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TLS Online TPP Program

#Question id: 3939

When used to describe the RNA polymerases, the term “processive” refers to:

#XL - Q Biochemistry

  1. the ability to recognize and bind to a promoter region.

  2. the ability to remain attached to DNA and form long RNAs.

  3. the ability to add nucleotide triphosphates to a growing RNA chain.

  4. all of the above.

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TLS Online TPP Program

#Question id: 374

#XL - Q Biochemistry

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: 374

#XL - S Microbiology

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

#XL - S Microbiology

The aqueous solution with the lowest pH is:
TLS Online TPP Program

#Question id: 376

#XL - S Microbiology

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

#XL - S Microbiology

The aqueous solution with the highest pH is:
TLS Online TPP Program

#Question id: 378

#XL - S Microbiology

Which of the following statements about buffers is true?