what would be different for bacterial cells that happened to be inside the agar and those...

what would be different for bacterial cells that happened to be inside the agar and those that were on top of the agar in plates from the pour plate method? explain.

Solutions

Expert Solution

Bacterial cells that are inside the agar are

Obligate anaerobe - which cannot survive in the normal atmospheric concentrations of oxygen

Facultative anaerobe - which can grow with or without oxygen

Aerotolerant organisms - which do not require oxygen as they metabolise energy anaerobically.

Because the environment inside the agar is free from oxygen so anaerobic bacteria which doesn’t require oxygen for its growth will grow in it whereas aerobic bacteria which requires oxygen for its growth can’t grow inside the agar.

Bacterial cells that are present on the surface of the agar are

Obligate aerobes - which requires oxygen and can survive in the highest concentration of oxygen

Microaerophiles - which requires oxygen and can survive only in lesser concentration of oxygen for its growth.

Hence the anaerobic bacteria which survives only in an anaerobic environment cannot grow on the top of the agar

gladiator answered 1 year ago

Next > < Previous

Related Solutions

On chocolate agar, colonies are small raised, glistening, and gray-white. The bacterial cells are gram-negative and...

On chocolate agar, colonies are small raised, glistening, and gray-white. The bacterial cells are gram-negative and spherical, tending to occur in pairs with adjacent sides flattened. In gram stain preparations made from smears of purulent material, the cells tend to be located intracellularly. Biochemical results are oxidase positive, catalase positive, glucose positive, maltose positive, sucrose negative, lactose negative and beta lactamase positive.

4. Describe the appendages of bacterial cells. a. How motility is accomplished in bacterial cells....

4. Describe the appendages of bacterial cells. a. How motility is accomplished in bacterial cells. b. What are pilin and the role of pili and fimbriae. c. Explain the structure of flagella.

What cellular differences would you expect in cells found in the skeletal muscles compared to those...

What cellular differences would you expect in cells found in the skeletal muscles compared to those found in the human capillaries and the fat found in the hypodermis?

what has happened to wealth inequality in the U.S. in recent years? what accounts for those...

what has happened to wealth inequality in the U.S. in recent years? what accounts for those changes?

3. Which would be more accurate in terms of determining numbers of viable bacterial cells in...

3. Which would be more accurate in terms of determining numbers of viable bacterial cells in a population: an estimation of turbidity in broth, or a standard plate count? Why? Discuss sources of inaccuracy in both approaches.

Describe in details about the backround of bacterial; Bacillus cereus; agar media used and morphology?

Different types of cells have different types of integral membrane proteins. What would you expect to...

Different types of cells have different types of integral membrane proteins. What would you expect to reside in the plasma membrane of an epithelial cell that might be absent from that of an erythrocyte? How do such differences relate to the activities of these cells? explain d in etail and give reference. (15points)

vegetative bacterial cells will be killed at _Centigrade in minutes

vegetative bacterial cells will be killed at _______Centigrade in ______ minutes

QUESTION 10 A bacterial colony growing on a blood agar plate exhibits a clear zone around...

QUESTION 10 A bacterial colony growing on a blood agar plate exhibits a clear zone around the colony. What does this indicate? a. Antibiotic resistance b. Alpha hemolysin c. Beta hemolysin d. Gamma hemolysin e. Antibiotic susceptibility 5 points QUESTION 11 The presence of E. coli in drinking water indicates a. Fecal contamination b. Possible fecal contamination c. That it is from a free-living source d. Presence of fecal pathogens e. None of the above 5 points QUESTION...

what do bacterial cells need in order for blue-white screening to work?

Subjects