Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Textbook Question
Chapter 20, Problem 8MCQ
Cell membrane damage causes death because
- a. the cell undergoes osmotic lysis.
- b. cell contents leak out.
- c. the cell plasmolyzes.
- d. the cell lacks a wall.
- e. none of the above
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A selectively permeable
A. allows some substance to move across the membrane, but not others
B. allows unlimited movement of materials into or out of the cell
C. allows substances to enter, but prevent any substances from leaving the cell
D. allows only helpful materials to cross the the cell membrane into the cell
Cilia and fl agella are involved ina. forming junctions between cells.b. establishing the extracellular matrix.c. cell-to-cell communication.d. cell movement.
A cellular process is shown in stages from left to right in the image. Which of
the following is the depicted process, with the correct description of its
function?
Outiside of cell
Plasma
Membrane
-00
0--00
8-88-8
8-88-8
A. Endocytosis; initiation of signal transduction
B. Endocytosis; uptake of nutrients
C. Exocytosis; breakdown of wastes
D. Exocytosis; secretion of proteins
Chapter 20 Solutions
Microbiology: An Introduction
Ch. 20 - DRAW IT Show where the following antibiotics work:...Ch. 20 - List and explain five criteria used to identify an...Ch. 20 - What similar problems are encountered with...Ch. 20 - Define drug resistance. How is it produced? What...Ch. 20 - List the advantages of using two chemotherapeutic...Ch. 20 - Why does a cell die from the following...Ch. 20 - How does each of the following inhibit...Ch. 20 - The OH is missing from carbon 39 in ddI. How does...Ch. 20 - Compare the method of action of the following...Ch. 20 - NAME IT This microorganism is not susceptible to...
Ch. 20 - Which of the following pairs is mismatched? a....Ch. 20 - Prob. 2MCQCh. 20 - Prob. 3MCQCh. 20 - An antimicrobial agent should meet all of the...Ch. 20 - The most selective antimicrobial activity would be...Ch. 20 - Prob. 6MCQCh. 20 - Which of the following will not affect eukaryotic...Ch. 20 - Cell membrane damage causes death because a. the...Ch. 20 - A drug that intercalates into DNA has the...Ch. 20 - Chloramphenicol binds to the 50S portion of a...Ch. 20 - Prob. 1ACh. 20 - Why is idoxuridine effective if host cells also...Ch. 20 - Some bacteria become resistant to tetracycline...Ch. 20 - The following data were obtained from a...Ch. 20 - Prob. 5ACh. 20 - The following results were obtained from a broth...Ch. 20 - Vancomycin-resistant Enterococcus faecalis was...Ch. 20 - Prob. 2CAECh. 20 - Prob. 3CAE
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- A type of cell connection whose only function is to prevent the cellsfrom coming apart is aa. desmosome. b. gap junction. c. tight junction.arrow_forwardMark the following statements about the cytoskeleton as true or false. If a statement is false, correct it to make a true statement.a. _____ Actin filaments combine with myosin motor proteins to provide the cell with mechanical strength.b. _____ The cilia found on sperm cells propel the cells through a liquid medium.c. _____ Microtubules are hollow tubes that align organelles and shuttle them to their proper places in the cell.d. _____ Intermediate filaments are ropelike structures composed of tubulin proteins.e. _____ Centrioles are part of the centrosome from which microtubules originate.f. _____ Endocytosis, exocytosis, muscle cell contraction, and cellular “crawling” are all mediated by intermediate filamentsarrow_forwardWhich of the following junctions allows for cytoplasm-to-cytoplasmcommunication between cells?a. adhesion junctions c. gap junctionsb. tight junctions d. None of these are correct.arrow_forward
- Plasma membranes are selectively permeable. This means: A. cholesterol cannot enter B. anything can pass in and out C.the membrane regulates the passage of the material in and out of the cell D. glucose cannot enter the cellarrow_forwardFunctions of cell junctions I. helps cells have a point of communication or interaction with each other II. prevents diffusion of molecules from one area of the membrane to another III. anchors the plasma membrane with other organelles for streaming in the cytosol IV. connects cells to basal surfaces for anchor II, III, Iv only I, II, III, IV I, II, IV only I, II, III onlyarrow_forwardThe tigroid lysis is observed in a case of functional exhaustion of the neuron. It is resulted in decay of basophilic substance and brightening of the neuroplasma. What organelles changes do this phenomenon is associated with? a. Granular endoplasmic reticulum O b. Lysosomes O c. Neurofibrils d. Golgi apparatus O e. Mitochondriaarrow_forward
- 1. Label the parts/organelles in the cell below. a. thru I. a. b. C. d. g. k. 2. Give one function of each part/organelle. а. b. C. d. е. f. g. h. i. j. k. I.arrow_forwardWhich of the following can enter the cell by diffusion through the plasma membrane? A. salts B. glucose C. phospholipids D. carbon dioxidearrow_forwardSuppose you are to describe structure 3, which of the following best describes it? Figure 4. Cell Modification (Source: https://www.slideshare.net/lesson-4-cell-madifications A. It is known as communicating junctions that sends signal to other cells. B. It allows direct exchange of chemicals between the cytoplasm of two cells. C. It acts as barriers that regulate the movement of water and solutes between epithelial layers. D. It is an anchoring junction on the lateral surface of the cell which fastens cells to another basement membrane. 2. 3.arrow_forward
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