14) Cells form a arrangement when cells in a chain snap back upon cach other, fo

Question

14) Cells form a arrangement when cells in a chain snap back upon cach other, forming a now cells oriented side by side. 14) A) sareina B) strep C) staph D) tetrad E) palisade 15) 15) Which term is not used to describe bacterial cell shapes? A) tetrad B) spirochete C) bacillus D) coccus E) vibrio 16) Endospores are 16) A) metabolically inactive. B) resistant to heat and chemical destruction C) living structures. D) resistant to destruction by radiation. E) All of the choices are correct 17) Which of the following is mismatched? 17) A) nucleoid- hereditary material B) cytoplasm- dense, gelatinous solution C) ribosomes -protein synthesis D) plasmids-contain genes essential for growth and metabolism E) inclusions- excess cell nutrients and materials 18) The bacterial chromosome 18) A) is part of the nucleoid B) forms a single linear strand of DNA. C) is located in the cell membrane. D) contains all the cell's plasmids 19) Which of the following is NOT true of the outer membrane? 19) A) The lipid portion of the lipopolysaccharide layer is an endotoxin B) The upper most layer is made of lipopolysaccharides C) The porin proteins create channels through the outer membrane D) Gram-positive bacteria have an outer membrane E) The inner most layer is a phospholipid bilayer 20) The site/s for most ATP synthesis in prokaryotic cells is/are the 20) A) mitochondria B) ribosomes C) inclusions D) cell membrane. E) cell wll.

Explanation / Answer

14. E (this kind of arrangement is called palisade)

15. A (tetrad is not used for the determination of bacterial cells)

16. E (all are correct as endospore is a small, dormant, resistant derivative of a bacterial cell that germinates under favorable growth conditions into a vegetative cell)

17. D (plasmids are not necessary for growth and metabolism)

18. A (bacterial chromosome is part of the nucleoid.)

19. D (Gram positive bacteria have an outer membrane)

20 D (mostly ATP synthesis occurs in cell membrane in prokaryotes)

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