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Biology 114 Exam 4; Questions & Answers 100% Verified
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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 ...

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  • August 9, 2024
  • 17
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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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.

, Biology 114 Exam 4; Questions & Answers
100% Verified

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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