Viral Terminology and Concepts, Quizzes of Biology

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Interferon is a group of ____ produced by host cells to inhibit virual multiplication. Proteins. TERM 2 The chancre is a painless circular, purplish ulcer associated with ____ ____. DEFINITION 2 Primary syphilis. TERM 3 T/F?: When an animal virus replicates, the whole virus enters the cell. DEFINITION 3 True. TERM 4 Rabies virus has an affinity for ___ cells. DEFINITION 4 Nerve. TERM 5 A prophage brings up some new properties to the ____ ____ ____. DEFINITION 5 Host bacterial cell.

Viruses are responsible for __% of human cancers. 20% TERM 7 T/F?: Herpes simplex virus exhibits icosahedral symmetry. DEFINITION 7 True. TERM 8 The host specificity of viruses is governed by the structure of their ___. DEFINITION 8 Capsid. TERM 9 T/F?: Smallpox is a DNA virus. DEFINITION 9 True. TERM 10 The association of Adenovirus with obesity was observed when chickens were suffering from: DEFINITION 10 Colds.

Rhinovirus infection often causes: The common cold. TERM 12 The bacteriophage is a type of virus that replicated within ____. DEFINITION 12 Bacteria. TERM 13 What was the possible cause of a large # of deaths of young adults in cases of current swine flu? DEFINITION 13 Cytokine storm overwhelming lung functioning. TERM 14 The discovery of prions brought Nobel Prize in medicine and physiology (1997) to: DEFINITION 14 S. Prusiner. TERM 15 The incubation period of Treponema pallidum is many weeks because it's generation time is about __ ____. DEFINITION 15 30 Hours.

The symmetry of viruses depends on the property of ____ ____. Capsid lipids. TERM 17 Halogen compounds, heavy metal compounds, and phenol derivatives inactivate viruses by: DEFINITION 17 changing the protein structure of the capsid. TERM 18 T/F?: Chlamydia completes its life cycle through initial body to elementary bodies to full organisms. DEFINITION 18 True. TERM 19 Deafness, impaired vision, and notches peg shaped teeth are a result of: DEFINITION 19 Congenital syphilis. TERM 20 Washing of newborn's eyes with silver nitrate solution is a preventative measure against eye blindness associate with ____ ____. DEFINITION 20 Gonococcal opthalmia.

T/F?: An essential feature in animal virus replication is viral genomes must uncoat in the cell cytoplasm. True. TERM 22 Chlamydia trachomatis causes ____ ____. DEFINITION 22 Nongonococcal urethritis. TERM 23 Recent years have witnessed the appearance of gonorrhea attributed to _____-_____ _____. DEFINITION 23 Penicillin-resistant diplococci. TERM 24 Because viruses have neither a cell wall, nor metabolism, they are not susceptible to ____. DEFINITION 24 Antibiotics. TERM 25 T/F?: The nucleocapsid of a virus is the genome plus the capsid. DEFINITION 25 True.

Spanish flu or Avian flu was associated with: Antigenic shift and pandemic outbreak. TERM 27 T/F?: Inactivated viruses used in vaccines can replicate in the body. DEFINITION 27 False. TERM 28 What does maturation in the replication cycle of a virus refer to? DEFINITION 28 Assembly of viral protein capsid and genetic material. TERM 29 T/F?: Prions were identified in association with brain disorders. DEFINITION 29 True. TERM 30 T/F?: Not all viruses possess a genome and a capsid. DEFINITION 30 False.

T/F?: A virion is a fully assembled infectious virus outside the host cell. True. TERM 32 Keratitis is a condition of the human eye caused by: DEFINITION 32 Neisseria gonorrhoea. TERM 33 Base analogs are antiviral drugs that are erroneously incorporated with ___ ___. DEFINITION 33 Viral DNA. TERM 34 How are viral envelopes usually acquired? DEFINITION 34 Budding through a membrane of the host cell. TERM 35 Latency in a viral disease(asymptomatic conditions) may be associated with a ____. DEFINITION 35 Provirus.

The type of organisms a virus can infect relates to the __ __ of the virus. Host Range. TERM 37 The drug that interrupts the viral replication cycle by reacting with the attachment of the host cells to the influenzae virus is ____. DEFINITION 37 Amantadine. TERM 38 A significant link between obesity and the ___- virus has been discovered recently. DEFINITION 38 Adenovirus TERM 39 T/F?: The adenovirus can be used as a vector in carrying or ferrying genes in gene therapy. DEFINITION 39 True. TERM 40 What is the viral envelope made up of? DEFINITION 40 A layer of protein sandwiches by two layers of lipid.

Ureaplasma may be associate with: urino- genital system. TERM 42 T/F?: Treponema pallidum is an example of a spiral rod. DEFINITION 42 True. TERM 43 T/F?: The influenza virus can be transmitted through food. DEFINITION 43 False. TERM 44 What are gummas? DEFINITION 44 The progressive lesions associated with tertiary syphilis. TERM 45 What does a virus with icosahedral symmetry resemble? DEFINITION 45 A polyhedron with 20 triangular faces and 12 corners.