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Multiple Choice
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Identify the choice that best completes the statement or answers the question.
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1. Which statement regarding the sodium–potassium pump is correct?
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1. The cell’s plasma membrane is more soluble to sodium ions than potassium ions.
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2. The concentration of sodium ions should be higher inside the cell compartment.
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3. The concentration of potassium ions should be higher outside the cell
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compartment.
b
4. The active transport involves pumping out three sodium ions and pumping in two
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potassium ions. b
2. In the absence of oxygen, which cellular function creates the same amount of energy as is created in
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the presence of oxygen?
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1. Dissipation of pyruvic acid b b b
2. Initiation of the citric acid cycle b b b b b
3. Activation of acetyl-coenzyme A b b b
4. Creation of acidosis via lactic acid b b b b b
3. How many adenosine triphosphates (ATPs) are produced in aerobic energy metabolism?
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1. 2 b b
2. 3 b b
3. 34 b b
4. 53 b b
4. Which cell organelles differ in their number according to the cell’s energy needs?
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1. Ribosomes
2. Mitochondria
3. Ribonucleic acids b
4. Deoxyribonucleic acids b
5. Which option best supports the reason more energy is produced when a person is exercising?
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1. Exercise causes an increase in the synthesis of protein. b b b b b b b b
2. There is an increase in the production of pyruvic acid in the cells.
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3. The conversion of pyruvic acid to lactic acid is increased by exercise.
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4. Muscle cells have more mitochondria to meet energy demands.
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6. When does ribosomal protein synthesis cease?
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1. During endoplasmic reticulum stress b b b
2. During the synthesis of adenosine triphosphate (ATP)
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3. During a severe hypoxic state b b b b
4. During the processing of prohormone b b b b
7. Which cellular organelles are responsible for propelling mucus and inhaled debris out of the lungs?
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1. Cilia
2. Microfilaments
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, 3. Secretory vesicles b
4. Endoplasmic reticula b
8. b bWhich are the key proteins in the contractile units of the muscle cells?
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1. Actin and myosin b b
2. Prohormone and tubulin b b
3. Tubulin and actin b b
4. Myosin and prohormone b b
9. Which deficiency causes Tay–Sachs disease?
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1. Proteasome
2. Peroxisome
3. Macrophage
4. Lysosomal enzymes b
b 10. Which is a characteristic of adrenoleukodystrophy?
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1. Accumulation of ganglioside b b
2. Cessation of ribosomal protein synthesis b b b b
3. Acceleration of cellular proteasome activity b b b b
4. Accumulation of long-chain fatty acids in the nervous system b b b b b b b b
b 11. Which statement regarding endoplasmic reticulum (ER) stress is correct?
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1. During ER stress, proteins are rapidly degraded.
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2. During ER stress, lipids cannot travel to their proper intracellular locations.
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3. During ER stress, long-chain fatty acids accumulate in the nervous system.
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4. During ER stress, nondegraded substances accumulate in the cells.
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b 12. A client is diagnosed with type 1 diabetes mellitus. At a cellular level, which function is likely to
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b be involved?
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1. Inability of ribosomes to produce a specific type of protein
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2. Incorrect processing of a protein by the Golgi apparatus
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3. Stagnation of a previously dynamic action in microtubules
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4. Obstruction of the smooth endoplasmic reticulum b b b b b
b 13. A newborn patient exhibits characteristics of severe physical deformities. Which cellular
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bcomponent is examined to determine the cause and probability of the disease being genetically
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btransferred?
1. Transfer RNA b
2. Ribosomal RNA b
3. Double helix of DNA b b b
4. Mitochondrial DNA b
b 14. A hiker experiences muscle pain and acidosis while ascending a mountain during a long,
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b steep climb. Which is the reason for these manifestations?
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1. Cellular hypoxia b
2. Autolysis
3. Heterolysis
4. Cellular edema b
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, b 15. b Which factor provides DNA the unique molecular ability to replicate?
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1. The pairing of nitrogenous bases
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2. The presence of pyrimidine bases
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3. The presence of nucleotides
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4. The nitrogenous base and phosphate bond
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b 16. b How many nitrogenous bases compose a single codon?
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1. 2 b b
2. 3 b b
3. 4 b b
4. 5 b b
b 17. b Which components form the structure of DNA?
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1. Nucleotides
2. Amino acids b
3. Fatty acids b
4. Phosphates
b 18. b b Which factor is essential in order for protein synthesis to occur?
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1. Free-standing ribosomes within the cell b b b b
2. Protein blueprint from the cell of the DNA
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3. Specific information from the nucleus of the cell
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4. Transfer RNA to move the protein out of the cell
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b 19. Tetracycline antibiotic is prescribed for an adult client with chlamydia infection. Which is
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b the mechanism of action of the drug?
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1. It prevents the replication of bacteria.
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2. It alters the configuration of bacterial cytoplasm.
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3. It interferes with the function of bacterial ribosomes.
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4. It inhibits the functions of bacterial mitochondria.
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b 20. b b Where does the conversion of a prohormone into a hormone take place?
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1. In the ribosomes
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2. In the Golgi apparatus
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3. In the secretory granules
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4. In the endoplasmic reticulum
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b 21. Which is the cell’s “master mind”?
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1. Nucleus
2. Ribosome
3. Golgi apparatus b
4. Endoplasmic reticulum b
Multiple Response
b
Identify one or more choices that best complete the statement or answer the question.
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b 22. b b Which statements regarding the microtubules are true? Select all that apply.
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