Huether Mccance Pathophysiology Exam A+ Grade Assured Complete Solutions And Verified Answers

PATHOPHYSIOLOGY EXAM vc




Exam Solution vc




McCance Pathophysiology chapter 1 sample questions 2 vc vc vc vc vc vc




026 A+ GRADE ASSURED COMPLETE SOLUTIONS AND V
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ERIFIED ANSWERS (471DE) vc vc




QUESTION 1 vc




Chapter 1: Cellular Biology MULTIPLE CHOICE 1. Which statement best describes the cell
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ular function of metabolic absorption?
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a. Cells can produce proteins.
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b. Cells can secrete digestive enzymes.
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c. Cells can take in and use nutrients.
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d. Cells can synthesize fats.
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ANSWER

ANS: C In metabolic absorption, all cells take in and use nutrients and other substances from their surro
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undings. The remaining options are not inclusive in their descriptions of cellular metabolic absorption. P
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TS: 1 REF: Page 2
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QUESTION 2 vc




2. Most of a cell's genetic information, including RNA and DNA, is contained in the:
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a. Mitochondria
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b. Ribosome
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c. Nucleolus
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d. Lysosomevc




ANSWER

ANS: C The nucleus contains the nucleolus, a small dense structure composed largely of RNA, most of th
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e cellular DNA, and the DNA-
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binding proteins, such as the histones, which regulate its activity. The other options do not contain most
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of a cell's genetic information. PTS: 1 REF: Page 2
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QUESTION 3 vc

, 3. Which component of the cell produces hydrogen peroxide (H2O2) by using oxygen to r
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emove hydrogen atoms from specific substrates in an oxidative reaction?
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a. Lysosomes
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b. Peroxisomes
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c. Ribosomes
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d. Oxyhydrosomes
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ANSWER

ANS: B Peroxisomes are so named because they usually contain enzymes that use oxygen to remove hyd
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rogen atoms from specific substrates in an oxidative reaction that produces H2O2, which is a powerful o
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xidant and potentially destructive if it accumulates or escapes from peroxisomes. Ribosomes are RNA-
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protein complexes (nucleoproteins) that are synthesized in the nucleolus and secreted into the cytoplas
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m through pores in the nuclear envelope called nuclear pore complexes. Lysosomes are saclike structur
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es that originate from the Golgi complex and contain more than 40 digestive enzymes called hydrolases,
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which catalyze bonds in proteins, lipids, nucleic acids, and carbohydrates. Oxyhydrosomes are involved
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in enzyme production. PTS: 1 REF: Page 8
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QUESTION 4 vc




4. Which cell component is capable of cellular autodigestion when it is released during c
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ell injury?vc



a. Ribosome
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b. Golgi complex
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c. Smooth endoplasmic reticulum
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d. Lysosomes
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ANSWER

ANS: D The lysosomal membrane acts as a protective shield between the powerful digestive enzymes wi
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thin the lysosome and the cytoplasm, preventing their leakage into the cytoplasmic matrix. Disruption of
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the membrane by various treatments or cellular injury leads to a release of the lysosomal enzymes, whi
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ch can then react with their specific substrates, causing cellular self-
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digestion. The other options do not correctly describe this process. PTS: 1 REF: Pages 7-8
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QUESTION 5 vc




7. What organic compound facilitates transportation across cell membranes by acting as
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receptors, transport channels for electrolytes, and enzymes to drive active pumps?
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a. Lipids
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b. Proteases
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c. Proteins
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d. Carbohydrates
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ANSWER

ANS: C Proteins act as (1) recognition and binding units (receptors) for substances moving in and out of
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the cell; (2) pores or transport channels for various electrically charged particles called ions or electroly
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tes and specific carriers for amino acids and monosaccharides; and (3) specific enzymes that drive activ
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