Page 177 - MNU microbiology theoritical 2025

General Microbiology & Immunology (PM 401) Second level Semester 4 2024/2025

Q1: Choose the best correct answers in the following statements

1- Which of the following is not found within DNA?
A. Thymine
B. Phosphodiester bonds
C. Complementary base pairing

D. Amino acids

2- Which of the following may use RNA as its genome?
A. a bacterium
B. an archaeon
C. a virus
D. an eukaryote

3- If a DNA strand contains the sequence 5ʹ-ATTCCGGATCGA-3ʹ, which
of the following is the sequence of the complementary strand of DNA?
A. 5ʹ-TAAGGCCTAGCT-3ʹ

B. 5ʹ-ATTCCGGATCGA-3ʹ
C. 3ʹ-TAACCGGTACGT-5ʹ
D. 5ʹ-TCGATCCGGAAT-3ʹ

4- Which of the following statements about base pairing in DNA is
INCORRECT?
A. Purines always base pairs with pyrimidines
B. Adenine binds to guanine
C. Base pairs are stabilized by hydrogen bonds.
D. Base pairing occurs at the interior of the double helix.

General Microbiology & Immunology (PM 401) theoretical handbook Page 166