Chat with us, powered by LiveChat Digestion and Respiration (15 questions) | Abc Paper
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1.(05.01 MC)Air pressure is highest in the lungs during which of the following points (2 points)Beginning of inspiration, when lung volume is lowestBeginning of inspiration, when lung volume is highestBeginning of expiration, when lung volume is lowestBeginning of expiration, when lung volume is highest2.(05.01 MC)Which of the following gradients allow oxygen to leave the blood and enter body tissues and carbon dioxide to leave body tissues and enter the blood? (2 points)High concentration of oxygen in the blood; high concentration of carbon dioxide in the body tissuesLow concentration of oxygen in the blood; high concentration of carbon dioxide in the body tissuesHigh concentration of oxygen in the blood; low concentration of carbon dioxide in the body tissuesLow concentration of oxygen in the blood; low concentration of carbon dioxide in the body tissues3.(05.02 MC)A doctor hypothesizes that a patient’s digestive system is not properly secreting digestive enzymes. Which of the following would be a plausible diagnosis? (2 points)The pancreas is no longer secreting pepsin.The stomach is no longer secreting pepsin.The stomach is no longer secreting bile.The pancreas is no longer secreting bile.4.(05.02 MC)A person’s liver is not secreting bile. This would result in which of the following? (2 points)Lacteals are not able to absorb carbohydrates and proteins.Capillaries are not able to absorb carbohydrates and proteins.Lacteals are not able to absorb fats and fatty acids.Capillaries are not able to absorb fats and fatty acids.5.(05.02 MC)As food passes through the alimentary canal, the presence of chemical secretions will occur in which order? (2 points)Salivary enzymes; pancreatic juice; pepsinSalivary enzymes; pepsin; pancreatic juicePepsin; pancreatic juice; salivary enzymesPepsin; salivary enzymes; pancreatic juice6.(05.03 LC)Which class of macromolecules is generally hydrophobic? (2 points)ProteinsLipidsCarbohydratesNucleic acids7.(05.03 LC)Which of the following biological macromolecule is correctly paired with its main function in the body? (2 points)Lipids-tores glucose and are the cell’s energy reservesLipids-growth and repair of cellular structuresProteins-growth and repair of cellular structuresProteins-stores glucose and are the cell’s energy reserves8.(05.03 MC)You are a swimmer and you have a big race tomorrow. Which of the following foods might you want to eat the night before to adequately store energy? (2 points)Steak to load on proteinEggs to load on proteinPasta to load on carbohydratesBeans to load on carbohydrates9.(05.03 MC)Image Courtesy of 3DScience.comThe macromolecule pictured above could be part of which of the following? (2 points)DNAFatProteinEnzyme10.(05.03 LC)What is the function of an inhibitor in an enzyme-substrate reaction? (2 points)Activating the substrateDeactivating the productActivating an enzymeDeactivating an enzyme11.(05.04 MC)Which of the following correctly describes how cofactors differ from inhibitors? (2 points)Cofactors activate substrates, while inhibitors deactivate substrates.Cofactors deactivate substrates, while inhibitors activate substrates.Cofactors activate enzymes, while inhibitors deactivate enzymes.Cofactors deactivate enzymes, while inhibitors activate enzymes.12.(05.04 MC)Image Courtesy of 3DScience.comThe graph above shows the progress of an enzyme-catalyzed chemical reaction. Based on the graph, which of the following is true? (2 points)An inhibitor is being used in reaction A.An inhibitor is being used in reaction B.A substrate is being used in reaction A.A substrate is being used in reaction B.13.(05.04 MC)Image Courtesy of 3DScience.comThe graph above shows the progress of an enzyme-catalyzed chemical reaction. Based on the graph, this enzyme (2 points)works optimally at 5°Cworks optimally at 33°Cbegins to denature above 25°Cbegins to denature below 20°C14.(05.01 HC)Describe how oxygen and carbon dioxide diffuse both between the 1) alveoli and the blood, and 2) blood and the body tissues. Include in your description the diffusion gradients present for both gases at both locations. (5 points)15.(05.03 HC)List the four classes of biological macromolecules. Then describe the basic structural components of each macromolecule class and the function of each class within the body. (5 points)

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