Question 1

Col factor plasmid carries genetic information responsible for:
A) Antibiotic resistance
B) Sex pili
C) Bacteriocin
D) Toxin production

Accepted Answer

Col factor plasmids carry genes that encode for bacteriocins, which are proteins that can kill or inhibit the growth of other bacteria.

Question 2

Eukaryotes include:
A) Virus
B) Bacteria
C) Fungi
D) Human cell
E) Both C, D

Accepted Answer

Eukaryotes are organisms whose cells have a nucleus enclosed within a nuclear envelope. Both fungi and human cells are eukaryotic, whereas viruses and bacteria are not.

Question 3

It is true for bacteria that:
A) Have true nucleus
B) Flagella are responsible for adhesion
C) Capsule is associated with virulence
D) Have no cell wall

Accepted Answer

The capsule in bacteria is associated with virulence as it helps protect the bacteria from the host's immune system.

Question 4

Prokaryotic cells has no:
A) Ribosomes
B) Cell wall
C) Mesosomes
D) True nucleus

Accepted Answer

Prokaryotic cells lack a true nucleus; their genetic material is not enclosed within a nuclear membrane.

Question 5

Prokaryotes Includes:
A) Fungi
B) Human cell
C) Bacteria
D) Virus

Accepted Answer

Prokaryotes are unicellular organisms that lack a nucleus, and bacteria are a type of prokaryote.

Question 6

Bacterial cell multiplies by:
A) Binary fission
B) Budding
C) Sexual multiplication
D) Mitosis

Accepted Answer

Bacterial cells primarily multiply through binary fission, a process where a single cell divides into two identical daughter cells.

Question 7

Bacterial cell do not contain:
A) Cell wall
B) Mitochondria
C) 70 s ribosomes
D) Mesosomes

Accepted Answer

Mitochondria are not found in bacterial cells.

Question 8

Lipid A is a cell wall component of :
A) Gram positive bacteria
B) Gram negative bacteria
C) Fungi
D) Virus

Accepted Answer

Lipid A is a component of the lipopolysaccharides (LPS) found in the outer membrane of Gram-negative bacteria.

Question 9

Sites of protein synthesis In bacteria Is:
A) Ribosomes
B) Mesosomes
C) Inclusion granules
D) Chromosome

Accepted Answer

Ribosomes are the sites of protein synthesis in bacteria, as they are responsible for translating mRNA into proteins.

Question 10

Which of the following is true regarding flagellum:
A) Short, rigid structure
B) L.PS in nature
C) Protein in nature
D) Helps in bacterial adherence to host cells

Accepted Answer

Flagella are proteinaceous structures that help in the motility of bacteria. They are not short or rigid, and they do not primarily aid in adherence to host cells.

Question 11

Bacteria with flagella around the cell is:
A) Monotrichate
B) Lophotrichate
C) Peritrichate
D) Amnhitrichate

Accepted Answer

Peritrichate bacteria have flagella distributed all around the cell surface.

Question 12

Bacterium with flagellum at each end:
A) Monotrichate
B) Lophotrichate
C) Peritrichate
D) Amphitrichate

Accepted Answer

Amphitrichate bacteria have a single flagellum at each end of the cell.

Question 13

Sex pili formation is function of :
A) Ribosome
B) Chromosome
C) F plasmid
D) Cell wall

Accepted Answer

Sex pili formation is a function of the F plasmid, which carries the genes necessary for the production of pili used in bacterial conjugation.

Question 14

Plasmids are :
A) Cytoplasmic storage granules
B) RNA molecules
C) Chromosomal DNA
D) Carry genetic material essential for bacterial life
E) Dispensible

Accepted Answer

Plasmids are extrachromosomal DNA molecules that are not essential for the basic survival of bacteria, making them dispensable.

Question 15

When one flagellum is present at both ends of bacterial cell the arrangement is known as
A)Monotrichous
B)Peritrichous
C)Amphitrichous
D)Non of these

Accepted Answer

Amphitrichous refers to the arrangement where a single flagellum is present at both ends of a bacterial cell.

Question 16

Lophotrichous:
A) One flagellum at both ends
B) Tuft of flagella
C) Flagella all around the cell
D) Non of these

Accepted Answer

Lophotrichous refers to bacteria having a tuft of flagella at one or both ends of the cell.

Question 17

Fimbria are absent in
A) Gram negative
B) Gram positive
C) Both
D) Non of these

Accepted Answer

Fimbriae are more commonly found in Gram-negative bacteria, while Gram-positive bacteria typically lack fimbriae.

Question 18

Which of the following type of ribosomes are present in bacteria
A) 805
B) 705
C) Both

Accepted Answer

Bacteria have 70S ribosomes, which are smaller than the 80S ribosomes found in eukaryotic cells.

Question 19

Which of the following bacterial cell possess metachromatic granules
A) Corynebacterium
B) Clostridium
C) Mycobacterium
D) All of these

Accepted Answer

Corynebacterium species, such as Corynebacterium diphtheriae, are known to possess metachromatic granules, which are storage forms of inorganic polyphosphate.

Question 20

Number of chromosome in bacterium
A) One
B) Two
C) Five
D) Non of these

Accepted Answer

Most bacteria have a single circular chromosome.

Quiz 1: Pathogenesis-Antibiotic-Structure

Col factor plasmid carries genetic information responsible for:

Eukaryotes include:

It is true for bacteria that:

Prokaryotic cells has no:

Prokaryotes Includes:

Bacterial cell multiplies by:

Bacterial cell do not contain:

Lipid A is a cell wall component of :

Sites of protein synthesis In bacteria Is:

Which of the following is true regarding flagellum:

Bacteria with flagella around the cell is:

Bacterium with flagellum at each end:

Sex pili formation is function of :

Plasmids are :

When one flagellum is present at both ends of bacterial cell the arrangement is known as

Lophotrichous:

Fimbria are absent in

Which of the following type of ribosomes are present in bacteria

Which of the following bacterial cell possess metachromatic granules

Number of chromosome in bacterium