Biology Fsc Part 1 Chapter 2 Online Test With Answers

Biology Fsc Part 1 Chapter 2 Online Test

Sr. # Questions Answers Choice
1 The mats on the sediments in the sea are dominatedby  Cyanobacteria Pseudomonas Actinomycetes Chemosyntheitc bacteria
2 The group of bacterial which played most important role in history  of the arth for increasing  free oxygen in atmosphere. Cyanobacteria sprroplasmas Mycoplasmas Pseudomonas
3 margulis and Schwartz classified bacterial into...............phyla. 8 16 27 5
4 The fossil record of prokaryotes shows that archea and bacterial were abundatn...............years ago. 2.5 million  3.5 million  3.5 billion  1.5 billion 
5 The structure which connects basal body with filament, in bacteria is. Rotating ring Hook Pilus Plasmid
6 Basal body consisting of of rotating rings is found in Gram negative Gram positive Both a and b None of them
7 The bacterial with tuft of flagella at both poles is Amphitrichous Atrichous Pritrichous Lophotrichous
8 Spirochetes move by  Flexing Axial filament Modified flagellum All of above
9 The type of movement in bacteria whcih is due to expansion created by pushign force of dividing cells is. Sliding Gliding Twitching Swarming
10 The movement used to move over surfaces mediated by pili is called. Crawling Twitching Both a and b Flagella movement
11 Which of the following is similar to twitching movements. Gliding Crawling Browninan movement Swarming
12 Counter clockwise rottion of flagellium pushes the cell Forward Backward Medially Laterally
13 When a bacterial popuation moves together by means of flagella. It is called. Twitching Crawling Swarming Brownian movement
14 The proecess by which bacteria make endospores is called. Sporoulation  Fragmentation  Sporogony Lysis
15 Many bacterial can survive extended periods of harsh conditions by forming specialized cells cailed. Exospores Endospores megaspores Microspores
16 Smaller subunit of bacterial ribosome sediments at. 50 S 30 S 70 S 80 S
17 The structur ein bacteria, that enable them to resist against antibiotics Plasmid Ribosomes Cell wall Cell membrane
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