Difference Between Selective and Differential Media

Selective media are used to isolate a particular type of microorganism by giving a specific condition for the growth of that particular microorganism. Differential media are used to identify and differentiate microorganisms from a closely-related group with the help of unique growth patterns.

1. What is the major difference between differential and selective media?
2. What is the difference between selective and differential?
3. What is the difference between differential and selective media quizlet?
4. What is a differential media?
5. What is an example of selective media?
6. Is MacConkey agar selective or differential?
7. Is TSA selective or differential?
8. Is chocolate agar selective or differential?
9. Is pea selective or differential?
10. Why is MacConkey agar selective as well as differential quizlet?
11. What is the purpose of selective media quizlet?

What is the major difference between differential and selective media?

Selective media generally selects for the growth of a desired organism, stopping the growth of or altogether killing non-desired organisms. Differential media takes advantage of biochemical properties of target organisms, often leading to a visible change when growth of target organisms are present.

What is the difference between selective and differential?

Selective and differential media are used to isolate or identify particular organisms. Selective media allow certain types of organisms to grow, and inhibit the growth of other organisms. ... Differential media are used to differentiate closely related organisms or groups of organisms.

What is the difference between differential and selective media quizlet?

What is selective media? Allows the growth of some organisms while inhibiting the growth of others. What is differential media? Differentiates closely related organisms or groups of organisms based on the organism's biochemical characteristics.

What is a differential media?

Differential media contain compounds that allow groups of microorganisms to be visually distinguished by the appearance of the colony or the surrounding media, usually on the basis of some biochemical difference between the two groups.

What is an example of selective media?

Selective medium contain particular ingredients that inhibit the growth of certain microbes. An example of a selective medium is MacConkey agar. It contains bile salts and crystal violet, which interfere with the growth of many gram-positive bacteria and favor the growth of gram-negative bacteria.

Is MacConkey agar selective or differential?

MacConkey agar is an example of a medium that is both differential and selective. The presence of bile salts, as well as crystal violet, within the media prevent gram-positive organisms from growing.

Is TSA selective or differential?

TSA (Trypticase Soy Agar) and NA (Nutrient Agar) are General Purpose Media that are not selective or differential, their purpose is simply to grow many types of bacteria cheaply.

Is chocolate agar selective or differential?

Chocolate agar, a differential medium for gram-positive cocci.

Is pea selective or differential?

Phenylethyl alcohol agar (PEA) is a selective medium used to cultivate Gram positive organisms. The active ingredient, phenylethyl alcohol, inhibits or markedly reduces growth of Gram negative organisms by interfering with DNA synthesis. PEA also prevents Proteus species from swarming across the surface of the agar.

Why is MacConkey agar selective as well as differential quizlet?

Why is MacConkey agar selective as well as differential? It's selective to gram negative enteric bacteria because it contains bile salts, which inhibit most gram positive bacteria. It also contains lactose, which differentiates between gram negative lactose fermenter and gram negative non-fermenters.

What is the purpose of selective media quizlet?

The purpose of selective media is to isolate specific types of bacteria. Selective media contain chemicals that kill off some bacteria while helping other bacteria thrive.