Which one of the following is present in a bacterial cell?
- 28S rRNA
- 70S ribosome
- Chitinous cell wall
- Histones
The Correct Option is B
Solution and Explanation
Bacteria possess 70S ribosomes, which are smaller than the 80S ribosomes found in eukaryotes. They lack chitinous cell walls, which are characteristic of fungi, and histones, which are associated with eukaryotic chromatin
Top Questions on Microbiology
Match the LIST-I with LIST-II.
\[ \begin{array}{|l|l|} \hline \textbf{LIST I (Pathogen)} & \textbf{LIST II (Detection methods)} \\ \hline A. \ \text{Legionella} & I. \ \text{Enzyme-linked immunosorbent assay (ELISA) or EIA for detection of P-24} \\ B. \ \text{HIV} & II. \ \text{Cartridge based nucleic acid amplification test (CBNAAT) Gene Xpert} \\ C. \ \text{Mycobacterium} & III. \ \text{Urinary antigen test} \\ D. \ \text{Salmonella typhi} & IV. \ \text{Widal test for antibody against both O and H antigens} \\ \hline \end{array} \]Match the LIST-I (Microbial pathogen) with LIST-II (Clinical syndromes):
\[ \begin{array}{|l|l|} \hline \textbf{LIST I (Microbial pathogen)} & \textbf{LIST II (Clinical syndromes)} \\ \hline A. \ \textbf{Haemophilus aegyptius} & I. \ Upper respiratory tract infection \\ B. \ \textbf{Haemophilus influenzae} & II. \ Pneumonia \\ C. \ \textbf{Haemophilus ducreyi} & III. \ Conjunctivitis \\ D. \ \textbf{Haemophilus haemolyticus} & IV. \ Chancroid (STD) \\ \hline \end{array} \]
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The vector, shown in the figure, has promoter and RBS sequences in the 300 bp region between the restriction sites for enzymes X and Y. There are no other sites for X and Y in the vector. The promoter is directed towards the Y site. The insert containing only an ORF provides 3 fragments after digestion with both enzymes X and Y. The ORF is cloned in the correct orientation in the vector using the single restriction enzyme Y. The size of the largest fragment of the recombinant plasmid expressing the ORF upon digestion with enzyme X is ........... bp. (answer in integer)
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Which of the following is/are CORRECT for the two molecules shown?
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