A team of conservation biologists, surveying a population of frogs on an island, captured and marked 312 individuals in the first sample. In a second sampling, 3 days later, the team caught 140 individuals of which 26 were previously marked. The total number of frogs on the island is estimated to be . (Use decimal notation, not fractions or percentage)

TLS Online TPP Program

#Question id: 15260

#Unit 2. Cellular Organization

Among the following which kind of media is not used for the detection of E. coli and related bacteria in water supplies and elsewhere.

1.  Endo agar

2. Peptone 

3. Eosin methylene blue agar

4. MacConkey agar

5. Beef extract

Choose the correct combination

TLS Online TPP Program

#Question id: 15261

#Unit 2. Cellular Organization

Lactose and neutral red dye are used in MacConkey agar. This type of media is an example of 

TLS Online TPP Program

#Question id: 15262

#Unit 2. Cellular Organization

A media which makes easier to distinguish colonies of the desired organism from other colonies growing on the same plate.

TLS Online TPP Program

#Question id: 15263

#Unit 2. Cellular Organization

Pure colonies also can be obtained from

TLS Online TPP Program

#Question id: 15264

#Unit 2. Cellular Organization

What chemical can be used to deplete the oxygen present in the culture medium

TLS Online TPP Program

#Question id: 15265

#Unit 2. Cellular Organization

The growth of microorganisms in a food product is influenced by the availability of