SampleQns_Microbes DS

SampleQns_Microbes DS - The Microbial World Viruses,...

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The Microbial World – Viruses, Bacteria, Protists, Fungi Dr Deb Stenzel Some sample exam questions: Question 1. Which of the following best describes a virus? (a) prokaryotic, photosynthetic (b) eukaryotic, intracellular parasite (c) free-living heterotroph (d) obligate intracellular parasite (e) eukaryotic, photosynthetic Question 2. Which one of the following statements about viruses is correct? (a) all are visible with a light microscope (b) all have the same size and shape (c) all cause diseases in humans (d) all have a membranous envelope and protein tail (e) all contain nucleic acid enclosed in a protein capsid Question 3. Which one of the following molecules in the cell walls of bacteria is stained in the “Gram reaction”? (a) cellulose (b) nucleic acid (c) chitin (d) peptidoglycan (e) protein Question 4. Which one of the following statements about bacteria is correct? (a) bacterial cells conjugate to mutually exchange their entire genomes (b) bacterial genetic material is confined within a nuclear envelope (c) genetic variation in bacteria is not known to occur (d) bacteria skip sexual life cycles because their life is too short (e) bacteria divide by binary fission, without mitosis or meiosis Question 5. If all the prokaryotes on Earth suddenly disappeared, which of the following would be the most likely and most direct result? a)
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SampleQns_Microbes DS - The Microbial World Viruses,...

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