Preview

Pathophysiology Chp4

Powerful Essays
Open Document
Open Document
1904 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Pathophysiology Chp4
Gould: Pathophysiology for the Health Professions, 4th Edition
Chapter 04: Infection Test Bank-MULTIPLE CHOICE

1. Bacteria that form a cluster of spheres are called: a. | Bacilli | b. | Diplococcic | c. | Staphylococci | d. | Streptococci |

2. An anaerobe requires which specific environment? a. | a dry environment | b. | an acidic medium | c. | air at temperature less than 61° F/16° C | d. | the absence of oxygen |

3. The presence of the bacterial capsule: a. | promotes attachment of the bacteria to tissue | b. | protects the microbe from phagocytosis | c. | increases the release of toxins and enzymes | d. | prevents replication of the bacterium |

4. Microbial mutation means that: a. | genetic information and some microbial characteristics have changed | b. | pathogens become nonpathogens | c. | the microbe survives adverse conditions but can no longer replicate | d. | the immune response to that microbe is strengthened |

5. A bacterial endospore can: a. | also be classified as an acid-fast bacterium | b. | exist in latent form inside a host cell | c. | reproduce very rapidly | d. | survive high temperatures and dry environment |

6. The structure of a virus includes: a. | a cell wall and membrane | b. | metabolic enzymes for replication | c. | a protein coat and either DNA or RNA | d. | a slime capsule and cilia |

7. What method do viruses use to replicate? a. | binary fission | b. | budding of a daughter cell from the parent viral cell | c. | producing reproductive spores | d. | using a host cell to produce and assemble components |

8. A retrovirus such as HIV contains: a. | RNA and enzymes for its conversion | b. | a double strand of DNA | c. | many enzymes to limit budding of new virions | d. | numerous mitochondria |

9. How do antiviral drugs act? a. | interfering with cell wall development | b. | decreasing cell membrane permeability |

You May Also Find These Documents Helpful

  • Satisfactory Essays

    Physiology 1 Ch-4,5

    • 1708 Words
    • 7 Pages

    ___________ is a term which describes a membrane that allows only certain molecules to penetrate it.…

    • 1708 Words
    • 7 Pages
    Satisfactory Essays
  • Satisfactory Essays

    132 Final

    • 2630 Words
    • 11 Pages

    A cell infected by a virus will produce __________ that signal neighboring cells to increase production of proteins that interfere with viral replication.…

    • 2630 Words
    • 11 Pages
    Satisfactory Essays
  • Satisfactory Essays

    A 70-year-old male with chronic renal failure presents with edema. Which of the following is the most likely cause of this condition?…

    • 1248 Words
    • 11 Pages
    Satisfactory Essays
  • Powerful Essays

    Bio 102: Study Guide

    • 1681 Words
    • 7 Pages

    9) Which of the following statements about the domain Bacteria is true? 9) most diverse, widespread prokaryotes…

    • 1681 Words
    • 7 Pages
    Powerful Essays
  • Good Essays

    Whatv Ve

    • 1157 Words
    • 5 Pages

    21. Describe the genetic material of the bacteria. be sure to tell where it is found.…

    • 1157 Words
    • 5 Pages
    Good Essays
  • Good Essays

    Genes that code for a particular trait come in several forms or alleles. Genotype refers to the…

    • 612 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    Cytochrome P450

    • 1965 Words
    • 8 Pages

    Cytochrome P450s (CYPs) are monooxygenase proteins that catalyze the metabolism of exogenous and endogenous substrates. CYPs function as enzymes and are found in all kingdoms of life. The P in P450 refers to pigment and 450nm refers to the wavelength of CYPs in solution exposed to carbon monoxide (CO). CYPs belong to the superfamily of proteins containing a heme (iron) cofactor active site. The heme active site is tethered to the CYP protein via thiolate ligand derived from a cysteine residue.The cysteine and accompanying residues in the C-terminal are highly conserved and contain the PROSITE consensus sequence [FW] - [SGNH] - x - [GD] - {F} - [RKHPT] - {P} - C - [LIVMFAP] - [GAD] [2-8]. The heme is used to oxidize drugs by adding a hydroxyl group to these substances, often as a way to rid the body of potentially harmful toxins in order to make them more water-soluble. They do this by inserting one atom of molecular dioxygen into an organic substrate (RH) while the second oxygen atom is reduced to water (RH+02 + 2e- → ROH + H20). CYP catalysis substrate binding to the heme site requires a two-electron transfer with NADH-cytochrome P450 oxidoreductase (CPR) to the highly reactive iron-oxo intermediate which promotes oxidation and returns the P450 to a resting state. Most CYP’s can bypass CPR by using a peroxide shunt, where single oxygen donors form an iron-oxo intermediate [1].…

    • 1965 Words
    • 8 Pages
    Powerful Essays
  • Good Essays

    In the case study from Chapter 4 in Porth’s Essentials of Pathophysiology (2015), the nurse is asked to evaluate J’s plan to drop 45 pounds before her wedding day in just three months by only eating one salad per day and exercising at least once every day. In addition the nurse is asked to discuss the role of ATP in cell metabolism and describe the difference between anaerobic and aerobic metabolism. Responding to J’s comment, “I just want to get rid of all this fat on my body; I want to be skinny,” the nurse needs to understand the nature of adipose tissue and some functions of adipocytes.…

    • 169 Words
    • 1 Page
    Good Essays
  • Good Essays

    Asians with α-thalassemia may carry two deleted a genes on the same chromosome. Blacks with α-thalassemia may carry one deleted a gene on the same chromosome.…

    • 598 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    How CHD Affects The Body

    • 591 Words
    • 3 Pages

    Some inherited disorders such as Familial hypercholesterolaemia which is caused by faulty genes can result in you naturally having very high cholesterol levels which can increase the chances of you developing CHD.…

    • 591 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Pathophysiology

    • 958 Words
    • 4 Pages

    Sickle Cell Anemia is an inherited disease characterized by periods of relative health alternating with episodes of severe illness caused when sickle shaped [pic]red blood cells block small blood vessels. According to the encyclopedia here’s the pathophysiology of the disease; Sickle cell anemia is caused by a mutation in the B globin chain of hemoglobin, causing the amino acid glutamic acid to be replaced with the hydrophobic amino acid valine at the sixth position. The B globin gene is found on the short arm of chromosome 11. The association of two wild type A globin subunits with two mutant B globin subunits forms hemoglobin S. Under low oxygen conditions, the absence of a polar amino acid at position six of the b globin chain promotes the non covalent polymerization (aggregation) of hemoglobin, which distorts red blood cells into a sickle shape and decreases their elasticity. The loss of red blood cell elasticity is central to the pathophysiology of sickle cell disease. Normal red blood cells are quite elastic, which allows the cells to deform to pass through capillaries. In sickle cell disease, low oxygen tension promotes red blood cell sickling and repeated episodes of sickling damage the cell membrane and decreases the cell 's elasticity. These cells fail to return to normal shape when normal oxygen tension is restored. These rigid blood cells are unable to deform as they pass through narrow capillaries, leading to vessel occlusion and ischemia (a restriction in blood supply). Sickle cell anemia is a genetic disorder that causes the victim 's red blood cells to become stiff and sickle shaped. The disease causes a variety of symptoms, the most prominent of which are crises, caused when the deformed cells block small capillaries, preventing the flow of oxygen to limbs and organs. This blockage is called sludging. The crises range from mild bone aches to devastating body pain and can last up to a week. In the most…

    • 958 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Outline on Viruses

    • 596 Words
    • 3 Pages

    A. Is a Virus Alive? 1. Viruses are segments of nucleic acids contained in a protein coat. 2. Pathogens are agents that cause disease. 3. Viruses do not grow, do not have homeostasis, and do not metabolize, therefore scientists don’t consider them to be living. 4. Discovery of Viruses i. Scientists filtered bacteria from the sap of infected plants, and were surprised to find that the filtered sap could still cause uninfected plants to become infected. ii. In 1935, Wendell Stanley of the Rockefeller Institute purified tobacco mosaic virus. The crystallized the purified virus, and concluded that TMV is a chemical rather than an organism. B. Viral Structure 1. The virus protein coat, or capsid, may contain either RNA or DNA, but not both. 2. Many viruses, such as the influenza virus, have a membrane, or envelope, surrounding the capsid. 3. The envelope consists of proteins, lipids, and glycoproteins, which are proteins with attached carbohydrate molecules. 4. Viruses exist in a variety of shapes, from rods, spheres, polyhedral figures, etc. 5. Viruses that infect bacteria are called bacteriophages. C. Viral Reproduction 1. Lytic Cycle i. In bacterial viruses, the cycle of viral infection, replication, and cell destruction is called the lytic cycle. 2. Lysogenic Cycle i. In the lysogenic cycle, the viral genome replicates without destroying the host cell. ii. During an infection, some viruses stay inside the cells but do not make new viruses. Instead of producing virus particles, the viral gene is inserted into the host chromosomes and is called a provirus. 3. Host Cell Specificity i. Viruses are often restricted to certain kinds of cells. For example, TMV can infect tobacco and related plants, but not animals. Scientists hypothesize this specificity may be due to the viruses’ origin. 4. Structure of HIV-an Enveloped Virus i. Many viruses that infect only animals, such as influenza, have an exterior viral envelope. ii. In many cases, the viral envelope is composed of a…

    • 596 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Pathophysiology

    • 1159 Words
    • 8 Pages

    The Lord is good.he dat dwelleth in d secret place of the most high shall abide under the shadow.DOWNLOAD FREE 'ROBBINS PATHOLOGIC BASIS OF DISEASE '…

    • 1159 Words
    • 8 Pages
    Good Essays
  • Powerful Essays

    Chapter 3 The External Assessment Strategic Management: Concepts & Cases 13th Edition Fred David Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall Ch 3 -1 External Audit  Environmental Scanning  Industry Analysis…

    • 2076 Words
    • 27 Pages
    Powerful Essays
  • Good Essays

    A&P2 ENDOCRINOLOGY

    • 347 Words
    • 2 Pages

    from the α cells and ________________________ from the β cells. Which of these hormones raises…

    • 347 Words
    • 2 Pages
    Good Essays