Porth’s Essentials of Pathophysiology 5th Edition Test Bank

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Chapter 01 - Cell Structure and Function 1. The nucleus _________, which is essential for function and survival of the cell. A) is the site of protein synthesis B) contains the genetic code C) tra... nsforms cellular energy D) initiates aerobic metabolism 2. Although energy is not made in mitochondria, they are known as the power plants of the cell because they: A) contain RNA for protein synthesis. B) utilize glycolysis for oxidative energy. C) extract energy from organic compounds. D) store calcium bonds for muscle contractions. 3. Although the basic structure of the cell plasma membrane is formed by a lipid bilayer, most of the specific membrane functions are carried out by: A) bound and transmembrane proteins. B) complex, long carbohydrate chains. C) surface antigens and hormone receptors. D) a gating system of selective ion channels. 4. To effectively relay signals, cell-to-cell communication utilizes chemical messenger systems that: A) displace surface receptor proteins. B) accumulate within cell gap junctions. C) bind to contractile microfilaments. Test Bank - Essentials of Pathophysiology (4th Edition by Porth) 2 D) release secretions into extracellular fluid. 5. Aerobic metabolism, also known as oxidative metabolism, provides energy by: A) removing the phosphate bonds from ATP. B) combining hydrogen and oxygen to form water. C) activating pyruvate stored in the cytoplasm. D) breaking down glucose to form lactic acid. 6. Exocytosis, the reverse of endocytosis, is important in _______ into the extracellular fluid. A) Engulfing and ingesting fluid and proteins for transport B) Killing, degrading, and dissolving harmful microorganisms C) Removing cellular debris and releasing synthesized substances D) Destruction of particles by lysosomal enzymes for secretion 7. The process responsible for generating and conducting membrane potentials is: A) diffusion of current-carrying ions. B) millivoltage of electrical potential. C) polarization of charged particles. D) ion channel neurotransmission. 8. Epithelial tissues are classified according to the shape of the cells and the number of layers. Which of the following is a correctly matched description and type of epithelial tissue? A) Simple epithelium: cells in contact with intercellular matrix; some do not extend to surface B) Stratified epithelium: single layer of cells; all cells rest on basement membrane C) Glandular epithelium: arise from surface epithelia and underlying connective tissue D) Pseudostratified epithelium: multiple layers of cells; deepest layer rests on basement membrane Test Bank - Essentials of Pathophysiology (4th Edition by Porth) 3 9. Connective tissue contains fibroblasts that are responsible for: A) providing a fibrous framework for capillaries. B) synthesis of collagen, elastin, and reticular fi..................................................CONTINUED [Show More]

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