# A 1 ml sample of culture liquid contained 1000 viable bacterial cells. You serially diluted it twice, performing 10-fold or 1/10 dilutions into a final volume of 1 ml each time. As a result you have three tubes with 100, 10-1, or 10-2 of diluted culture. How many total cells are in the 1 ml of your 10-2 dilution tube?

there are 10 viable bacterial cells in 1 ml in the 1/100 dilution tube

Explanation:

in 1ml there is 1000 viable bacterial cells → diluted with 9 ml of solvent (10 ml in total)→  1000 viable bacterial cells in 10 ml (fist tube)

now we take 1 ml of the first tube into the second empty tube → has 1000/10 = 100 viable bacterial cells on 1 ml → diluted with 9 ml of solvent (10 ml in total)→  100 viable bacterial cells in 10 ml (second tube)

then we take 1 ml of the second tube into the third empty tube → has 100/10 = 10 viable bacterial cells in 1 ml → diluted with 9 ml of solvent (10 ml in total)→  10 viable bacterial cells in 10 ml (third  tube)

therefore there are 10 viable bacterial cells in 1 ml in the 1/100 dilution tube

## Related Questions

The phosphorus cycle differs from the biogeochemical cycles in that?

It doesn't produce gas

Unlike other biogeochemical cycles, phosphorus and phosphorus based compound are usually solids at a typical temperature and pressure that usually found on the earth

The production of its gas only occur in specialized conditions

When you place your hand on a hot stove you remove it after a period of time. Then when you are given some morphine, you place your hand on the hot stove and leave it on the stove longer than before. A tone is then given, you are given the morphine and place your hand on the stove. What will occur

The correct answer is - person will remove hand faster.

Explanation:

The tone is neutral stimulus that is not cause any response naturally. It was used as the sound of bell in Pavlov experiments. Unconditioned stimulus and a prior neutral stimulus together form a tone that is an association of the both.

It initiates the response that was were caused by the beginning of the stimulus and tone become the conditioned stimulus. In this case tone cause the initial response. In this event individual will remove his hand faster.

Thus, the correct answer is - person will remove hand faster.

The specialization of a certain cell or groups of cells for a specific function is called _____?