3 years ago

Divide a 16/500 dilution into four sequential dilutions

Biology

1 answer:

Natali5045456 [20]3 years ago

8 0

4/125
4/125
4/125
4/125

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After protien translation os commplete newly -formed polypeptife

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Explain what you would have to do to the date on your watch if you were tocross over the International Date Line from east to we

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(b)

Explanation:

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3 years ago

A close and permanent association between organisms of different species is called

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Symbiotic Relationship.

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3 years ago

The shape of the beaks of Darwin's finches and industrial melanism are often cited as examples of the process of ________ leadin

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Answer: The answer is natural selection

Explanation:

Natural selection explains how certain desirable traits like;

- shape of the beaks of Darwin's finches: to help them feed more easily

- industrial melanism to raise a population of dark-coloured organisms to evolve from pre-existing light coloured ones in industrial areas where the surrondings are blackened with soot;

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2 years ago

You are given a 1 liter bacterial culture in exponential stage of growth. The generation time of the bacteria is known to be 30

nydimaria [60]

Answer:

Option-A

Explanation:

A bacteria divides by binary fission which divides a parent bacteria into the two daughter cells and generation time refers to the average time difference between two consecutive generations.

The bacterial cell grows by the exponential function that is by $2^{number of generation}$ x initial population of bacteria.

In the given question,

Initial population

the initial population of bacteria - 2x 10³ per ml

So per liter, the bacterial population will be 2 x 10 ⁶

Generation time

1 generation time of bacteria is 30 min.

so 5 hours will have-   $\frac{300}{30}$ = 10 generations

New bacterial population

Using formula $2^{number of generation}$ x initial population of bacteria

$2^{10}$ x (2 x 10⁶)

= 1048 x (2 x 10⁶)

2048 x 10⁶

Thus, Option-A is the correct answer.

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2 years ago