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Home⇒ Medical Science⇒ Microbiology⇒ Bacteria morphology
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q21 ⇒ Gram positive cells have a multiple layer of peptidoglycan that helps to retain the crystal violet stain [other wrong options] [Discuss in forum] second outer membrane that helps to retain the crystal violet stain thick capsule that traps the crystal violet stain periplasmic space that traps the crystal violet |
Q22 ⇒ Which of the following is exposed on the outer surface of a gram-negative bacterium? O-antigen of lipopolysaccharide (LPS) [other wrong options] [Discuss in forum] Polysaccharide portion of lipoteichoic acid (LTA) Braun lipoprotein Electron transport system components |
Q23 ⇒ Which of the following is analogous to mesosomes of bacteria? Mitochondria of eukaryotes [other wrong options] [Discuss in forum] Golgi apparatus of eukaryotes Lysosomes of eukaryotes None of these |
Q24 ⇒ Which of the following may contain fimbriae? Gram-negative bacteria [other wrong options] [Discuss in forum] Gram-positive bacteria Both (a) and (b) None of these |
Q25 ⇒ The last step in synthesis of peptidoglycan is attaching two amino acids to form a cross-link [other wrong options] [Discuss in forum] attachment of a peptide to muramic acid attachment of a portion of peptidoglycan to a membrane lipid binding of penicillin to a membrane protein |
Q26 ⇒ Which of the following has peptidoglycan as a major constituent of cell wall? Gram-positive bacteria [other wrong options] [Discuss in forum] Gram-negative bacteria Fungi None of these |
Q27 ⇒ The common word for bacteria which are straight rod in shape is bacilli [other wrong options] [Discuss in forum] cooci spirilla pleomorphic |
Q28 ⇒ Which of the following does not contain protein? Lipoteichoic acid [other wrong options] [Discuss in forum] Pili Flagellum Porin |
Q29 ⇒ Which of the following has Chinese letter arrangement? Corynebacterium diphtheriae [other wrong options] [Discuss in forum] Bacillus anthracis Mycobacterium tuberculosis Clostridium tetani |
Q30 ⇒ The protein from which hook and filaments of flagella are composed of, is flagellin [other wrong options] [Discuss in forum] keratin gelatin casein |
Q31 ⇒ A cluster of polar flagella is called lophotrichous [other wrong options] [Discuss in forum] amphitrichous monotrichous petritrichous |
Q32 ⇒ Genetic system is located in the prokaryotes in all of these [other wrong options] [Discuss in forum] nucleoid chromatin nuclear material |
Q33 ⇒ The cell wall of gram-positive bacteria are thicker than gram-negative bacteria [other wrong options] [Discuss in forum] gram-negative bacteria are thicker than gram-positive bacteria both have same thickness but composition is different none of these |
Q34 ⇒ The arrangement, in which flagella are distributed all round the bacterial cell, is known as peritrichous [other wrong options] [Discuss in forum] lophotrichous amphitrichous monotrichous |
Q35 ⇒ The next to last step in peptidoglycan biosynthesis is linking the sugar of the disaccharide-peptide unit to the growing peptidoglycan chain [other wrong options] [Discuss in forum] synthesis of the NAM-peptide subunit removal of the subunit from bactoprenol cross-linking the peptide side chains of peptidoglycan |
Q36 ⇒ Microcapsules are composed of all of these [other wrong options] [Discuss in forum] proteins polysaccharides lipids |
Q37 ⇒ Single or clusters of flagella at both poles is known as amphitrichous [other wrong options] [Discuss in forum] monotrichous petritrichous none of these |
Q38 ⇒ Porins are located in the outer membrane of gram-negative bacteria [other wrong options] [Discuss in forum] the peptidoglycan layer of gram-positive bacteria the cytoplasmic membrane of both gram-negative and gram-positive bacteria the periplasmic space of gram-negative bacteria |
Q39 ⇒ Which of the following organism has sterols in their cytoplasmic membrane? Mycoplasma [other wrong options] [Discuss in forum] Clostridum Proteus Bacillius |
Q40 ⇒ The location where the bacterial chromosome concentrates is called nucleoid [other wrong options] [Discuss in forum] nucleus nuclein nucleose |
Or |