Complete Test Bank, All Chapters are included
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, Applied Pathophysiology A Conceptual Approach to
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theMechanisms of Disease 4th Edition Braun Test Bank
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Chapter 1Introduction to Pathophysiology
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1. The nucleus n , which is essential for function and survival of the cell.
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A) is the site of protein synthesis
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B) contains the genetic code n n n
C) transforms cellular energy n n
D) initiates aerobic metabolism n n
2. Although energy is not made in mitochondria, they are known as the
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powerplants of the cell because they:
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A) contain RNA for protein synthesis.
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B) utilize glycolysis for oxidative energy.
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C) extract energy from organic compounds.
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D) store calcium bonds for muscle contractions.
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3. Although the basic structure of the cell plasma membrane is formed by a
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lipidbilayer, most of the specific membrane functions are carried out by:
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A) bound and transmembrane proteins.
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B) complex, long carbohydrate chains. n n n
C) surface antigens and hormone receptors.
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D) a gating system of selective ion channels.
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4. To effectively relay signals, cell-to-cell communication utilizes
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chemicalmessenger systems that:
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A) displace surface receptor proteins. n n n
B) accumulate within cell gap junctions. n n n n
C) bind to contractile microfilaments.
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D) release secretions into extracellular fluid.
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5. Aerobic metabolism, also known as oxidative metabolism, provides energy by:
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,A) removing the phosphate bonds from ATP. n n n n n
B) combining hydrogen and oxygen to form water. n n n n n n
C) activating pyruvate stored in the cytoplasm.
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D) breaking down glucose to form lactic acid.
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6. Exocytosis, the reverse of endocytosis, is important in
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theextracellular fluid.
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A) Engulfing and ingesting fluid and proteins for transport
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B) Killing, degrading, and dissolving harmful microorganisms
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C) Removing cellular debris and releasing synthesized substances
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D) Destruction of particles by lysosomal enzymes for secretion
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7. The process responsible for generating and conducting membrane potentials is:
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A) diffusion of current-carrying ions.
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B) millivoltage of electrical potential. n n n
C) polarization of charged particles. n n n
D) ion channel neurotransmission.
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8. Epithelial tissues are classified according to the shape of the cells and the
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number of layers. Which of the following is a correctly matched
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descriptionand type of epithelial tissue?
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A) Simple epithelium: cells in contact with intercellular matrix; some do
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notextend to surface
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B) Stratified epithelium: single layer of cells; all cells rest on
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basementmembrane
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C) Glandular epithelium: arise from surface epithelia and
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underlyingconnective tissue
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D) Pseudostratified epithelium: multiple layers of cells; deepest layer rests n n n n n n n n
onbasement membrane
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9. Connective tissue contains fibroblasts that are responsible for:
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A) providing a fibrous framework for capillaries.
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B) synthesis of collagen, elastin, and reticular fibers.
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, C) forming tendons and the fascia that covers muscles.
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D) filling spaces between tissues to keep organs in place.
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10. Although all muscle tissue cells have some similarities, smooth muscle
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(alsoknown as involuntary muscle) differs by:
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A) having dense bodies attached to actin filaments.
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B) containing sarcomeres between Z lines and M bands.
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C) having rapid contractions and abundant cross-striations.
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D) contracting in response to increased intracellular calcium.
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11. Which of the following aspects of the function of the nucleus is performed
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byribosomal RNA (rRNA)?
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A) Copying and carrying DNA instructions for protein synthesis
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B) Carrying amino acids to the site of protein synthesis
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C) Providing the site where protein synthesis occurs
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D) Regulating and controlling protein synthesis n n n n
12. Breakdown and removal of foreign substances and worn-out cell parts
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areperformed by which of the following organelles?
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A) Lysosomes
B) Golgi apparatus n
C) Ribosomes
D) Endoplasmic reticulum (ER) n n
13. Impairment in the function of peroxisomes would result in:
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A) inadequate sites for protein synthesis. n n n n
B) an inability to transport cellular products across the cell membrane.
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C) insufficient energy production within a cell. n n n n n
D) accumulation of free radicals in the cytoplasm. n n n n n n
14. After several months of trying to conceive, a couple is undergoing fertility
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testing. Semen analysis indicates that the mans sperm have decreased motility,a
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finding that is thought to underlie the couples inability to become pregnant.
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