44. Which of the following statements is NOT true regarding Tag DNA polymerase? (A) Potassium chloride promotes its activity. (B) Optimum temperature for its activity is 75-80C. (C) It is a thermostable DNA polymerase 1. (D) It contains 3' to 5' exonuclease activity.

5. Which of the following statements is INCORRECT for retroviruses? (A) They are enveloped RNA virus. (B) They encode reverse transcriptase and replicate through a DNA intermediate. (C) Some of them produce tumors in the infected animals. (D) Retroviruses include human immunodeficiency virus (HIV) which primarily infects CD8 T cells.

44. Which of the following statements is NOT true regarding Tag DNA polymerase?
(A) Potassium chloride promotes its activity.
(B) Optimum temperature for its activity is 75-80C.
(C) It is a thermostable DNA polymerase 1.
(D) It contains 3' to 5' exonuclease activity.

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