Chapter 6 test 2

Which of the following properly list the steps of viral replication

Attachment-penetration-biosynthesis-maturation-lysis

Which of the following is the host-cell receptor that recognizes human immunodeficiency virus HIV?

CD4

Which of the following is the scientist responsible for first discovering viruses?

Dimitri Ivanovski

(-)ssRNA enveloped

HIV

Step one of HIV

HIV RNA and other viral proteins enter the cell

dsDNA envelope

Hepatovirus

The excision of the viral genome from the host chromosome is known as which of the following?

Induction

Which of the following in not a property of a virus?

It is an infectious cellular pathogen

STEP 5 HIV

NEW VIRUS PARTICLES ARE RELEASED

STEP 3 HIV

PROVIRUS APPEARS

(-)ssRNA is transcribed into(+) ssRNA using which of the following?

RNA polymerase encoded by the virus

(+)ssRNA enveloped

Reovirus

Arthropods typically serve as which mechanism of transmission for viruses?

biological vector

reverse transcriptase is used to generate which nucleic acid from RNA?

cDNA

The protein subunits that surround the nucleic acid of a virus are known as which of the following?

capsomeres

Hepesviridae

cold sores and or genital warts

How is kuru transmitted?

eating infected meat through cannibalism (eating "long pig")

viruses can be visualized using which method?

electron microscope

A zoonosis can only be transmitted from animals to humans.

false

Viruses are facultative intracellular pathogens.

false

any virus can infect any host cell

false

prion diseases cannot be transmitted from one generation to the next

false

the hemagglutinin assay can only identify infectious virus particles

false

there is a cure for transmissible spongiform encephalopathies

false

which method cannot be used to detect virus in patients serum

growth in pure culture

picornaviridae

hepatitis

(+_)SSRNA NAKED

herpes simplex virus

dsDNA naked

influenza virus

Hemmagglutinin

isolating antibodies from a patient, adding them to a virus, and seeing if the virus can clump erythrocytest

which effect does tomato plants macho viroids have on crops?

loss of chlorophyll

RT_PCR

making cDNA from RNA

which unit of length best describes the average size of a virus

nm

Papillomaviridae

penile and/or cervical cancer

which statement regarding the introduction of virus in eggs is true?

pox can form on the embryo

transmissible spongiform ecenphalopathies such as Creutzfeldt-Jakob disease are caused by which of the following?

prion

in the lysogenic cycle of bacteriophages, the integrated phage genome is known as which of the following?

prophage

although there are no current treatments for prion infections. which of the following could be used?

proteases

In retroviruses, the integrated phage genome is known as which of the following?

provirus

parvoviridae

respiratory tract infections

Which of the following is a novel enzyme found in retroviruses?

reverse transcriptase

the liquid portion off blood that does not contain clotting factors is known as which of the following?

serum

Chicken pox can reemerge as which disease?

shingles

poxviridae

skin lesions

which scientist first described prions

stanley prusiner

STEP 4 HIV

VIRAL DNA IS TRANSCRIBED INTO VIRAL RNA

You are a nurse and you suspect that you may have been exposed to a particular virus. You and your health care provider decide to perform a hemagglutinin assay. A sample of your serum is taken and added to a sample of virus. Next, the virus and serum sample are added to erythrocytes. Upon examination, you do not see any agglutination occurring. Which can you conclude from these results?

the test result suggests you may have been exposed to the virus and your serum contains the antibodies against the virus

the Baltimore classification system describes viruses according to which characteristic?

the viral genome

Which mechanism of horizontal gene transfer relies on the use of the viruses?

transduction

(+)ssRNA can be directly used in translation at the ribosome

true

RT-PCR relises on an enzyme encoded by retroviruses

true

most plant viruses do not kill their host

true

satellite RNA can encode for protein

true

EIA

using antibodies to detect viral antigens

PCR

using primers to amplify DNA

Step 2 HIV

viral DNA is synthesized

An acellular entity composed of a small circular RNA molecule without a capsid and capable of replicating its genome is known as which of the following?

viroid

An acellular entity composed of a small circular RNA molecule without a capsid and is not capable of replicating its genome is known as which of the following?

virusoid

a bacteriophage infects a host cell and the genome integrates itself into the host chromosome. sometime later, the phage is excised along with a short piece of DNA adjacent to the insertion point. Both the phage DNA and the host DNA are packaged into the same capsid. The bacteriophage then infects a new cell, delivering both phage and bacterial DNA. Which process is being described?

The lysoogenic cycle, reactivating as the lytic cycle, followed by specialized transduction

Which of the following viruses does not cause latent infections?

adenovirus