Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

biology > ACELLULAR LIFE > Flashcards

ACELLULAR LIFE Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

which of the following is odd among rest?

(a) virulent phase
(b) master slave relationship
(c) lytic cycle
(d) prophage

A

(d) prophage

(produce in lysogenic cycle)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

when viral DNA is injected to viral cell then

(a) it may join bacterial DNA
(b) it may digest bacterial DNA
(c) bacteria may destroy it
(d) all of the above

A

all of the above

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

small pox is caused by

(a) ds DNA virus
(b) ss DNA virus
(c) ds RNA virus
(d) ss RNA virus

A

(a) dsDNA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

which of the following is RNA non envelope and transmitted by orofecal route ?

(a) HAV
(b) HEV
(c) polio virus
(d) all

A

ALL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

which of the following is an exception to cell theory?

(a) virus
(b) porifera
(c) bacteria
(d) protozoa

A

virus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

which of the following was used by hershey and chase to prove that DNA is the chemical basis of heredity?

(a) lambda phage
(b) coliphage
(c) T2 bacteriophage
(d) T4 bacteriophage

A

c) T2 bacteriophage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

in which of the following characteristics, viruses resembles living organisms

(a) lack of cytoplasm
(b) lack of respiration
(c) occurrence of mutation
(d) occurrence of metabolic reaction

A

c) occurrence of mutation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

the non living characteristic of virus is

(a) ability to multiply inside the host
(b) ability to undergo mutation
(c) ability to be crystallized
(d) ability to cause diseases in the host

A

c) ability to be crystallized

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

viruses cannot reproduce on its own because

(a) it has underdeveloped sex organs
(b) it cannot reproduce at all
(c) it lacks the cellular machinery to use its genetic materials
(d) all of these

A

c) lacks cellular machinery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The First evidence about the existence of viruses were provided by

(A) Louis Pasteur
(B) Ivanowsky
(C) W.M Stanley
(D) Charles Chamberland

A

Charles Chamberland

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

This virus, for the first time, was synthesized in the form of non-living crystals

a) Pox virus
b) Rabies virus
c) Tobacco mosaic virus
d) Bacteriophage

A

TMV (WM Stanley)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which of the following is the genome of the virus?

DNA
RNA
DNA or RNA
DNA and RNA

A

DNA or RNA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which of the following statements are true about the capsomeres?

It is an individual unit of the capsid

It is a viral protein for replication

It is a unit of nucleic acid in viruses

All of the above

A

individual unit of the capsid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which of the following has a complex symmetry?

T4 phage

Adenovirus

Influenza virus

HIV

A

T4 phage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The T2 phage is called_______.

ss DNA phage

ss RNA phage

ds DNA phage

ds RNA phage

A

ds DNA phage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The process in which DNA of bacterial cell is transferred into another cell by a virus in known as

Transduction

Conjugation

Transformation

Reproduction

A

Transduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Which of the following virus cause cancer in animals?

(A) Picornavirus
(B) MERS Virus
(C) SARS Virus
(D) Rous Sarcoma

A

ROUS SARCOMA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

It is an ancient disease that is known to have occurred as epidemic in China as early as the twelfth century B.C:

(A)Influenza

(B)Measles

(C)Herpes simplex

(D)Small pox

A

Small Pox

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Most commonly this disease occurs in the mouth. On the lips and other skin sites:

(A) Herpes simplex

(B)Measles and mumps

(C) Influenza

(D)Polio

A

Herpes Simplex (TYPE )
oral herpes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

An antiviral drug specifically modifies viral receptors on a eukaryotic host cell. How might this affect the viral reproductive cycle?

(A) It would facilitate the process of viral endocytosis

(B) It would result in the degeneration of the viral capsid

(C)It would enhance the process of viral apoptosis

(D) It would prevent the virus from attaching to the host cell

A

prevent the virus from attaching to the host cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

The protein spikes present on the viral envelope are important for:

Viral replication

Attachment to host cells

Protection of the viral genome

Activation of the host immune response

A

Attachment to host cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Viruses having polyhedral capsid with glycoprotein spikes at each vertex.

(A) Adenovirus
(B) Bacteriophage
(C) Influenza virus
(D) TMV

A

Adenovirus

23
Q

It is caused by enveloped RNA virus:

(A) Herpes Simplex
(B) Small pox
(C) Polio
(D) Influenza

A

Influenza

24
Q

Which of the following type of Hepatitis is caused by Viroid?

Hepatitis A
Hepatitis B
Hepatitis D
Hepatitis E

A

Hep D

25
Q

Which of following is false?

Most plant viruses are RNA Viruses

Most Animal viruses are DNA Viruses

TMV had double stranded RNA molecule

T4 bacteriophage has double stranded DNA molecule

A

TMV had double stranded RNA molecule

26
Q

Which of following is formed in host cell in response to viral infection?

Immunoglobulin
Antitoxins
Interferons
lipoproteins

A

Interferons

27
Q

The term “lytic cycle” is associated with:

Viral replication without killing the host cell

Integration of viral DNA into the host genome

Release of viral progeny by cell lysis

Activation of dormant viruses

A

Release of viral progeny by cell lysis

28
Q

It is highly contagious, widespread and seldom fatal:

(A) Herpes simplex
(B) Small pox
(C) Measles
(D) Mumps

A

Mumps

29
Q

These are the smallest known viruses:

(A) Herpes viruses
(B) Polio viruses
(C) Influenza viruses
(D) Paramyxoviruses

A

Polio viruses

30
Q

AIDS was reported by some physicians in early 1980’s in:

(A) Young heterosexual females
(B) Young heterosexual males
(C) Young homosexual males
(D) Young homosexual females

A

Young homosexual males

31
Q

Cells in _____ can also be infected by HIV:

(A) Central Nervous system
(B) Peripheral Nervous system
(C) Muscular system
(D) Endocrine system

A

Central Nervous system

32
Q

It is an inflammation of liver:

(A) AIDS
(B) Hepatitis
(C) Herpes simplex
(D) Polio

A

Hepatitis

33
Q

It is transmitted through the feces of infected individuals persons:

(A) Hepatitis A
(B) Hepatitis B
(C) Hepatitis E
(D) Hepatitis A and E

A

Hepatitis A and E

34
Q

It is a mild, short term and less virulent disease:

(A) Hepatitis A
(B) Hepatitis B
(C) Hepatitis C
(D) Serum hepatitis

A

Hepatitis A

35
Q

When viral DNA have been incorporated into the bacteria chromosome it is called as:

(A) Phage
(B) Prophage
(C) Provirus
(D) Viroid

A

Prophage

36
Q

Sometimes, the viral DNA gets detached from host’s chromosome and lytic cycle starts. This process is called:

(A) Incorporation
(B) Induction
(C) Synthesis
(D) Assembling

A

Induction

37
Q

The major cell infected by HIV is:

(A) B-lymphocyte
(B) T-lymphocyte
(C) Helper T Lymphocyte
(D) Suppressor T lymphocyte

A

Helper T Lymphocyte

38
Q

Tobacco mosaic virus was crystallized by:

(A) Stanley
(B) Ivanowski
(C) Pasteur
(D) Chamber land

A

Stanley

39
Q

Which structure help viruses to recognize host cell:

(A) Envelope
(B) Capsomeres
(C) Glycoprotein spikes
(D) Genome

A

Glycoprotein spikes

GP120

40
Q

Which of following is a living feature of virus:

(A) can be crystallized
(B) Acellular
(C) Destroyed by UV rays
(D) No metabolic machinery

A

Destroyed by UV rays

41
Q

Of the following which one is Retrovirus?

(A) HIV
(B) Mumps
(C) Influenza
(D) Herpes

A

HIV

42
Q

Which of the following can be found in all viruses?

(A) RNA
(B) Single stranded DNA
(C) Protein
(D) All of these

A

Protein

43
Q

Which of following strand of virus serve as mRNA:

(A) ssDNA
(B) +ssRNA
(C) dsDNA
(D) -ssRNA

A

+ssRNA

(-ve acts as a template)

44
Q

Which of the following is a symptom of AIDS?

(A) Swollen lymph nodes
(B) weight loss
(C) Pneumonia
(D) All of these

A

All of these

45
Q

Which of the following cells does HIV specifically target and infect?

Red blood cells
Neurons
T lymphocytes (CD4+ T cells)
Platelets

A

T lymphocytes (CD4+ T cells)

46
Q

The nucleic acid of bacteriophages is mostly:

(A) Single stranded RNA
(B) Double stranded DNA
(C) Double stranded RNA
(D) Single stranded DNA

A

ds DNA

47
Q

Which of the following structure of HIV is critical for cell fusion process:

(A) Matrix protein
(B) gp41
(C) gp120
(D) all are correct

A

GP41

48
Q

Which viral enzyme is responsible for the integration of the viral genome into the host cell’s DNA?

Reverse transcriptase
Protease
Integrase
Polymerase

A

Integrase

49
Q

Which type of HIV test detects the presence of antibodies produced in response to HIV infection?

ELISA
Western blot
PCR (Polymerase Chain Reaction)
CD4 cell count

A

ELISA

50
Q

The stage of HIV infection characterized by persistent generalized lymphadenopathy (swollen lymph nodes) is known as:

Asymptomatic HIV infection
Acute HIV infection
AIDS-related complex (ARC)
Full blown AIDS

A

ARC

51
Q

Which of the following is the final stage of HIV infection?

Asymptomatic HIV infection
Acute HIV infection
AIDS-related complex (ARC)
Full blown AIDS

A

Full blown AIDS

52
Q

Once bound to the cell surface, the virus must enter:

(A) The genetic material into the cell
(C) The capsid into the host cell
(B) The envelope into the host cell
(D) All of these

A

The genetic material into the cell

53
Q

Reverse transcription, carried out by retroviruses, is the process by which:

(A) RNA is duplicated
(B) DNA is duplicated
(C) RNA information is copied into DNA
(D) DNA information is copied into RNA

A

RNA info is copied to DNA

54
Q

RNA particles causing symptoms like that of viral diseases are known as.

(A) Viral
(B) Viroid
(C) Mycoplasma
(D) Virion

A

Viriod

biology (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions