2024 BIO 156 Exam 3 Practice Questions and Answers Solved 100% Correct!!

What is the major function of bile? a. Emulsification of fats b. Digestion of fats c. Stimulation of stomach secretions d. Inhibition of stomach contractions e. Assist amino acid absorption - Answer-a. Emulsification of fats Histamine: a. Causes local blood vessels to constrict. b. Causes local blood vessels to restrict fluid loss. c. Decreases blood flow to the affected area. d. Causes local swelling of the affected area. e. Causes the blood pressure in the body to increase. - Answer-d. Causes local swelling of the affected area Absorption of water is one major function of which of the following structures? a. cecum b. esophagus c. appendix d. rectum e. colon - Answer-e. colon The pulmonary veins deliver bloods to which of the following? a. right atrium b. left atrium c. right ventricle d. left ventricle e. lungs - Answer-b. left atriumWhat happens to nutrient macromolecules in your digestive tract? a. They are absorbed whole and are broken down to monomers in the cells that ultimately use them. b. The digestive breakdown of macromolecules is keyed to the body's need for monomers; only the monomers that are immediately needed are produced. c. Nucleic acids and triglycerides (which diffuse across the plasma membrane) are not digested to monomers; other macromolecules are. d. Proteins and nucleic acids are digested to monomers before absorption; energy-storage macromolecules (starched and fat) are absorbed whole. e. All nutrient macromolecules are digested to monomers before absorption. - Answer-e. All nutrient macromolecules are digested to monomers before absorption. The alimentary canal is best defined as which of the following? a. The compartment in which an animal digest its food. b. A tube-shaped digestive compartment with either one or two openings. c. A tube-like digestive compartment that has two openings and consists, at least a mouth, stomach, and intestine. d. A digestive cavity in which food is churned and mixed. e. A tube-shaped digestive compartment that has two openings and through which food moves in one direction. - Answer-b. A tube-shaped digestive compartment with either one or two openings.