How would you verify that the colonies that grew on a MacConkey agar plate were Gram...
MacConkey agar questions 4. Would this bacteria be a Gram positive or a Gram negative? How do you know? 5. Does this bacteria ferment lactose? How do you know?
74.What would colonies of Salmonella or Shigella look like on MacConkey agar? a. purple colonies b. pink colonies with a black center clear colonies with a black center d. smooth colorless colonies
See Hint Consider the colonies growing on this sorbitol MacConkey agar plate. Which component of the medium is being metabolized by the ones that appear colorless? Troy Biological BD Worldwide Choose one: A. peptone B. agar C. neutral red D. sorbitol E. sodium chloride < 18/18
A specimen sample was streaked in a plate of agar. Only gram negatives grew on the agar and certain gram negatives resulted in the change from a green color to yellow
The following results were obtained after cultivating four different microbes on MacConkey medium: gram-positive, lactose positive = no growth gram-negative, lactose positive = dark colonies with pink halos gram-positive, lactose negative = no growth gram-negative, lactose negative = pale colonies with no halos Based upon these results, what to what category of media does MacConkey belong?
help please What type(s) of bacteria are favored to grow on eosin methylene blue (EMB) agar? Select one: O a Gram positive bacteria that can undergo anaerobic respiration. O b. Gram negative bacteria that can ferment glucose and/ or lactose, O c. Only those bacilli that can utilize citrate as a main carbohydrate source. O d. All Bacteria would grow equally well A bacterial species grows on a MacConkey agar plate, and the colonies have dark red color with hazy...
Background Ques part 1) Selective and differential media; EMB and Tsl agar bacill inhabit a wide range of environments. Many are significant pathogens, such a coli, Salmonella, Shigella, but many compose our normal flora and inhabit soil and water. Many gra negative bacilli that inhabit our large intestine are called enterics. Enteric pathogens are the most frequent cause of diarrheal illnesses and have become significant contaminants spread through foo Some can also cause respiratory and urinary infections. Experiment 1: EMB...
2. You are given a mixed broth culture of Pseudomonas fluorescence (Gram-negative) and Clostridium sporogenes (Gram-positive). You are instructed to isolate and purify each bacterial species. How are you going to do it? Your goal is to have a plate of pure P. fluorescence with isolated colonies and a plate of pure C. sporogenes with isolated colonies. Explain in detail how you are going to perform the exercise. You can use any media you like such as nutrient agar plate,...
I need help answering these questions Part 3: MacConkey agar and EMB agar Watch the following video (LINK) in this folder. You will be answering questions on this video, so please go over the questions first. Go over exercises 4-4 and 4-5. Answer the following questions 1. Define Enterobacteriaceae and coliforms (may have to do some research online). 2. What Enterobacteriacae is EMB and MacConkey agar selective for? 3. What carbohydrate is contained in both EMB and MacConkey agar? 4....
1. What is the significance of producing isolated bacterial colonies on an agar plate? 2. Briefly, explain how the formation of a bacterial colony occurs on an agar plate. 3. Why must you flame the loop between each streak when performing the streak plate techniques? 4. How can you determine whether a culture that you have been provided with is a "pure" culture? 5. You streak a culture and find that the colonies in Quadrant 4 are larger in diameter...