The structure within a cell that distinguishes the cell as being eukaryotic, and prokaryotic is (A) Ribosomes (B) Cell membrane (C) Cell wall (D) Nucleus Answer : (D) Nucleus...
Which of the following would you NOT find in a bacterial cell (A) DNA (B) Cell membrane (C) Golgi apparatus (D) Ribosomes Answer : (C) Golgi apparatus...
The most important mechanism by which tetracycline antibiotics exert antimicrobial action is: A. They chelate Ca2+ ions and alter permeability of bacterial cell membrane B. They bind to 30S ribosomes ... peptide chain in the bacteria D. They interfere with DNA mediated RNA synthesis in bacteria Answer : B. They bind to 30S ribosomes and inhibit bacterial protein synthesis...
3. In a prokaryotic cell, DNA is: (a) Enclosed by nuclear envelop (b) Lacking (c) Not a genetic material (d) without a membrane Answer : (d) without a membrane...
What is true about ribosomes ? (1) These are self - splicing introns of some RNAs (2) The prokaryotic ribosomes are 80S, where āSā stands for sedimentation coefficient (3) These are composed of ribonucleic acid and proteins (4) These are found only in eukaryotic cells Answer : (3) These are composed of ribonucleic acid and proteins...
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