Question

In: Biology

Which of the following objects, if touched to the surface of trypticase soy agar (TSA) within...

  1. Which of the following objects, if touched to the surface of trypticase soy agar (TSA) within a Petri plate, would likely exhibit bacterial growth?

A. Your best friends nose

B. A strangers cell phone

C. A sterile swab

D. All of the above

E. A and B

  6. Which of the following is/are true of aseptic technique during streak plating?

A. It prevents airborne contaminants from entering the test tube culture you are working with.

B. It prevents airborne contaminants from entering the Petri plate.

C. It prevents cells from your culture from being left on the loop (to be touched by you or someone else the next time the loop is used).

D. All of the above

E. B and C

11. The primary function of the simple stain using methylene blue is to…

  1. Distinguish between Gram-positive and Gram-negative wall and membrane(s) composition and organization.
  2. Elucidate the shape of a bacterial capsule.
  3. Elucidate the shape of the cell itself.
  4. A and B
  5. B and C

13. If safranin was replaced with methylene blue in the Gram stain, then Gram-negative E. coli would appear?

A. Bluish-Purple

B. Green

C. Pink

D. Red

E. Yellow

  

Solutions

Expert Solution

1. A petri plate containing TSA will allow the growth of bacterial strain if samples were introduced to it. considering the given options, all of the given objects contains different types of bacteria on them. a persons nose contain bacteria. a cellphone contains bacteria on it. but if they touched or introduced to agar in the petriplate they may contaminate the agar medium and resists the growth of the bacteria.
hence the answer will be a sterile cotton swab which will be used to obtain the sample and touches on the agar medium which allows the groth of bacteria in the petri plate or slants.

5. aseptic technique during the streak plate method involves all the given options and the answer will be all the above.

11.methylene blue is a bacterial stain used to determine the morphology of the bacteria that is to determine the shape and to observe the internal structues of the bacteria. by the given options the answer would be elucidating the shape of cell and as well as bacterial capsule.


Related Solutions

Please write a brief description of each type of agar (MacConkey's, Tryptic Soy Agar, Mannitol Salt...
Please write a brief description of each type of agar (MacConkey's, Tryptic Soy Agar, Mannitol Salt Agar, and Blood Agar) and it's purpose (what is in it, why? and what type of bacteria are cultured with it when do you use each type?)
Which of the following illustrates a purpose for allocating costs to cost objects?
1Which of the following illustrates a purpose for allocating costs to cost objects?A) to defer income and reduce taxes payableB) to determine employee benefit costsC) to motivate employeesD) to provide information for economic decisionse) to reduce competition2The belief that corporate division with higher sales out to be allocated more of the company's advertising costs because it must of derived more benefit from the expenditures then a division with lower sales, is an example of which criteria for cost allocations decisionsA)...
Which of the following describes the process by which the surface area of a component is...
Which of the following describes the process by which the surface area of a component is hardened in such a way that leaves the core of that component softer and tougher? Age hardening Case hardening Quenching Annealing
Which of the following objects are chiral? Check all that apply: a wheelbarrow a mug with...
Which of the following objects are chiral? Check all that apply: a wheelbarrow a mug with MOM written to one side of the handle a mug with MOM written opposite the handle a remote control device a nail a screw a mug with BOB written opposite the handle a mug with BOB written to one side of the handle
2. If each of the following objects are rotating with the same angular velocity, ?, which...
2. If each of the following objects are rotating with the same angular velocity, ?, which would be the hardest to stop? (i.e., require the largest amount of work). A hoop with mass (1/2)M and radius 2R rotating about its cylinder axis. A solid cylinder with mass 4M and radius (3/4)R rotating about its cylinder axis. A solid sphere with mass 8M and radius (2/3)R rotating about any diameter. A hoop with mass 4M and radius (1/2)R rotating about its...
Which of the following sequence of the objects for data import is incorrect? choice one or...
Which of the following sequence of the objects for data import is incorrect? choice one or more Course, Company, Internship, Supervisor Supervisor, Student, Course, Internship, Company Supervisor, Student, Company, Work-For Student, Course, Prerequisite, Company Course, Company, Work-For, Supervisor, Student Supervisor, Company, Student, Course, Internship
Which one of the following is not attracted or repelled by charged objects? a. protons b....
Which one of the following is not attracted or repelled by charged objects? a. protons b. photons c. electrons d. Beta particles
Javascript Questions: 1. Which of the following is not a way to avoid adding objects to...
Javascript Questions: 1. Which of the following is not a way to avoid adding objects to the global namespace? a. Create and assign variables and event handlers within an IIFE. b. Use the var keyword. c. Use an object literal as a namespace. d. Create and attach an event handler function within the event    onload handler. 2. Data properties added by assignment are writable, configurable, and enumerable by default. Data properties added with the defineProperty method are a. writable,...
a) (milk and soy milk). which is the best source of lipids. You should take into...
a) (milk and soy milk). which is the best source of lipids. You should take into consideration the type and quantity of lipids present in the food, energy values (calories) and any other nutritional information you think is relevant to your judgement. b) (shredded wheat, corn flakes, rice krispies, frosted flakes, cocoa krispes and kellogg's All-Bran complet wheat flakes). which provides the best balance of vitamins and minerals and would be the healthiest option for breakfast. You should take into...
Wounds on the planter surface of the foot are normally associated with which of the following?...
Wounds on the planter surface of the foot are normally associated with which of the following? Question 43 options: 1) type 3 hypersensitivity response 2) peripheral neuropathy 3) excessive weight bearing 4) hyperesthesia All body mass index measurement less than 24.9 are normal. Question 44 options: 1) True 2) False Twelve months after the last menstrual period represents which of the following? Question 47 options: 1) beginning of menopause 2) beginning of peripause 3) menopause 4) end of menopause A...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT