Biology Exam5 33. A. How do most prokaryotes reproduce asexually? Explain this p
ID: 280948 • Letter: B
Question
Biology Exam5 33. A. How do most prokaryotes reproduce asexually? Explain this process. B. What is conjugation, and why is it important to prokaryote reproduction? 34. A. When environmental conditions become harsh, some bacteria form endospores. What are endospores? B. why is endospore formation not a form of bacterial reproduction? 35. There is a mutualistic symbiotic relationship between E.coli bacteria (in the intestines) and humans A. What benefit do the E.coli bacteria get from living in the intestines of humans? ?. what benefit do humans get from having E. coli bacteria live in their intestines? 36 2341Explanation / Answer
Answer 33A: Most of the prokaryotes reproduce asexually by the process of binary fission. In binary fission first DNA replicates and form the two identical copies of DNA molecule. Both DNA molecules attach at the different point on the cell membrane and cell increases their size. Finally, the cell membrane extends and from the septum followed by formation of cell wall and separation of two new cells.
Answer 33B: Conjugation is the process of horizontal gene transfer from a donor cell to a recipient cell by cell to cell contact via conjugation tube. Conjugation allows the genetic variation in bacterial cells.
Answer 34A: Endospore is a dormant, inert, tough and non-reproductive structure formed by the bacterial cell in response to an unfavorable environmental condition.
Answer 34B: Endospore formation is not a form of bacterial reproduction because it does not produce the new bacterial cell population but forms the dormant form of cell to protect yourself from an unfavorable environmental condition only as bacteria reproduce by binary fission a kind of asexual reproduction.
Answer 35A: E.coli bacteria get nutrients from the intestine and colonize at the surface of the intestinal wall as work as normal commensals.
Answer 35B: Humans get several benefits from E.coli residing in the intestine which includes:
a. Helps in the digestion of food.
b. Compete with the pathogenic microorganism.
c. Produces enzyme and vitamins
d. Boost the immunity.
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