Virus bacteriophage - Study guides, Revision notes & Summaries

StraighterLine BIO250 - Microbiology Final Exam Study Guide with Complete Solutions What is a Transforming Infection? - Correct Answers Virus that alters cell DNA, leading to cancer What is a lysogenic infection? - Correct Answers Phage DNA is incorporated into host genome and is passed on to subsequent generations What is a Lytic Bacteriophage Infection? - Correct Answers Host cell gets so packed with viruses that is lyses (splits) open and releases mature virions What are the three p...

Portage Microbiology Exam #6 Questions and Answers Already Passed True or False: Because the genome is contained within an enclosed space, (much like the nucleus of a cell) viruses are classified as eukaryotic False. Viruses are neither eukaryotic nor prokaryotic Describe the two basic components of a virus (short 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 nucleu...

What is a Transforming Infection? - Virus that alters cell DNA, leading to cancer What is a lysogenic infection? - Phage DNA is incorporated into host genome and is passed on to subsequent generations What is a Lytic Bacteriophage Infection? - Host cell gets so packed with viruses that is lyses (splits) open and releases mature virions

The growth of viruses in a culture is described as a one- step curve, because - Answer virion numbers show no increase during intracellular replication and can only be counted after the virions burst from the host cell A virus that kills its host is said to be - Answer lytic Bacteriophage have a ______ complex structure than animal viruses, because ______. - Answer More/ the bacteriophage must penetrate the peptidoglycan cell wall

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 ...

STRAIGHTERLINE MICROBIOLOGY 2024/2025 EXAM QUESTIONS WITH 100% VERIFIED CORRECT ANSWERS RATED A+ Cell walls are not typically possessed by ______. - Correct Answers protozoa The two major groups of helminths are the ______ and the ______. - Correct Answers roundworms; flatworms Which of the following is not true of conjugation? a. Involves direct contact between cells b. Transfers genes for drug resistance c. Transfers genes for enzymes and adherence molecules d. Involves the action o...

BIO 100 Practice Questions with Verified Solutions **What does the mass number represent?** It represents the total number of protons and neutrons in an isotope. **Where does the mitotic spindle attach to chromosomes?** It attaches at the centromere. **What type of solution is ideal for plant cells?** Hypotonic solution. **What makes up a nucleotide?** A nucleotide consists of a 5-carbon sugar, a phosphate group, and a nitrogenous base. **How many ATP molecules are prod...

Inquizitive Exam 1 UPDATED ACTUAL Questions and CORRECT Answers A bacterium takes in DNA from a bacteriophage (bacterial virus) and then incorporates that DNA into its genome. What process is this? - CORRECT ANSWER- Transduction Which of the following oxygen classifications contain organisms incapable of causing disease in humans? - CORRECT ANSWER- All classifications contain some organisms capable of causing disease.

MCPHS MICROBIOLOGY EXAM 3 QUESTIONS AND ANSWERS WITH COMPLETE VERIFIED SOLUTIONS VERIFIED What do viruses do outside of host cell? viruses are dormant outside their host cell until attachment happens. Chance collision results in attachment. Then enzymes react with the cell surface that causes the nucleic acid to be squirted into the cell; physical injection. Then within seconds, the host cell is dead. Because the enzymes quickly break host genome. What are viruses non-cellular, obligate, int...

Which of the following build(s) new strands of DNA? - ANSWER DNA polymerases Which statement about DNA replication is CORRECT? - ANSWER The leading strand is built continuously, and the lagging strand is built in pieces. The molecule that seals the gaps between the pieces of DNA in the lagging strand is - ANSWER DNA ligase. Which of the following events occurs during transcription? - ANSWER A molecule of RNA is formed based on the sequence of nucleotides in DNA. mRNA? - ANSWER mRNA m...