Campbell Biology: Custom Edition
Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Chapter 19, Problem 4TYU
Summary Introduction

Introduction: Bacteria are single-celled prokaryotic microorganisms. A bacteriophage is also called as bacterial virus that is formed when a virus infects a bacterium. T2 and T4 are enterobacteria phages that infect and kill E. coli. They are also known as T-even phages because they are double stranded. T-even phages are commonly used as model organisms for various genetic studies. The experiments performed by Hershey and Chase using bacteriophages already proved that DNA is the genetic material of inheritance.

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During the lytic replication cycle of the bacteriophage T4, the phage _________ remains outside the cell while the phage ________ enters the cell. A)  capsid protein… tail fibers B)  DNA… protein C)  envelope… DNA D)  enzymes… ribosome E)  protein… genetic material F)  RNA… capsid protein
Why is a webbed plate capable of producing a higher lysate titer (pfu/mL) than a cleared plate? a.) A webbed plate has plaques that have gone through more rounds of replication because the number of host cells did not limit phage replication, creating exponentially more phage particles b.) A webbed plate has no more host available for replication, meaning the plate is full of exponentially higher amounts of phage c.) A cleared plate has less bacteria than a webbed plate, so there are more plaques present d.) A cleared plate contains more phage than a webbed plate because it started with a more concentrated phage sample
The induced clones are developed by ________ into the host cell.a) Nuclear transfer b) Gene transfer c) Cell transfer d) Antigen transfer
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genetic recombination strategies of bacteria CONJUGATION, TRANSDUCTION AND TRANSFORMATION; Author: Scientist Cindy;https://www.youtube.com/watch?v=_Va8FZJEl9A;License: Standard youtube license