What is Life? A Guide to Biology 3e & LaunchPad for Phelan's What is Life? (Six Month Access) 3e
3rd Edition
ISBN: 9781319028503
Author: Jay Phelan
Publisher: W.H. Freeman & Co
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Chapter 13, Problem 10MC
Summary Introduction
Introduction:
Archaea are a separate group of organisms that cannot be grouped with prokaryotic bacteria and the eukarya. This is due to their striking features.
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) Most human bacterial pathogens are labeled as __ according to their temperature requirement: a) Aerophiles b) Aerobes c) Anaerobes d) Psychrophiles e) Mesophiles
13) What is the purpose of a bacterium's cell wall?
A) It provides direct protection from antibiotics.
B) It prevents sunlight from destroying the cell's DNA.
C) It prevents water from diffusing into the cell.
D) Bacteria do not have a cell wall.
73) The type of bacteria that lacks peptidoglycan in its cell wall is: a) Cyanobacteria b) Eubacteria c) Archaebacteria d) Bacteriophage e) Halophiles 74) All the followings belong to the same method of controlling bacteria except: a) Radiation b) Gases c) Dry Heat d) Filtration e) Low temperatures 75) The reason bacteria uses siderophore is because of the: a) Low solubility of iron oxide in water b) The molecule is a good iron chelator c) Low solubility of Ferrous in water d) Low solubility of Ferric in water e) c & d
Chapter 13 Solutions
What is Life? A Guide to Biology 3e & LaunchPad for Phelan's What is Life? (Six Month Access) 3e
Ch. 13 - Prob. 1SACh. 13 - Prob. 2SACh. 13 - Prob. 3SACh. 13 - Prob. 4SACh. 13 - Prob. 5SACh. 13 - Prob. 6SACh. 13 - Prob. 7SACh. 13 - Prob. 8SACh. 13 - Prob. 9SACh. 13 - Prob. 10SA
Ch. 13 - Prob. 11SACh. 13 - Prob. 12SACh. 13 - Prob. 13SACh. 13 - Prob. 14SACh. 13 - Prob. 15SACh. 13 - Prob. 16SACh. 13 - Prob. 17SACh. 13 - Prob. 18SACh. 13 - Prob. 1MCCh. 13 - Prob. 2MCCh. 13 - Prob. 3MCCh. 13 - Prob. 4MCCh. 13 - Prob. 5MCCh. 13 - Prob. 6MCCh. 13 - Prob. 7MCCh. 13 - Prob. 8MCCh. 13 - Prob. 9MCCh. 13 - Prob. 10MCCh. 13 - Prob. 11MCCh. 13 - Prob. 12MCCh. 13 - Prob. 13MCCh. 13 - Prob. 14MCCh. 13 - Prob. 15MCCh. 13 - Prob. 16MCCh. 13 - Prob. 17MCCh. 13 - Prob. 18MC
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- 29) The doubling time in the bacterial growth cycle is measured during: a) Prodromal period b) Log phase c) Incubation period d) Convalescence period e) none of the above 34.Singlet oxygen that can kill bacteria is produced by: a) Catalase b) Superoxide Dismutase c) Sunlight radiation d) Gamma radiation e) c & d 35) Bacteria that can grow in your refrigerator but really loves your freezer is labelled as: a) Hypothermophile b) Psychrophile c) Psycrotroph d) Thermophobe e) Archaebacteriaarrow_forward22) 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 lowarrow_forwardWhat are the answers to these questions?arrow_forward
- A range of antibiotics is produced by bacteria related to: (choose only one) a) Bacillus b) Mycoplasma c) Streptomyces d) spirochaetes e) cyanobacteriaarrow_forwardEndotoxin is associated witha) Gram-positive bacteria.b) Gram-negative bacteria.c) the cytoplasmic membrane.d) endospores.arrow_forwardEndotoxins are A) O Associated with lipid A of the LPS layer. B) ) O Secreted from the cell. C) O Part of the thick peptidoglycan layer of gram-positive bacteria. D) O Associated with gram-negative bacter1a E) O Two of the above are correctarrow_forward
- 1) A newly discovered unicellular organism isolated from acidic mine drainage is found to contain a cell wall, a plasma membrane, two flagella, and peroxisomes. Based just on this information, the organism is most likely, A) a nonmotile prokaryote B) a motile bacterium C) a motile archaea D) a nonmotile eukaryote E) a motile eukaryotearrow_forwardThe peptidoglycan region in archaea is connected to each other by a: a) tetrapeptide b) Teichoic Acid c) Lipoteichoic acid d) all of the above e) none of the abovearrow_forwardThe fatty acids in Archaea differ than those in bacteria in that they are: a) polar in archaea b) hydrophilic in Bacteria c) saturated in Bacteria d) unsaturated in archaea e) branched in Archaeaarrow_forward
- Adherence to the intestinal lining by a bacterium may be due to its possession of _____. A) endospores B) pili C) a flagellum D) F+ plasmidarrow_forwardStrict anaerobes cannot live in the presnece of oxgyen because: a.)they have to mitochondria b.) they cannot absord nutrients from the envioment c.)they cannot make macromolcules d.) they lack detoxifing enzymes e.) they cannot make ATP oragnisms need phosphorous to incoroprate it in their: a.) cell membrane b.) DNA and RNA c.) ATP d.) a and c e.) a, b, and carrow_forwardYou perform a Gram staining technique on two bacterial species and observe that one is stained purple while the other is stained pink. Which of the following is consistent with this observation? a) The purple one is likely more resistant to penicillin b) Both bacteria have a cell wall made of mycolic acid c) Their peptidoglycan layers have the same thickness d) They differ in the number of phospholipid membranes e) One has a monolayer of phospholipids while the other has a bilayer of phospholipidsarrow_forward
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