20) Proteins found in the bacterial cell membrane that are located in the middle layer of the cell
membrane are called: a) peripheral proteins b) integral proteins c) transmembrane proteins d)
cytoskeletal proteins e) amphipathic proteins
21) The portion of the proteins that are present inside the cell membrane contain amino acids that are: a)
polar b) hydrophilic c) hydrophobic d) planar e) amphipathic
22) The portion of the proteins that are present on either surface the cell membrane contain amino acids
that are : a) polar b) hydrophilic c) hydrophobic d) planar e) amphipathic
23) The phospholipid molecules present in the archaeal cell membrane are composed of: a) phosphate
head and fatty acids tail b) phosphate heads, attached to glycerol, attached to fatty acids c) phosphate
head, attached to archaeol d) phosphate heads, attached to glycerol, attached to cholesterol e) attached
to glycerol, attached to archaeol
24) The bond present in the membrane lipids in Archaea is called: a) ester bond b) peptide bond c)
peptidoglycan linkage d) phosphodiester bond e) ether bond
25) A small circular genetic material located in the bacterial cytoplasm but separate from the bacterial
chromosome is called: a) Euchromatin b) Nucleoid c) Hopanoid d) Plasmid e) Heterochromatin
26) If bacteria contain many flagella on 1 side of the bacteria than this flagellar arrangement is called: a)
monotrichous b) lophitricous c) amphitricous d) peritrichous e) veritricous
27) The bacterial ribosome is composed of two subunits called the: a) 30S and 50S subunits b) 70S and
80S subnits c) Gram +ve and Gram –Ve subunits d) Eubacterial and Cyanobacterial subunits e) none
of the above
28) Anti ribosomal antibiotics include all the following except: a) Lincosamines b) Tetracycline c)
Trimethoprim d) Chloramphenicol e) Erythromycin
29) If bacteria contain flagella at both ends of the bacteria than this flagellar arrangement is called: a)
Ditrichous b) lophitricous c) amphitricous d) peritrichous e) apitricous
30) Most animal viruses have extra envelope derived from the: a) environment b) host membrane c)
capsomeres d) viral capsules e) viral membranes
31) Viruses can’t be classified as living organisms because they lack: a) proteins b) genetic material c)
receptors d) enzymes e) cell membranes