In order to quantify unknown DNA templates, a standard dilution is prepared using DNA of known concentration. As the DNA accumulates during the early exponential phase of the reaction,an arbitrary point is taken where each of the diluted DNA samples cross. This is termed as_____

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#Question id: 8924

#XL - R Botany

Fossil evidence indicates that the following events occurred in what sequence, from earliest to most recent?

1. Protostomes invade terrestrial environments.

2. Cambrian explosion occurs.

3. Deuterostomes invade terrestrial environments.

4. Vertebrates become top predators in the seas.

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#Question id: 353

#XL - Q Biochemistry

Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?

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#Question id: 11566

#XL - T Zoology

If a person loses a large amount of water in a short period of time, he or she may die from dehydration. Antidiuretic hormone (ADH) can help reduce water loss through its interaction with its target cells in the ________.

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#Question id: 2311

#XL - T Zoology

The structure in which proteins and RNA are made into ribosomes is called the

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#Question id: 5373

#General Aptitude

The average of first 10 natural number is :