Viruses and Bacteria Review. VirusesBacteriaMore Challenging Virus Qs More Challenging Bacteria Qs 100 200 300 400 500.

Viruses and BacteriaReview

Viruses Bacteria More Challenging Virus

Qs

More Challengi

ng Bacteria

Qs

100 100 100 100

200 200 200 200

300 300 300 300

400 400 400 400

500 500 500 500

100

Which is smallest in size: a virus, a bacteria, a plant cell or an animal

cell?

Virus

200

The genome of a virus may be

A).single stranded DNAB).double stranded DNAC).single stranded RNAD).double stranded RNAE).All of the Above

E.

300Which of the following characteristics

is (are) found in all viruses?

A).a nuclear membraneB).a cell wallC).a capsidD).membrane-bound organellesE).ribosomes

C.

400Which of the following molecules

makes up the viral envelope?a). Carbopeptidesb). Proteosugarsc). Glycoproteinsd). Peptidocarbse). carboproteins

C

500Why are viruses referred to as obligate

parasites?A). They can incorporate nucleic acids from

other viruses.B).They cannot reproduce outside of a host cell.C).Viral DNA always inserts itself into a host

DNA.D).They invariably kill any cell they infect.E). E).They must use enzymes encoded by the

virus itself.

B.

100

What kingdom does bacteria fall under?

Monera

200

Cocci, Bacilli, and spirilla are what kind of shapes of bacteria?

Rod shaped, round, and helical.

300

What is the name of the carbohydrate that is found in bacteria cell walls

and helps us classify bacteria?

Peptidoglycan

400

By the color, you can classify some bacteria. What type of bacteria is shown in the picture below?

Gram Negative

500Penicillin is an antibiotic that inhibits

enzymes from catalyzing the synthesis of peptidoglycan, so which prokaryotes should be most vulnerable to inhibition by penicillin?

a) Mycoplasmasb) Gram positive bacteriac) Archaead) Gram negative bacteriae) Endospore bearing bacteria

B.

100What is the name given to viruses that

are single-stranded RNA that acts as a template for DNA synthesis?

A).retrovirusesB).provirusesC).viroidsD).bacteriophagesE).lytic phages

A.

200Which of the following destroys the host cell

during replication of viruses?A).reverse transcriptaseB).prophageC).lysogenic cycleD).lytic cycleE).viroids

D.

300Which of the following information

transfers is catalyzed by reverse transcriptase?

A).RNA RNAB).DNA RNAC).RNA DNAD).Protein DNAE).RNA Protein

C.

400Most human-infecting viruses are maintained in

the human population only. However, a zoonosis is a disease that is transmitted from other vertebrates to humans, at least sporadically, without requiring viral infection. Which of the following is the best example of a zoonosis?

A).herbes virusB).rabiesC).smallpoxD).HIVE).hepatitis virus

B.

500Put the steps of Viral Infection in order. A)TransriptionB) TranslationC) Incorporation of the virus into the cellD) New viruses exit cellE) Assembly of viral componentsF) Copying viral genome

C, F, A, B, E, D

100Not present in all bacteria, this structure

enables those that possess it to germinate after exposure to harsh conditions, such as boiling.

A). EndosporeB). Sex PilusC). FlagellumD). Cell wallE). Capsule

A.

200Which of the following statements about

prokaryotes is correct?A). Bacterial cells conjugate to mutually exchange

genetic material.B). Their genetic material is confined within a

nuclear envelope.C). They divide by binary fission, without mitosis or

meiosis.D). The persistence of bacteria throughout

evolutionary time is due to their genetic homogeneity.

E). Genetic variation in bacteria is not known to occur, nor should it occur, because of their asexual mode of reproduction.

C.

300

What are the three modes of motility for bacteria?

Flagella, Helical Filaments and Slime

400

What are two ways that bacteria can help us and the environment.

Clean oil spillsMake antibiotics

500For each numbered phrase or sentence, select the one heading

that is most closely related to it.

A) Conjugation B) Transduction

C) Transformation D) Plasmid

1) The transfer of genes between two E. coli joined by a sex pilus

2) A section of bacterial DNA is packaged in a virus and transferred to a new host cell

3) Small rings of bacterial DNA that carry accessory genes

4) A bacteria takes up segments of naked DNA

1. A 2. B 3. D 4. C