Digestion and Respiration (15 questions)

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1.

(05.01 MC)

Air pressure is highest in the lungs during which of the following points (2 points)


2.

(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)



3.

(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)



4.

(05.02 MC)

A person’s liver is not secreting bile. This would result in which of the following? (2 points)



5.

(05.02 MC)

As food passes through the alimentary canal, the presence of chemical secretions will occur in which order? (2 points)



6.

(05.03 LC)

Which class of macromolecules is generally hydrophobic? (2 points)



7.

(05.03 LC)

Which of the following biological macromolecule is correctly paired with its main function in the body? (2 points)



8.

(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)



9.

(05.03 MC)

This figure shows the chemical structure of a molecule. The left side of the molecule contains three vertically oriented carbons bonded to each other. Each carbon is also bonded on its right side to an oxygen. Each oxygen is itself bonded on its right side to a long chain of carbons and hydrogens. Therefore, there are three of these long carbon-hydrogen chains within the molecule.

Image Courtesy of 3DScience.com

The macromolecule pictured above could be part of which of the following? (2 points)



10.

(05.03 LC)

What is the function of an inhibitor in an enzyme-substrate reaction? (2 points)



11.

(05.04 MC)

Which of the following correctly describes how cofactors differ from inhibitors? (2 points)



12.

(05.04 MC)

This figure is a graph. The y-axis is labeled energy consumed during reaction. The y-axis is labeled reaction progress. The left end of the x-axis is labeled start, while the right end is labeled end. There are two plot lines on the graph. The blue plot line is labeled reaction A. The red plot line is labeled reaction B. Both reaction A and reaction B reaction start about three quarters of the way up the y-axis. The blue plot line increases sharply at the start of the reaction, peaking at the top of the y-axis. Reaction A then quickly dives down toward the x-axis about halfway through the reaction, after which it levels out until the end of the reaction. Reaction B has the same shape plot line as reaction A. The main difference is that reaction Bs plot line has a significantly lower peak at the start of reaction.

Image Courtesy of 3DScience.com

The graph above shows the progress of an enzyme-catalyzed chemical reaction. Based on the graph, which of the following is true? (2 points)



13.

(05.04 MC)

This figure is a graph. The y-axis is labeled

Image Courtesy of 3DScience.com

The graph above shows the progress of an enzyme-catalyzed chemical reaction. Based on the graph, this enzyme (2 points)



14.

(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)