources of energy for the cells to synthesize ATP.
Week 6
Chapter 14
17. Name several substances transported by blood. (p. 346) ANSWER:
Oxygen, carbon dioxides, and nutrients are all transported by blood.
18. How is blood protective? (p. 346) ANSWER:
Blood clots prevent blood from being lost in excess. Also, it contains white blood cells which protect the body against disease by carrying on phagocytosis and producing proteins fighting the disease.
19. What is erythropoiesis? How does erythropoiesis affect hematocrit? What factors speed up or slow down erythropoiesis? (p. 354) ANSWER:
The term erythropoiesis refers to the formation of red blood cells. Erythropoiesis can influence hematocrit by causing it to rise or to fall. The amount of oxygen that the blood can carry depends on the presence of red blood cells, and, if it decreases,...
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