Homework Answers
Question
1. Bacteria such as E.coli and staph belong to the bacteria domain. Hence, option d is correct.
2. In general, prokaryotic cells are not having nucleus. Hence, option b is correct.
3. Serotype is the sub-species name and is indicated by the 4X56. Hence, option c is correct.
4. Eubacteria are known for ecologically importance. Hence, option c is correct.
5. Gram positivee cells are more susceptible to penicllin. Hence, option a is correct.
6. The bacteria is gram-negative Hence, option b is correct.
7. The solution having pH equal to 4.5 is acidic. Hence, option c is correct.
8. Glucose is monosacchrides. Hence, option a is correct.
9. The polarity of the molecules make its permeable. Hence, option a is correct.
10. Brightfield microscope are use to analyze bacteria. Hence, option d is correct.
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1. Bacteria such as E.coll and staph belong to which Domain? A. Animalia B. Eukarya C....
1) Without prokaryotes... a) much decomposition in the soil would stop b) PCR would be much...
1) Without prokaryotes... a) much decomposition in the soil would stop b) PCR would be much more difficult to do c) plants would have fewer nutrients to absorb d) there would be less methane in the world e) all of the above would occur 2) Which is least likely associated with prokaryotes? a) nitrogen fixation b) botulism c) methane production d) total global photosynthesis 3) Genetic variation in bacterial populations cannot result from: a) transduction b) transformation c) conjugation d)...
1) If you were given a microscope slide with a sample from a habitat rich in...
1) If you were given a microscope slide with a sample from a habitat rich in bacteria and nitrogen, you would expect to see.. a) peptidoglycan b) heterocysts c) filaments d) halophiles e) biofilms 2) A research ship catches a fish from the depths of the ocean. In the dark it glows. What are the prokaryotes doing in the fish? a) decomposing it b) providing bioluminescence c) fixing nitrogen d) photosynthesizing 3) Without prokaryotes... a) much decomposition in the soil...
1.) Mycoplasmas are bacteria that lack a peptidoglycan las There are 27 an layer or outer...
1.) Mycoplasmas are bacteria that lack a peptidoglycan las There are 27 an layer or outer membrane. Therefore, on the basis A) they would stain pink with gram stain. B) they would stain purple with gram stain C) they also lack a cell membrane. D) they would look just like animal cells. use light energy to generate chemical 2.) How would you classify a purple non-sulfur bacteria, which can u energy, but requires carbon from a source other than CO,...
Questions: 1. Define the term, pneumothorax. 2. Which bacteria typically respond to azithromycin? Highlight all that...
Questions: 1. Define the term, pneumothorax. 2. Which bacteria typically respond to azithromycin? Highlight all that apply. (see example a") d. Legionella spp. e. Rickettsia spp. f. Chlamydia spp. Which bacteria typically respond to cephalosporins like ceftriaxone? a. Gram negative b. Gram positive C. Mycoplasmas 3. a. Gram negative b. Gram positive c. Mycoplasmas d. Enterobacteriaceae Pneumocytis jiroveci infection is not a common infection. What conditions usually predispose patients to Pneumocytis jiroveci infection? 4. 5. Which dimorphic fungi can cause...
Which scientist / experiment provided the most compelling evidence to disproved Aristotle's theory of Spontaneous generation?...
Which scientist / experiment provided the most compelling evidence to disproved Aristotle's theory of Spontaneous generation? 1) Pasteur's swan neck experiment 2) Lazzaro's mutton broth experiment 3) Redi's flask and meat experiment 4) Pasteur's flask and meat experiment Antibiotic resistance genes may be transferred from one bacteria to another by conjugation via.... 1) the sex pilus 2) porins 3) chemotaxis 4) gas vacuoles Which of the following is not true of Gram-positive bacteria? 1) Posess an outer membrane composed of...
43.Lipopolysaccharides (LPS) are found in: a. Gram-positive bacteria b. Gram-negative bacteria c. all Bacteria d. Archaea...
43.Lipopolysaccharides (LPS) are found in: a. Gram-positive bacteria b. Gram-negative bacteria c. all Bacteria d. Archaea e. Eukaryotes ------------------------- 44. There are similarities and differences between Gram-negative and Gram-positive bacteria. Which of the following is not true? a. The cell wall of Gram-negative cells is composed of only one or two layers of peptidoglycan whereas the cell walls of Grampositive bacteria have many peptidoglycan layers b. Only Gram-positive bacterial cells have a periplasm 2/6/18 8 c. The cell membranes of...
1. Regarding the structure of bacteria cells: a) They always have a cell wall b) They...
1. Regarding the structure of bacteria cells: a) They always have a cell wall b) They are structurally the same as human cells c) They contain a distinct nucleus d) All of the above are correct 2. Cold sores and fever blisters are an example of a) A recurring bacterial infection b) A latent viral infection c) A nosocomial infection d) A fungal infection 3. Fungal infections: a) Are always a minor illness b) May present with pneumonia - like...
dyes, such as phenol red or methylene blue used in differential media? Why are dyes, such...
dyes, such as phenol red or methylene blue used in differential media? Why are dyes, such as A. to inhibit motility B. to stain microbes C to kill bacteria D. to see microbes to detect pH changes due to metabolism What is the purpose of differential medias to encourage growth of the desired bacteria B to isolate few bacteria to observe metabolism of the bacteria D. to stain bacteria E to determine motility 10 Why does Staphylococcus aureus turn yellow...
Q14. In the lab info it says that as a rule, most microbes can adjust to...
Q14. In the lab info it says that as a rule, most microbes can adjust to a range of salt concentrations. 7/29/2019 Which cell structure allows microbes to physically withstand hypotonic environments? Cell wall MSA has two properties. It is both selective and differential. When bacteria grow on this media, there is a visible difference between bacteria that ferment mannitol, and the bacteria that do not See Figure 2 (a)-effects of selective/differential media. Q15. Which of the following is correct...
6. Given the genetic map derived by Hfr minning of a bacteria as shown above, which...
6. Given the genetic map derived by Hfr minning of a bacteria as shown above, which of the markers could be more finely manned by co-transduction us PL its consid bolds about 2 min of DNA? Circle all that apply. A) his and lac B) lys and unl C bio and the D) all of the markers can be mapped by PI co transduction E) none of the markers can be mapped by PI co-transduction 7. Which of the following...
1.) Mycoplasmas are bacteria that lack a peptidoglycan las There are 27 an layer or outer membrane. Therefore, on the basis A) they would stain pink with gram stain. B) they would stain purple with gram stain C) they also lack a cell membrane. D) they would look just like animal cells. use light energy to generate chemical 2.) How would you classify a purple non-sulfur bacteria, which can u energy, but requires carbon from a source other than CO,...
Questions: 1. Define the term, pneumothorax. 2. Which bacteria typically respond to azithromycin? Highlight all that apply. (see example a") d. Legionella spp. e. Rickettsia spp. f. Chlamydia spp. Which bacteria typically respond to cephalosporins like ceftriaxone? a. Gram negative b. Gram positive C. Mycoplasmas 3. a. Gram negative b. Gram positive c. Mycoplasmas d. Enterobacteriaceae Pneumocytis jiroveci infection is not a common infection. What conditions usually predispose patients to Pneumocytis jiroveci infection? 4. 5. Which dimorphic fungi can cause...
1. Regarding the structure of bacteria cells: a) They always have a cell wall b) They are structurally the same as human cells c) They contain a distinct nucleus d) All of the above are correct 2. Cold sores and fever blisters are an example of a) A recurring bacterial infection b) A latent viral infection c) A nosocomial infection d) A fungal infection 3. Fungal infections: a) Are always a minor illness b) May present with pneumonia - like...
dyes, such as phenol red or methylene blue used in differential media? Why are dyes, such as A. to inhibit motility B. to stain microbes C to kill bacteria D. to see microbes to detect pH changes due to metabolism What is the purpose of differential medias to encourage growth of the desired bacteria B to isolate few bacteria to observe metabolism of the bacteria D. to stain bacteria E to determine motility 10 Why does Staphylococcus aureus turn yellow...
Q14. In the lab info it says that as a rule, most microbes can adjust to a range of salt concentrations. 7/29/2019 Which cell structure allows microbes to physically withstand hypotonic environments? Cell wall MSA has two properties. It is both selective and differential. When bacteria grow on this media, there is a visible difference between bacteria that ferment mannitol, and the bacteria that do not See Figure 2 (a)-effects of selective/differential media. Q15. Which of the following is correct...
6. Given the genetic map derived by Hfr minning of a bacteria as shown above, which of the markers could be more finely manned by co-transduction us PL its consid bolds about 2 min of DNA? Circle all that apply. A) his and lac B) lys and unl C bio and the D) all of the markers can be mapped by PI co transduction E) none of the markers can be mapped by PI co-transduction 7. Which of the following...
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