Bacterial Shape, Size & Structure QuizBy Medicallabstudies / June 30, 2025 Q91. The bacterial nucleoid contains: A) Linear chromosomes B) Single circular DNA C) Histone‑bound DNA D) Nuclear membraneHint: No membrane separates DNA from cytoplasm. Q92. A key difference between bacterial and eukaryotic DNA is absence of _____ in bacteria. A) Exons B) Promoters C) Introns D) Ribosomal genesHint: Genes are usually continuous. Q93. Active transport across bacterial membrane chiefly uses: A) Steroids B) ATP‑binding cassette proteins C) Flagellar motion D) EndocytosisHint: No endocytosis in prokaryotes. Q94. Precursors of cell‑wall components are synthesized at the: A) Cytoplasmic membrane B) Nucleoid C) Mesosome D) CapsuleHint: Lipid carriers flip precursors across membrane. Q95. The amorphous cytoplasmic matrix normally contains all EXCEPT: A) Ribosomes B) Volutin granules C) Plasmids D) TelomeraseHint: Telomerase is eukaryotic. Q96. The region containing genetic material in bacteria is called the: A) Mesosome B) Nucleoid C) Capsid D) EndosporeHint: Not membrane‑bound. Q97. Plasmids replicate: A) Only during cell division B) Independently of chromosome C) Only in presence of virus D) Only on ribosomesHint: Gives flexibility in gene content. Q98. Selective toxicity of many antibiotics is based on differences in: A) Membrane cholesterol B) Ribosomal RNA and protein C) Cell size D) Capsule thicknessHint: 70S vs 80S ribosomes. Q99. Which prokaryote contains sterols in its membrane? A) Streptococcus B) Mycoplasma C) E. coli D) Bacillus Hint: Unique among bacteria. Q100: What type of DNA molecule are plasmids? A. Single-stranded circular B. Double-stranded linear C. Double-stranded circular D. Single-stranded linear Hint: Plasmids are circular and double-stranded, allowing independent replication. ✅ Answer Key: Q91: B) Single circular DNA Q92: C) Introns Q93: B) ATP‑binding cassette proteins Q94: A) Cytoplasmic membrane Q95: D) Telomerase Q96: B) Nucleoid Q97: B) Independently of chromosome Q98: B) Ribosomal RNA and protein Q99: B) Mycoplasma Q100: C) Double-stranded circular Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Previous Bacteria Compared with Other Microorganisms – Quiz Related Posts Bacteria Compared with Other Microorganisms – Quiz Microbiology Quiz, Uncategorized Leave a Comment Cancel ReplyYour email address will not be published. Required fields are marked *Type here.. Name* Email* Website Save my name, email, and website in this browser for the next time I comment.
