Sickle cell anemia (a red blood cell disease) probably changed to protect humans from? (Hint: Think realistically and hypothetically) a. malnutrition b. African sleeping sickness c. diarrhea d. malaria e. b & d
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Sickle cell anemia (a red blood cell disease) probably changed to protect humans from? (Hint: Think realistically and hypothetically)
a. malnutrition
b. African sleeping sickness
c. diarrhea
d. malaria
e. b & d
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- The primary organ that regulates our hunger is? A. The liver B. The stomach C. The brainEvery day, about 9 l of water comes to the gastrointestinal tract. What proportion of the water has been reabsorbed when the intestinal contents reach the rectum? a) 50% b) 99% c) 1% d) 85% e) 10%Which of the following is True?a. The human stomach maintains a very high pH.b. Gastric glands in the stomach wall secrete pepsinogen. c. Bile is released into the stomach from the liver.d. Many different nutrients are absorbed through the stomach.
- Which of the following is FALSE? A. Bile is a fat molecule-busting enzyme B. Vitamins are organic compounds. C. Most plants have a different composition of amino acids compared to animals. D. Water reabsorption is one of the main functions of the large intestines.The thirst mechansim stimulates your desire to drink fluids in response to increased salt in your blood or a decrease in___? A. Salt in intracellular fluids B. Tissue dryness C. Blood pressure and blood volume D. The amount of potassium retained intracellularlyIn general, smaller animals eat __________ total food than larger animals in a single day, and the relative proportion of food they need to metabolize per unit number of cells is ________. A. more; equal B. less; greater C. less; smaller D. more; greater E. less; equal
- Which of these statements best describes bile salts? a)Acts as hormone in the liver and small intestine b)Synthesized in the liver, stored in the gall bladder, active in the small intestine c)Synthesized in the gall bladder, stored in the liver, active in the small intestine d)Increases the rigidity of cell membranesCertain amino acids are essential to the diet of animals because they a. are the most important source of stored energy. b. are needed to make stored fats used during hibernation and migration. c. cannot be synthesized directly by the body. d. prevent over-nourishment.Explain briefly the physiological reason for this survival rule: When left in an island with little or no freshwater, never eat solid food in large volume; eat only small portions at a time.
- Which of the following does (do) not occur during the fasting state? a) inhibition of lipolysis b) an increase in the concentration of albumin-bound fatty acids in the blood c) both a and b d) neither a nor bWhat is currently happening for the first time in human history in relation to obesity? A. In most countries in the world, hunger kills more people than obesity. B. In most countries in the world, infectious disease kills more people than obesity. C. In most countries in the world, obesity kills more people than hunger. D. In most countries in the world, cancer kills more people than obesity.Sailors used to pack a few food items with a high caloric load to have the energy to survive the physically demanding deck work when crossing oceans. However, they felt weak after a few weeks at sea. What type of nutrients is likely missing?Do not be specific. Think of the big question, and write a short answer.