Virus bacteriophage - Study guides, Revision notes & Summaries

Which of the following statements correctly answers how the large amount of genetic variation observed in prokaryotes arises? A) The mutation rate in prokaryotes is much higher than in eukaryotes. B) They have extremely short generation times and large populations. C) They can exchange DNA with many types of prokaryotes by way of horizontal gene transfer. D) They have a relatively small genome. - Answer-B and D The short generation times and large population sizes in most prokaryotic speci...

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 ...

All of the following statement about plants cells are true EXCEPT one. Which one is the EXCEPTION? A. Most of the cytoplasmic volume is occupied by a single vacuole B. Plant cell walls contain cellulose C. Plant cells possesses a cell wall but not a cell membrane D. Adjacent plant cells contain channels allowing for intercellular communication E. Plant cells have mitochondria - Answer-C - plant cells DO have a plasma membrane 2. Why are intracellular binding steroidal hormones slow...

True or False: Much research has been done on sRNAs (small noncoding RNA) and they have been extremely well-characterized for their function. FALSE TRUE/FALSE: A bacterium that can grow well on minimal medium is an example of a prototroph. TRUE Enzyme Acts as a catalyst for...to bring about a specific biochemical reaction Operon Clusters of genes and...under the control of a single promoter. Gratuitous inducer Activates genes but not be metabolized by the encoded enzymes Structural g...

Portage Learning BIOD 171 Microbiology Lecture Exam Key 1-6 Exams 1. What are the two major types of nucleic acids and their roles? DNA- deoxyribonucleic acid RNA- Ribonucleic acid DNA- Cellular life has DNA and a role that DNA has is long-term storage of information, it holds the characteristics of living organisms. RNA- Is the carrier of information in form of amino acid sequence. It converts the information in the DNA and synthesizes proteins Tru...

A particular animal virus requires the use of DNA polymerase from its host (since it does not possess its own DNA polymerase enzyme. Which of the following assumptions in A-D would likely be correct regarding this virus? A) This virus could not be a retrovirus B) It could be a (-) ss RNA virus C) It could be a (+) ss RNA virus D) The virus life cycle very likely includes going to the host cell nucleus E) All of A-D are correct assumptions correct answersD) The virus life cycle very likely...

3 transfers of DNA - Transformation: bacteria takes up naked DNA Transduction: a virus transfers the genes Conjugation: a hollow tube, or pilus transfers genes between organisms A population has 700 individuals, 85 of genotype AA, 320 of genotype Aa, and 295 of genotype aa. What are the allele frequencies of A (p) and a (q)? A. p = 0.58, q = 0.42 B. p = 0.35, q = 0.65 C. p = 0.65, q = 0.35 D. p = 0.50, q = 0.50 - Total number of alleles = 700 x 2 = 1400 p = ((85x2)+320)/1400 = 0.35 q ...

Which of the following statements correctly answers how the large amount of genetic variation observed in prokaryotes arises? A) The mutation rate in prokaryotes is much higher than in eukaryotes. B) They have extremely short generation times and large populations. C) They can exchange DNA with many types of prokaryotes by way of horizontal gene transfer. D) They have a relatively small genome. : B and D The short generation times and large population sizes in most prokaryotic species,...

Life in the Sea Exam 2 Questions & Answers 2024/2025 Bacteriophage - ANSWERSkind of virus that infects bacteria Zooxanthellae - ANSWERSo Important dinoflagellates that live in a symbiotic relationship with coral reefs o Many of these organisms have little or no growth with zooxanthellae Algae bloom/Red tide - ANSWERSDiatoms and dinoflagellates can go through periods of rapid growth known as blooms caused by high levels of nutrients in the water and can harm organisms Chemosyntheti...

TEST BANK for Fundamentals of Molecular Virology 2nd Edition by Acheson. Package Title: Testbank Course Title: Acheson 2nd edition Chapter Number: 01 Question type: Multiple Choice 1) Which of the following terms describes the protein shell that surrounds the viral genome? a) capsid b) envelope c) matrix d) virion e) capsomere Answer: a 2) Which of the following would not be a nucleic acid form found in a viral genome? a) dsDNA b) ssDNA c) dsRNA d) ssRNA e) an RNA:DN...