TRUE/FALSE QUESTIONS-IF TRUE SHADE A; IF FALSE SHADE B 1. Classes include Kingdo
ID: 256977 • Letter: T
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TRUE/FALSE QUESTIONS-IF TRUE SHADE A; IF FALSE SHADE B 1. Classes include Kingdoms 2. Bacterial spores can survive treatment that would kill almost any other organism. 3. Penicillin acts against bacteria by suppressing their energy metabolism. 4. Anaerobic bacteria would not have to form heterocysts to fix nitrogen. 5. Saprobes parasitize plants. 6. Their high mutation rates allow bacteria to adapt to changes in their environments. 7. If a cell infected with a virus were treated with a drug that blocks mRNA translation, the virus would still be able to reproduce. 8. Humankind's most prevalent disease is caused by an apicomplexan. 9. Photosynthesis by protists supports aquatic food chain 10. Many fungi depend on plants for mineral absorption. 11.The evolutionary advantage of brightly-colored fruits is that bright colors aid seed dispersal. 12. Coenocytic fungi have many nuclei in one extensive cytoplasm. 13. The disease called kuru, a fetal neurodegenerative disorder, is caused by a viroic 14. Viroids are RNA not covered by a capsid 15. All members of the kingdom fungi reproduce both sexually and asexually. 16. Transduction occurs when a virus infects a bacterial cell and then transfers some of the cell's DNA to another bacterium. 17. Fertility plasmids also known as F factors, allow bacteria to mate with each other. 18. Gametes are produced in gametophytes that are part of a gametangial plant. 19. Antheridia and archeogonia are spore-producing structures on the sporophyte plant. 20. Spore mother cells undergo meiosis and develop into haploid gametes 21. Chemoautotrophs are able to use energy from the sunlight to synthesize organic compounds. 22. Bacteria cells do not have ribosomes that is why they cannot make proteins. 23. Protists regulate their water content using contractile vacuole 24. Bacteria living in the human gut produce vitamins. 25. In nonvascular plants the sporophyte is the dominant stage.Explanation / Answer
1) False, In taxonomy, kingdom is the second highest taxonomic rank just below domain. As such, classes do not include kingdon, rather it's the other way round. Classes come under kingdom.
2) True, Bacterial spores are highly resistant to sterilization methods that are very much capable of killing other organisms. Endospores of bacteria are highly heat tolerant and can survive in such state for millions of years.
3) False, Penicillin belongs to a class of beta-lactam antibiotics. It works by Inhibiting transpeptidase enzyme that catalyzes the final step in cell wall biosynthesis, the cross-linking of peptidoglycan. It does not suppress the energy metabolism of bacteria.
4) True, Nitrogen fixation requires anaerobic conditions because oxygen irreversibly inactivates the nitrogenase enzymes involved in nitrogen fixation. Heterocysts are specialized nitrogen fixing cells found in aerobic mitrogen fixing microbes. It provides the anerobic conditions that is necessary for nitrogen fixation. Anerobic bacteria have no need for heterocyst, since oxygen do not pose a problem for them as it is simply absent from yheir habitat.
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