Nester's Microbiology: A Human Perspective
9th Edition
ISBN: 9781259709999
Author: Denise G. Anderson Lecturer, Sarah Salm, Deborah Allen
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 4, Problem 4MC
Which best describes the intestinal tract?
a) An open system with a chemically defined medium
b) An open system with a complex medium
c) A closed system with a chemically defined medium
d) A closed system with a complex medium
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Students have asked these similar questions
1) The slowest method in reducing the number of bacteria in a culture or the environment is: a) Sterilization b) Disinfection c) Antisepsis d) Sanitization e) Autolysis2) The molecule that helps insert the peptidoglycan monomers into the cell wall of the bacteria is: a) Ferredoxin b) Spherion c) Penicillin Binding Protein (PBP) d) Bactoprenol e) -Lactam Ring 3) A division in Eukaryotes that involves nuclear division without a cytokinesis will lead to the formation of: a) Baeocyte b) Mycellia c) Syncitium d) Myofibril e) all the above4) All the following are critical factors in determining the effectiveness of an antimicrobial agent except: a) Population size b) Species c) Location d) pH e) Temperature 5) The autoclave temperature must be raised up to _____ in order to effectively kill the bacterial spores: a) 121.1 oF b) 121.1 oC c) 121.1 oK d) 211 oF e) 112 oF
22) Which of the techniques/characteristics below may be used to identify a target
bacterium in a pool of microorganism?
a) its morphology
b) its growth requirement
c) antibody-antigen interaction
) d) all of the above.
) e) a and c
23) What is the process that produces alcohol in S. cerevisiae (yeast)?
() a) Respiration
( b) Sedimentation
c) Photosynthesis
)d) Fermentation
24) Identify the most mistaken (wrong) choice:
a) Halophiles are those organisms that like high salt concentrations.
) b) Some bacteria reproduce by binary fission.
( c) A fungus cell contains a true nucleus.
d) During the lag phase of growth, the metabolic activity is very low
USE NO. 1 PENCIL ONLY
IMPORTANT
Match the term below with the statement that best describes it:
A) Clamydia
B) Mycobacterium spp.
C) Escherichia coli
D) Firmicutes
E) Clostridium
G) Vibrio spp.
I) Spirochetes
K) Bacillus
F) MRSA
H) Rickettsiales
J) Mycoplasma
L) Cyanobacteria
Genus within the Actinobacteria that includes the causal agents of leprosy and
tuberculosis and is characterized by the presence of cell walls with mycolic acid.
A group of bacteria that undergo oxygenic photosynthesis
Genus of Tenericutes bacteria characterized by the absence of a cell wall
A member of the Gamma-proteobacteria characterized by short rods which are
commonly found in human gut microbiota
Genus of Gamma-proteobacteria characterized by curved rods and containing
both human pathogens and bioluminescent species
An order within the class Alpha-proteobacteria that are often intracellular
parasites such as the causative agent of Rocky Mountain spotted fever
A genus of rod shaped endospore producing…
Chapter 4 Solutions
Nester's Microbiology: A Human Perspective
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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- 17) The peptidoglycan layers are anchored to the cell membrane by: a) tetrapeptide chain b) dipeptide molecule c) teichoic acid d) lipoteichoic acid e) c & d18) The peptidoglycan region in Gram +Ve bacteria is strengthened with ___ cross bridges of: a) Lipopolysaccahride b) Archaeol c) Hopanoids d) Polypeptides e) FtsZ19) The fluid or region present between the inner membrane and the outer membrane of some bacteria is called: a) periplasm b) ectoplasm c) circumplasm d) lophoplasm e) amphiplasmarrow_forwardWhen hydrogen peroxide is placed on a colony of an unknown bacterium, bubbles form. Based on this information, you can conclude that the bacteriuma) is Staphylococcus epidermidis.b) is a lactic acid bacterium.c) is beta-hemolytic.d) is catalase-positive.e) can cause strep throat.arrow_forwardFermentation products produced by the skin-colonizing bacterium Staphylococcus epidermidis benefit humans in which of the following ways? A) Mucus is dissolved by these fermentation products B) Pathogens are destroyed by this bacterium through phagocytosis C) These products bind to receptors and interfere with viral infections D) They reduce the pH to values less hospitable to pathogens E) This acid consumes nutrientsarrow_forward
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