MEDGAR EVERS COLLEGE CITY UNIVERSITY OF NEW YORK DEPARTMENT OF BIOLOGY BIOL 202

Question

MEDGAR EVERS COLLEGE CITY UNIVERSITY OF NEW YORK DEPARTMENT OF BIOLOGY BIOL 202 MID TERM EXAM ANSWER ALL QUESTIONS 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 viroid 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. Ans- B
The correct sequence is Kingdom, Phylum, Class, Order, Family, Genus, and Species. Kingdom divided into smaller groups called phyla.
2. Ans- A
Bacterial spores are highly resistant to treatments that kill most other microorganisms.
3. Ans- B
Penicillin kills bacteria by disrupting the peptidoglycan cell wall of bacteria.
4. Ans- B
Heterocysts are specialized nitrogen-fixing cells that found in some filamentous cyanobacteria, such as Nostoc punctiforme, Cylindrospermum stagnate, and Anabaena sphaerica

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