Chapter 1, The Cell in Health and Illness
Multiple Choice
Identify the choice that best completes the statement or answers the question.
1. Which statement regarding the sodium–potassium pump is correct?
1. The cell’s plasma membrane is more soluble to sodium ions than potassium ions.
2. The concentration of sodium ions should be higher inside the cell compartment.
3. The concentration of potassium ions should be higher outside the cell
compartment.
4. The active transport involves pumping out three sodium ions and pumping in two
potassium ions.
2. In the absence of oxygen, which cellular function creates the same amount of energy as is created in
the presence of oxygen?
1. Dissipation of pyruvic acid
2. Initiation of the citric acid cycle
3. Activation of acetyl-coenzyme A
4. Creation of acidosis via lactic acid
3. How many adenosine triphosphates (ATPs) are produced in aerobic energy metabolism?
1. 2
2. 3
3. 34
4. 53
4. Which cell organelles differ in their number according to the cell’s energy needs?
1. Ribosomes
2. Mitochondria
3. Ribonucleic acids
4. Deoxyribonucleic acids
5. Which option best supports the reason more energy is produced when a person is exercising?
1. Exercise causes an increase in the synthesis of protein.
2. There is an increase in the production of pyruvic acid in the cells.
3. The conversion of pyruvic acid to lactic acid is increased by exercise.
4. Muscle cells have more mitochondria to meet energy demands.
6. When does ribosomal protein synthesis cease?
1. During endoplasmic reticulum stress
2. During the synthesis of adenosine triphosphate (ATP)
3. During a severe hypoxic state
4. During the processing of prohormone
7. Which cellular organelles are responsible for propelling mucus and inhaled debris out of the lungs?
1. Cilia
2. Microfilaments
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