Biology 114 Exam 4; Questions & Answers
100% Verified
Virus Correct answer-is an infectious particle consisting of
genes packaged in a protein coat
Capsid Correct answer-protein shell that encloses a viral genome, may be rod-shaped,
polyhedral, or more complex shape
Viral Envelopes Correct ...
Biology 114 Exam 4; Questions & Answers
100% Verified
Virus Correct answer-is an infectious particle consisting of
genes packaged in a protein coat
Capsid Correct answer-protein shell that encloses a viral genome, may be rod-shaped,
polyhedral, or more complex shape
Viral Envelopes Correct answer-a membrane, derived from membranes of the host cell,
that cloaks the capsid, which in turn encloses a viral genome
Bacteriophages Correct answer-a virus that infects bacteria, also called a phage
Host Range Correct answer-the limited number of species whose cells can be infected by
a particular virus
Lytic Cycle Correct answer-a type of phage replicative cycle resulting in the release of a
new phages by lysis and the death of the host cell
Virulent Phage Correct answer-a phage that replicates only by lytic cycle.
Lysogenic Cycle Correct answer-a type of phage replicative cycle in which the viral
genome becomes incorporated into the bacterial host chromosome as a prophage, is replicated
along with the chromosome, and does not kill the host cell.
Temperate Phage Correct answer-a phage that is capable of replicating by either lytic or
lysogenic cycle
Prophage Correct answer-a phage genome that has been inserted into a specific site on a
bacterial chromosome
Restirction Enzyme Correct answer-An endonuclease (type of enzyme) that recognizes
and cuts DNA molecules foreign to a bacterium (such as a phage genomes), the enzyme cuts a
specific nucleotide sequences called restriction sites
Retrovirus Correct answer-an RNA virus that replicates by transcribing its RNA into DNA
and then inserting the DNA into cellular chromosomes
Reverse Transcriptase Correct answer-an enzyme encoded by certain viruses that uses
RNA as a template for DNA synthesis
Provirus Correct answer-a viral genome that is permanently inserted into a host genome
Vaccine Correct answer-a harmless variant of derivative of a pathogen that stimulates a
host's immune system to mount defenses against the pathogen
, Biology 114 Exam 4; Questions & Answers
100% Verified
Epidemic Correct answer-a widespread outbreak of a disease
Pandemic Correct answer-a global epidemic
Prion Correct answer-an infectious agent that is a misfolded version of a normal cellular
protein, appear to increase in number by converting correctly folded versions of the protein to
more prions
Viroids Correct answer-small circular RNA molecules that
infect plants and disrupt their growth
DNA Technology Correct answer-techniques for sequencing and manipulating DNA
Biotechnology Correct answer-the manipulation of organisms or their components to
produce useful products
Nucleic Acid Hybridization Correct answer-the base pairing of one strand of a nucleic acid
to the complementary sequence on a strand from another nucleic acid molecule.
Genetic Engineering Correct answer-the direct manipulation of genes for practical
purposes
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