LEGIT 2023 MCB 205 TEST/ EXAMS QUESTIONS AS SEEN and
Remembered BY ILEMONA
1) ____ is referred to as active/ acquired immunity
Ans. Immunity gotten from exposure to a certain disease.
2) Alexander Fleming discovered Fungus penicillium sp as the
first antibiotic in the year
Ans- 1928
3) The PCR, polymerase chain Reaction was invented by
Ans- Kary Mullus
4)CRISPR-CAS9 enzyme was discovered to be used to edit
genome deliberately by
Ans- Jenifer Doudna and Emmanuelle carpenter
5) The golden era of MCB started from
Ans- 1860- 1910
6)_____ discovered that maggot did not spontaneously
generate from a meat broth
Ans- Francesco Redo
7)______ is an helical virus
Ans- Tobacco mosaic
8)The Virus gets into the cell through a process called
Ans- Endocytosis
9)Titre of virus is _____
Ans-PFA( plaque forming units)
10)_____ plays a role in in determining the infectivity of
bacteriophage by determining the number of virus in solution
Ans- plaque assay
11)Green Algae is made up of
Ans- Euglenophyta and Charophyta( Chlorophyta)
12)..... copy, type yours and paste let the trend continue.
13)….. the plague that reached Europe and killed 25 million
people in 5 years happened in what century?
Ans - 14th century
14)….. what determines the structure of the protein ?
Ans….. Protein coat
15) who elucidated the structure of DNA _____
Ans- watson, crick, Franklin and Wilkins
16) which of the following is not a feature of Koch's postulate
_____
Ans- the same type of organism CAN NOT be isolated from the
newly infected animal
17) An example of the single stranded positive RNA is___
Ans= Togaviruses
18)The stage of viral replication where it seems like nothing is
happening is___
Ans= Eclipse stage
19)___is the subunit of capsid
Ans= protomere
20)The golden age ended in___
Ans= World War 1
21)____ is when infected cells fuse with infected or uninfected
cells to form giant cells containing nuclei
Ans= syncytium formation
22) What is variolation
Ans- innoculation of fresh matter from a suffer of small pox
into a non immune individual
23)An example of the +ve sensed single stranded RNA is ____
Ans= Rheovirus
24) Classification of virus are the following( Host range,
morphology, Genome type) except
Ans=Organization
25)Who first coined "virus"
Ans= Martinus Beijerink
26)Erlish discovered a drug used to treat____
Ans=Syphilis
27) The 1st complete genome sequence was in
Ans= 1977
28) An example of negative sense single stranded RNA viruses is
A. Togaviruses
B. Adenoviruses
C. Hepadnaviruses
D. Orthomyxoviruses
29) Concentration of bacterial virus is represented as
A. Plaque Forming Titre
B. Colony Forming Titre
C. Plague Forming Unit
D. Colony Forming Unit
30) Plaque Assay is adapted to study
A. Plant Viruses
B. Tissue Culture
C. Bacteriophages
D. Animal Viruses
31) The following viruses can be inoculated in the allantoic
cavity of Embryonated Eggs Except
A. Human Immunodeficiency Virus
B. Mumps Virus
C. Newcastle Disease Virus
D. Influenza Virus
32) The following are inoculation sites in an egg except
I. Egg white II. Amniotic Cavity
III. Allantoic Cavity
IV. Yolk Sac V. Egg
A. I only
B. I and III
C. I and V
D. I, III and IV
33) The following are Koch's postulates except
I. A microrganism is associated with so many diseases
II. The pathogen from the pure culture must cause the disease
when inoculated into a healthy, susceptible laboratory animal
III. The pathogen can be isolated from the diseased host and
grown in pure culture
IV. The pathogen must be reisolated from the new host and
shown to be the same as the originally inoculated pathogen
A. I, II and IV
B. I and IV
C. I only
D. IV only
34) Plaque assay is adapted to study?
Ans: Bacteriophages
35) who was the first person to observe micro organisms in
nature
Ans: Antonio von leewanhoek
36)what is microbiology?
37) An example of the single stranded negative RNA is
Ans: orthomyxoviruses
38) Salvarsan 606 was discovered for
Ans: the treatment of syphilis
39) ____ reproduces sexually by producing an endogenous
form of sac-like structure which are produced in the ascocarp
Ans: ascomycetes
40). What is used to introduce a virus into a tissue or cell
culture
ans:. Hypodermic syringe
41). what marks the end of golden era
and:War world 1
42). the following can be used to examine the growth of Algae
except...
I. Hemocytometric
II. chromatography
III. macroscopy
IV. spectroscopy
ans. I,II and IV
43. the first complete genome sequence was in
ans:1977
44. which of this is not a characteristic of a virus
ans.. there's limit to their mode of attachment
45. which of this is not a characteristic of a virus
*ans* .. there's limit to their mode of attachment
46. Types of cytopathic cell changes
47. Koch's four postulates
48.stages of viral multiplication
49. Modes of viral inoculation
50. The drug Paul Erlich produced was used to treat ……
Ans: Syphilis
51. Which of these is a positively sensed single stranded RNA
virus
Ans: Togavirus
52. What did Chanpentier and Doudna invent in 2012
Ans: CRISPR CAS9 Enzyme
53. Method of viral cultivation that involves antigen-antibodies
Ans. Serological method
54. Who demonstrated in a series of elegant experiment that
the presence of living microbes and not air or other abiogenic
matter were responsible for microbial growth in a meat broth?
Ans: Louis Pasteur
55. Which of the following has a cellulose cell wall
A. Acrasiomycetes B. Oomycetes C. Amastigomycetes
56. Which of the following is a reproductive spore in Fungi
Ans: Oidium
Remember: It only takes God's grace to be better by far.
Good Luck.Compiled by ILEMONA, ( 300L Biochemistry)- Whatsapp08145935403