NESTER'S MICROBIOLOGY
9th Edition
ISBN: 9781264826940
Author: Anderson
Publisher: MCG
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Textbook Question
Chapter 4, Problem 3MC
Cells are most sensitive to penicillin during which phase of the growth curve?
a) Lag
b) Exponential
c) Stationary
d) Death
e) More than one of these
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Which one of the following categories for antibacterial agents is most likely to have
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b) inhibitors of cell wall synthesis
Oc) inhibitors of protein synthesis
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e) inhibitors of DNA synthesis
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A glycocalyx functions in all of the folowing ways EXCEPT:
a) adherence to non-living surfaces, such as rocks
Ob) motility
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Chapter 4 Solutions
NESTER'S MICROBIOLOGY
Ch. 4 - Describe a detrimental and a beneficial effect of...Ch. 4 - Define a pure culture.Ch. 4 - Prob. 3SACh. 4 - Explain how the environment of a colony differs...Ch. 4 - Prob. 5SACh. 4 - Why would botulism be a concern with canned foods?Ch. 4 - Explain why O2-containing atmospheres kill some...Ch. 4 - Explain why photoautotrophs are primary producers.Ch. 4 - Distinguish between a selective medium and a...Ch. 4 - Prob. 10SA
Ch. 4 - Prob. 1MCCh. 4 - Compared with their growth in the laboratory,...Ch. 4 -
3. Cells are most sensitive to penicillin during...Ch. 4 - Which best describes the intestinal tract? a) An...Ch. 4 - E. coli, a facultative anaerobe, is grown for 24...Ch. 4 - The generation time of a bacterium was measured at...Ch. 4 - Which of the following is false? a)E. coli grows...Ch. 4 -
8. If the pH indicator were left out of MacConkey...Ch. 4 -
9. A soil sample is placed in liquid and the...Ch. 4 -
10. If the concentration of E. coli in a broth is...Ch. 4 -
1. You are a microbiologist working for a...Ch. 4 - High-performance boat manufacturers know that...Ch. 4 - This figure shows a growth curve plotted on a...Ch. 4 - Prob. 2CT
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- Which antimicrobial drug does not inhibit cell wall synthesis? a) gentamicin b) vancomycin c) cephalosporins d) penicillinsarrow_forward20) Biological control of Salmonella is by using: a) E. Coli (ETEC Strain) b) Shigella c) Bdellovibrio d) Plasmodium e) Spirillum 23) Salmonella typhi and Staphylococcus aureus are two species used in: a) Toxin-mediated killing b) Viral mediated lysis c) Predation-mediated killing d) Autoclave effectiveness evaluation e) Phenol Coefficient test 25) The gas that has been used recently used to decontaminate biological safety cabinets is: a) EtO b) Beta-propiolactone c) NO Gas d) N2O Gas e) Vapor-phase H2O2arrow_forwardGrisofulvin is an antifungal agent that affects: select the correct answer. a) the chitin cell wall structure b) ergosterol in the cell membrane c) the formation of the mitotic spindle in mitosis d) the 50s ribosomal subunit and thus protein synthesis e) mRNA synthesisarrow_forward
- Mycobacterium tuberculosis is very difficult to stain because of the A) presence of ribosomes in the cytoplasm. B) location of the DNA within the cell. C) large amounts of a waxlike lipids present in its cell wall. D) lack of a cell wall.arrow_forwardWhich cells are or have been made totipotent? Select all that apply A) a zygote B) sperm cells C) plant cells in the right experimental medium D) human skins cells in the right experimental mediumarrow_forwardMatch the PAMP to the type of pathogen it is specific to. 1) Peptidoglycan 2) Lipopolysaccharides 3) RNA 4) DNA Here is the options: a) Gram-negative bacteria b) Viruses c) Gram-positive bacteriaarrow_forward
- 1) Which of the following apply(ies) to Bacillus cereus and Bacillus anthracis? Choose all that apply: a) B. anthracis forms spores while B. cereus does not b) B. cereus is more lethal when it causes an infection c) B. anthracis has extra-chromosomal DNA that makes it more pathogenic d) Despite their similar names, the two are actually not at all related e) The 16S rRNA gene sequences of these bacteria are more than 99% identical, meaning that they are actually members of the same speciesarrow_forwardRefer to the figures above: 41) Which figure displays the rate of bacterial growth in a living animal? a) Figure A b) Figure C C) Both d) Neither e) Cannot be determined 42) Which figure tests the effects of one or more lymphocytes? a) Figure A b) Figure C c) Both d) Neither e) Cannot be determined 43) Which figure demonstrates that addition of effector PCs leads to bacterial death? a) Figure A b) Figure C C) Both d) Neither e) Cannot be determined 44) Based on these figures, Listeria infection control is most directly due to which effector cell: a) CTL b) T helper c) Macrophage d) Basophil d) None of the abovearrow_forwardWhich one(s) is/are more harmful to the host and why? A) Antifungal agents B) antiprotozoal agents C) antibiotics A and Barrow_forward
- Which of the following is a consideration in treating bacterial infections A) Bacteriostatic b) bactericidal c) broad spectrumarrow_forwardWhich antibiotic affects cell wall synthesis?a)streptomycin b) erythromycin c) tetracycline d)penicillinarrow_forwardWhich of the following cells predominate at the sites of chronic bacterial infections? a) Macrophages b) B cells c) Basophils d) Mast cellsarrow_forward
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