Name: Class: Date: b the binoenial ystem of clssifcasion. c. a mechanism of hori

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Name: Class: Date: b the binoenial ystem of clssifcasion. c. a mechanism of horizontal gene transfer d. a subspecies of organisms does not include a subgenus. e. a group of organisms that share common characteristics inherited from a common ancestor 28. Which statement about bacteria is FALSE? a. Some bacteria can photosynthesize. b. Bacteria are important decomposers. c. A small percentage of bacteria are pathogenic. d. Bacteria are not cellular and are sometimes not classified as life forms e. Bacteria convert atmospheric nitrogen into ammonia and then nitrates that can be used by plants. 29. Phylogenetic systematics produce branching diagrams called b. phenograms c. cladistic trees d. molecular elocks. c. phylogenic trees. 30. Where would you likely find Euryarchacota bacteria? a. hydrothermal vents b. cow digestive tracts e. cold ocean water d. hot sulfur springs e. salt ponds 31. Small hairlike structures made up of protein on the surface of bacteria are called: a. capsids b. fimbriae c. chromatids d. plasmids. e. virons 32. Most bacterial cells can keep from bursting in a hypotonic environment because of a. a stiff capsule b. a rigid cell wall. c. a tough cell membrane. d. an efficient water pump. e pumping large quantities of salts into the cell. 33. Gram-positive bacteria would stain in a gram stain because of a thick layer ofin their cell walls a. green; cellulose b. red; polysaccharides c. green; peptidoglycan Page 6 Copyright Cengage Leaming Powered by Cognero

Explanation / Answer

28. d- bacteria are not cellular and are not sometimes classified as life forms , this statement is not true because, bacteria are cellular life forms.

29. e- Phylogenetic trees are the branches produced by phylogenetic system of classification.

30. e- salt ponds is the place where the euryarchaeota are likely to be find.

31. b- Fimbrae are small hairlike structures that make up the protein of surface of some gram positive and gram negative bacteria.

32. b- Rigid cell wall prevents the bacteria from bursting in a hypotonic environment.

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