1) MacConkey agar is elective because a) It can identify mixed acid producing E.coli b) Contains...
1) MacConkey agar is elective because
a) It can identify mixed acid producing E.coli
b) Contains bile salts and crystal violet
c) It contains lactose
d) It contains glucose
Homework Answers
Option b is correct. MacConkey agar is selective because it contains bile salts and crystal violet. They inhibit the growth of gram positive bacteria and makes it selective for gram negative bacteria.
Add Answer to:
1) MacConkey agar is elective because
a) It can identify mixed acid producing E.coli
b) Contains...
can somrone help me write an introduction for each agar. thank you ? Introduction: Selective and...
can somrone help me write an introduction for each agar. thank you
?
Introduction: Selective and differential media are used frequently in Microbiology Pathology Labs to identify a known group of bacteria from a complex mix of other bacteria. The medium is designed to select against as many of the background organisms as possible by using a medium in which they will not grow but the organisms under investigation can grow hence the "Selective" part of the name. Any assayable...
A. Which strain is the wild-type E.coli? Explain how you know this. B. Which strain contains...
A. Which strain is the wild-type E.coli? Explain how you know
this.
B. Which strain contains the nonsense mutation in the CRP
protein gene? Explain how you know this.
C. Which strain contains the deletion mutation in the lac operon
operator sequence? Explain how you know this.
knowledge about the lac operon system AND knowledge Problem set about the Lac operon (these problems require knowledge about the lac operon system AND about consequences of mutations) You are working with three...
Background Background continued... Questions Experiment 2: TSI The triple sugar iron agar (TSI) can identify gram...
Background
Background continued...
Questions
Experiment 2: TSI The triple sugar iron agar (TSI) can identify gram negative bacteria based on how they metabolize carbohydrates. It contains three carbohydrates-glucose, lactose and sucrose, in addition to sodium thiosulfate which some bacteria use in the production of hydrogen sulfide (H2S). It also contains iron in the ferrous form and phenol red as a pH indicator. TSI is poured into a tube when heated to a liquid form, and the tube is slanted as...
1)An eosin methylene blue (EMB) agar plate was inoculated with four different species of bacteria. Below...
1)An eosin methylene blue (EMB) agar plate was inoculated with four different species of bacteria. Below are the colony growth after inoculation. Which shows a vigorous lactose fermenter? A) A brown media with an oblong culture of bacteria. The colony shows vigorous growth and is the same color as the media. B) A brown media with an oblong colony of bacteria that experiences weak growth. The color of the media is visible through the translucent white color of the bacterial...
Food Microbiology Laboratory question, **********Question********** (PLease help me to figure out the answers after reading/ using...
Food Microbiology Laboratory question,
**********Question********** (PLease help me to figure out the
answers after reading/ using following text, thx a lot)
1. Deeply analyse and explain the
result of this lab (results is provide in the following
text)
---------------------
Laboratory: Microbiological analysis of food products
(3M Petrifilm E.coli/Coliform (EC) count
plate)
Used media:3M Petrifilm E.coli/Coliform (EC) count plate
3M EC count plates are designed to identify both E. coli and
other coliforms. It contains crystal violet and bile salt which...
B. Reaction mechanisms (media, reagents, enzymes, products) 1. Media. Match the name of medium with the...
B. Reaction mechanisms (media, reagents, enzymes, products) 1. Media. Match the name of medium with the physiological test. For some tests, multiple media can be used. a. Kligler's iron agar b. MR-VP broth c. Bromocresol Purple (BCP) lactose d. SIM medium e. Simmon's citrate agar f. Skim milk agar 8. Spirit Blue agar h. Tryptone broth _2,3 butanediol fermentation carbohydrate fermentation _casein hydrolysis citrate utilization hydrogen sulfide production mixed acid fermentation triglyceride hydrolysis _tryptophan degradation
microbiology help TOT Zoo Add Page Insert Table Chart Text Shape Media Comment These questions will...
microbiology help
TOT Zoo Add Page Insert Table Chart Text Shape Media Comment These questions will serve in lieu of a lab report for Exercise 15, 16, and 17 You will find the answer to these questions in the background, procedure, results and interpretation sections of manual Exercise 15, 16, and 17, videos, Actions of Selective and Differential Media Chart, and the Principle/Theory article in homework section.) General Questions 1. What is the purpose (function) of selective media? (How does...
Q.8. . Tributyrin is a A) Amino acid B) A starch C) A triglyceride D) None...
Q.8. . Tributyrin is a A) Amino acid B) A starch C) A triglyceride D) None are correct O. 9. . What color is a positive urease test ? A) yellow B) Bright pink D) green e bacterial exoenzymes are not correctly mached with their fiunction to degrade macromolecules? A) Amylase starch B) Cellulase cellulose C) Tryptophanase - tryptophan D) Lipase -casein Q.11. . Kligler's Iron agar media A) Is a multiple test medium B) It detects fermentation of glucose...
1. Ketosis can result from A. the lack of dietary carbohydrates. B. the lack of dietary...
1. Ketosis can result from A. the lack of dietary carbohydrates. B. the lack of dietary protein. C. excess dietary protein. D. excess dietary carbohydrates. 2.Triglycerides are composed of the elements A. C and H B. O, H, and P C. C, H, O, and N D. C, H, and O 3. Which food contains the most fat per serving? A.mayonnaise B. raisins C. oatmeal D. applesauce 4.Bile can be synthesized from _____ . A. glucagon B. glycogen C. cholesterol...
Match each GPB with its description or characteristics. 21. Gardnerella vaginalis _2. Bacillus anthracis - 3. List...
Match each GPB with its description or characteristics. 21. Gardnerella vaginalis _2. Bacillus anthracis - 3. Listeria monocytogenes _4. Lactobacillus acidophilus _5. Erysipelothrix rhusiopathiae U 6. Nocardia asteroides _7. Corynebacterium diphtheriae 1. Large spore forming GPB 2. Pleomorphic, club-shaped non-branching GPB 3. Tiny motile GPB that can grow at 25°C and 35°C 4. Partially acid fast, branching GPB 5. GPC with simple branching that produces acid 6. Pleomorphic Gram positive to Gram variable bacillus 7. Thin GPB appearing in chains...
can somrone help me write an introduction for each agar. thank you
?
Introduction: Selective and differential media are used frequently in Microbiology Pathology Labs to identify a known group of bacteria from a complex mix of other bacteria. The medium is designed to select against as many of the background organisms as possible by using a medium in which they will not grow but the organisms under investigation can grow hence the "Selective" part of the name. Any assayable...
A. Which strain is the wild-type E.coli? Explain how you know
this.
B. Which strain contains the nonsense mutation in the CRP
protein gene? Explain how you know this.
C. Which strain contains the deletion mutation in the lac operon
operator sequence? Explain how you know this.
knowledge about the lac operon system AND knowledge Problem set about the Lac operon (these problems require knowledge about the lac operon system AND about consequences of mutations) You are working with three...
Background
Background continued...
Questions
Experiment 2: TSI The triple sugar iron agar (TSI) can identify gram negative bacteria based on how they metabolize carbohydrates. It contains three carbohydrates-glucose, lactose and sucrose, in addition to sodium thiosulfate which some bacteria use in the production of hydrogen sulfide (H2S). It also contains iron in the ferrous form and phenol red as a pH indicator. TSI is poured into a tube when heated to a liquid form, and the tube is slanted as...
Food Microbiology Laboratory question,
**********Question********** (PLease help me to figure out the
answers after reading/ using following text, thx a lot)
1. Deeply analyse and explain the
result of this lab (results is provide in the following
text)
---------------------
Laboratory: Microbiological analysis of food products
(3M Petrifilm E.coli/Coliform (EC) count
plate)
Used media:3M Petrifilm E.coli/Coliform (EC) count plate
3M EC count plates are designed to identify both E. coli and
other coliforms. It contains crystal violet and bile salt which...
B. Reaction mechanisms (media, reagents, enzymes, products) 1. Media. Match the name of medium with the physiological test. For some tests, multiple media can be used. a. Kligler's iron agar b. MR-VP broth c. Bromocresol Purple (BCP) lactose d. SIM medium e. Simmon's citrate agar f. Skim milk agar 8. Spirit Blue agar h. Tryptone broth _2,3 butanediol fermentation carbohydrate fermentation _casein hydrolysis citrate utilization hydrogen sulfide production mixed acid fermentation triglyceride hydrolysis _tryptophan degradation
microbiology help
TOT Zoo Add Page Insert Table Chart Text Shape Media Comment These questions will serve in lieu of a lab report for Exercise 15, 16, and 17 You will find the answer to these questions in the background, procedure, results and interpretation sections of manual Exercise 15, 16, and 17, videos, Actions of Selective and Differential Media Chart, and the Principle/Theory article in homework section.) General Questions 1. What is the purpose (function) of selective media? (How does...
Q.8. . Tributyrin is a A) Amino acid B) A starch C) A triglyceride D) None are correct O. 9. . What color is a positive urease test ? A) yellow B) Bright pink D) green e bacterial exoenzymes are not correctly mached with their fiunction to degrade macromolecules? A) Amylase starch B) Cellulase cellulose C) Tryptophanase - tryptophan D) Lipase -casein Q.11. . Kligler's Iron agar media A) Is a multiple test medium B) It detects fermentation of glucose...
Match each GPB with its description or characteristics. 21. Gardnerella vaginalis _2. Bacillus anthracis - 3. Listeria monocytogenes _4. Lactobacillus acidophilus _5. Erysipelothrix rhusiopathiae U 6. Nocardia asteroides _7. Corynebacterium diphtheriae 1. Large spore forming GPB 2. Pleomorphic, club-shaped non-branching GPB 3. Tiny motile GPB that can grow at 25°C and 35°C 4. Partially acid fast, branching GPB 5. GPC with simple branching that produces acid 6. Pleomorphic Gram positive to Gram variable bacillus 7. Thin GPB appearing in chains...
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