rRNA genes are contained in a tandem cluster or clusters. Sometimes these regions are called rDNA. These rDNA clusters are characterised by 

A. Tandem cluster 

B. Random cluster

C. Highly variable SNP/RFLP

D. Circular RFLP map

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#Question id: 373

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the hydroxyl ion (OH-) concentration of a solution of pH 8?

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#Question id: 374

#Unit 1. Molecules and their Interaction Relevant to Biology

The pH of a sample of blood is 7.4, while gastric juice is pH 1.4.  The blood sample has:

TLS Online TPP Program

#Question id: 375

#Unit 1. Molecules and their Interaction Relevant to Biology

The aqueous solution with the lowest pH is:

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#Question id: 376

#Unit 1. Molecules and their Interaction Relevant to Biology

Phosphoric acid is tribasic, with pKa of 2.14, 6.86 and 12.4. The ionic form that predominates at pH 3.2 is

TLS Online TPP Program

#Question id: 377

#Unit 1. Molecules and their Interaction Relevant to Biology

The aqueous solution with the highest pH is:

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#Question id: 378

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following statements about buffers is true?