Question is ⇒ Porins are located in, Options are ⇒ (A) the outer membrane of gram-negative bacteria, (B) the peptidoglycan layer of gram-positive bacteria, (C) the cytoplasmic membrane of both gram-negative and gram-positive bacteria, (D) the periplasmic space of gram-negative bacteria, (E) , Leave your comments or Download question paper.

Question is ⇒ Porins are located in, Options are ⇒ (A) the outer membrane of gram-negative bacteria, (B) the peptidoglycan layer of gram-positive bacteria, (C) the cytoplasmic membrane of both gram-negative and gram-positive bacteria, (D) the periplasmic space of gram-negative bacteria, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Porins are located in
A.	the outer membrane of gram-negative bacteria [Correct Answer]
B.	the peptidoglycan layer of gram-positive bacteria [Wrong Answer]
C.	the cytoplasmic membrane of both gram-negative and gram-positive bacteria [Wrong Answer]
D.	the periplasmic space of gram-negative bacteria [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ The cocci which forms a chain is
Streptococci
diplococci
Staphylococci
Tetracocci

⇒ Which of the following structure(s) is /are external to cell wall?
Flagella
Stalks
Sheath
All of these

⇒ The protein from which hook and filaments of flagella are composed of, is
keratin
flagellin
gelatin
casein

⇒ Which of the following is analogous to mesosomes of bacteria?
Mitochondria of eukaryotes
Golgi apparatus of eukaryotes
Lysosomes of eukaryotes
None of these

⇒ The common word for bacteria which are spherical in shape is
cocci
bacilli
spirilla
pleomorphic

⇒ Chemically the capsule may be
polypeptide
polysaccharide
either (a) or (b)
none of these

⇒ The cell wall of
gram-positive bacteria are thicker than gram-negative bacteria
gram-negative bacteria are thicker than gram-positive bacteria
both have same thickness but composition is different
none of these

⇒ Name the component of flagellum.
Filament
Hook
Basal body
All of these

⇒ Microcapsules are composed of
proteins
polysaccharides
lipids
all of these

⇒ Which of the following organism has sterols in their cytoplasmic membrane?
Clostridum
Proteus
Mycoplasma
Bacillius

⇒ Which of the following does not contain protein?
Pili
Flagellum
Lipoteichoic acid
Porin

⇒ Which of the following is true about cell wall of gram-positive bacteria?
It consists of multiple layers
It is thicker than that associated with gram-negative bacteria
It contains teichoic acids
All of these

⇒ A cluster of polar flagella is called
lophotrichous
amphitrichous
monotrichous
petritrichous

⇒ Which of the following may be most likely to be missing from a gram-positive bacterium?
Penicillin binding protein
Peptidoglycan
Lipopolysaccharide
Phospholipid bilayer membrane

⇒ The other name for peptidoglycan is
mucopeptide
murein
both (a) & (b)
none of these

⇒ Which of the following is exposed on the outer surface of a gram-negative bacterium?
O-antigen of lipopolysaccharide (LPS)
Polysaccharide portion of lipoteichoic acid (LTA)
Braun lipoprotein
Electron transport system components

⇒ In which of the following, lipo-polysaccharide is a major constituent of outer membrane of the cellwall?
Gram-positive bacteria
Gram-negative bacteria
Fungi
None of these

⇒ The cooci which mostly occur in single or pairs are
Streptococci
Diplococci
Tetracocci
None of these

⇒ The bacteria deficient in cell wall is
Treponema
Mycoplasma
Staphylococcus
Klebsiella

⇒ The arrangement, in which flagella are distributed all round the bacterial cell, is known as
lophotrichous
amphitrichous
peritrichous
monotrichous

⇒ Periplasm is
the area between the inner and outer membranes of gram-negative bacteria
the area between the inner and outer membranes of Gram-positive bacteria
the interior portion of mitochondria
the area outside the cell membrane that is influenced by the polymers

⇒ Cytoplasmic inclusions include
ribosomes
mesosomes
fat globules
all of these

⇒ The location where the bacterial chromosome concentrates is called
nucleus
nuclein
nucleoid
nucleose

⇒ Cyanobacteria have
a gram-positive cell wall
a gram-negative cell wall
Neither (a) nor (b)
No cell wall

⇒ Single or clusters of flagella at both poles is known as
monotrichous
petritrichous
amphitrichous
none of these

⇒ Chemotaxis is a phenomenon of
swimming away of bacteria
swimming towards a bacteria
swimming away or towards of bacteria in presence of chemical compound
none of the above

⇒ Which is most likely to be exposed on the surface of a gram-negative bacterium?
Pore protein (porin)
Protein involved in energy generation
Lipoteichoic acid
Phospholipids

⇒ Gram positive cells have a
second outer membrane that helps to retain the crystal violet stain
multiple layer of peptidoglycan that helps to retain the crystal violet stain
thick capsule that traps the crystal violet stain
periplasmic space that traps the crystal violet

⇒ Which of the following has peptidoglycan as a major constituent of cell wall?
Gram-negative bacteria
Gram-positive bacteria
Fungi
None of these

⇒ The structure responsible for motility of bacteria is
pilli
flagella
sheath
capsules