Capsid - Study guides, Class notes & Summaries

Virus - infectious particle consisting of genes packaged in a protein coat non-living obligate intracellular parasite A Virus is not living - True Viruses can't produce or carry out metabolism outside of a host cell - True Where do viruses reproduce? - In living cells Viruses=parasites - Obligate parasites - require a host cell for replication All living organisms have viruses: - prokaryotes and all varieties of eukaryotes Bacterial viruses - Bacteriophage; phages Viru...

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

Bio 114 Exam 4 (UA) Questions and Answers Already Passed What is referred to as the "switch" in a DNA segment? The "switch" is known as the operator, a DNA segment typically located within the promoter region. What role does a repressor play in gene regulation? A repressor is a protein that attaches to an operator and obstructs RNA polymerase from attaching to the promoter. What is a corepressor? A corepressor is a molecule that works in conjunction with a repressor protein ...

EXAM 1 BIOS 242- CHAMBERLAIN ALREADY PASSED DNA is replicated in the ___ nucleus RNA is replicated in the ___ cytoplasm what is the first step in viral replication? penetration/adhesion (attaches to membrane using spikes) what is the second step in viral replication? uncoating what is the third step in viral replication? replication what is the fourth step in viral replication? assembly what is the fifth step in viral replication? maturation what is the sixth step in viral replication? r...

True or False: Because the genome is contained within an enclosed space, (much like the nucleus of a cell) viruses are classified as eukaryotic CORRECT ANSWER False. Viruses are neither eukaryotic nor prokaryotic Describe the two basic components of a virus (short answer) CORRECT ANSWER A virus has 1. genomic material comprised of either DNA or RNA and 2. a capsid, a membrane-like protective structure that contains the genetic material, similar to the nucleus of a eukaryotic cell The _____...

BIO 390 Exam 2 Questions With 100% Correct Answers Virus - answerLatin for poison (Pasteur) Not living Not cellular Obligate intracellular parasite - answerPerform no metabolism Can not freely reproduce No protein synthesis Carry no or few enzymes Naked virus (non-enveloped virus) anatomy: - answerGenetic material (DNA or RNA) Capsid-protein coating (composed of capsomere proteins) Enveloped virus anatomy: - answerGenetic material (DNA or RNA) Capsid Envelope - phospholipid bilayer ...

BIO 390 Exam 2 Questions With 100% Correct Answers Virus - answerLatin for poison (Pasteur) Not living Not cellular Obligate intracellular parasite - answerPerform no metabolism Can not freely reproduce No protein synthesis Carry no or few enzymes Naked virus (non-enveloped virus) anatomy: - answerGenetic material (DNA or RNA) Capsid-protein coating (composed of capsomere proteins) Enveloped virus anatomy: - answerGenetic material (DNA or RNA) Capsid Envelope - phospholipid bilayer ...

Which of the following is a property of viruses that defines them as unique organism: a) Do not contain or code for proteins synthesis or energy-generating mechanisms b) Have a wall composed of LPS c) have an icosohedral capsid Correct Answer-a) Do not contain or code for proteins synthesis or energy-generating mechanisms T/F: Enveloped viruses are normally more resistant to dry conditions than non-enveloped viruses. Correct Answer-False (Non enveloped are more resistant)

Are Viruses Living or Nonliving? - They are only considered living when they are inside of a host cell, using their resources and energy. Outside of a host they are considered intert. When are Viruses considered to be "alive"? - When they are inside of a host cell. When inside, their nucleic acid (ONLY RNA OR DNA) become active. *Virus replicates Obligatory Intracellular Parasites - Require livinghost cell in order to multiply - Such as Viruses. Defining a Virus - ...

Virus - infectious particle consisting of genes packaged in a protein coat non-living obligate intracellular parasite A Virus is not living - True Viruses can't produce or carry out metabolism outside of a host cell - True Where do viruses reproduce? - In living cells Viruses=parasites - Obligate parasites - require a host cell for replication All living organisms have viruses: - prokaryotes and all varieties of eukaryotes Bacterial viruses - Bacteriophage; phages Virus Sizes - Small ...