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science - viruses -

chapter quiz

QuestionAnswer
What is a strand of nucleic acid encased in a protein coat that can infect cells and replicate within them? Virus
What is a protein sheath that surrounds the nucleic acid core in a virus? Capsid
What is the outer layer covering the capsid of many kinds of viruses? Envelope
This is a protein with carbohydrate molecules attached. Glycoprotein
This is a virus that infects bacteria. Bacteriophage
This is a disease causing agent. Pathogen
This is a cycle of viral infection; results in replication of virus and cell destruction. Lytic Cycle
This is the viral DNA which inserts into a host cell's chromosome. Provirus
This is a cycle in which a viral genome replicates as a provirus without destroying the host cell. Lysogenic Cycle
A virus that evolves in a geographically isolated area and is pathogenic to humans. Emerging Virus
Infectious particles composed of protein with no nucleic acid. Prion
In plants, infectious disease agent composed of a single strand of RNA with no capsid. Viroid
Viruses do not: a. grow b.have homeostasis c. metabolize d. all of the Above D
What evidence led Stanley to conclude that TMV is not a living organism? a. The extract of TMV crystalllized b. TMV is made of RNA and protein c. TMV reproduces only in cells d. The virus poisons tobacco plants. ?
The basic components of all viruses are a nucleic acid and a: a. endospore b. glycoprotein c. protein coat d. icosahedron C
HIV infects and destroys: a. skin cells b. red blood cells c. immune cells d. bacterial cells C
Unlike eukaryotes, bacteria: a. have flagella b. are smaller than viruses c. perform aerobic and anaerobic metabolism d. have a nucleus B?
E.Coli can move by use of its: a. pili b.nucleus c.peptidoglycan d.flagella D
Bacterial disease occurs when bacteria: a.secrete toxins b.conjugate c.are heterotrophic d.live on humans A
Bacteria are beneficial because they make: a.vinegar, sausages, and disease b.drugs, minerals, and peptidoglycan c. cytoplasm, antibiotics, and robosomes d. copper, acetone,and buttermilk ?
Created by: Laurelmom
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