BIOLOGY
BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 14, Problem 1S

a.

Summary Introduction

To predict:

The possible outcome of Griffith’s experiment using the heat-killed pathogenic and heat killed nonpathogenic bacteria.

Introduction:

The transformation of the genetic material in bacteria was experimentally found out by the person named F. G. He was trying to make the vaccine that could cure pneumonia, which is caused by the bacteria Streptococcus pneumonia. There exist two different strains of this bacterium. One of the forms of the bacteria is known as the S (smooth) form. This strain of the bacteria is virulent and forms smooth colonies in the culture. The other form is the mutant form or the R (rough) form. This strain was non-virulent and forms a rough colony in the culture.

b.

Summary Introduction

To determine:

The possible outcome of Griffith’s experiment using the heat-killed pathogenic and live nonpathogenic in the presence of an enzyme that digests proteins (protease).

Introduction:

The transformation of the genetic material in bacteria was experimentally found out by the person named F. G. He was trying to make the vaccine that could cure pneumonia, which is caused by the bacteria Streptococcus pneumonia. There exist two different strains of this bacterium. One of the forms of the bacteria is known as the S (smooth) form. This strain of the bacteria is virulent and forms smooth colonies in the culture. The other form is the mutant form or the R (rough) form. This strain was non-virulent and forms a rough colony in the culture.

c.

Summary Introduction

To determine:

The possible outcome of Griffith’s experiment using the heat-killed pathogenic and live nonpathogenic in the presence of an enzyme that digests DNA (endonuclease).

Introduction:

The transformation of the genetic material in bacteria was experimentally found out by the person named F. G. He was trying to make the vaccine that could cure pneumonia, which is caused by the bacteria Streptococcus pneumonia. There exist two different strains of this bacterium. One of the forms of the bacteria is known as the S (smooth) form. This strain of the bacteria is virulent and forms smooth colonies in the culture. The other form is the mutant form or the R (rough) form. This strain was non-virulent and forms a rough colony in the culture.

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Choose the false statement: Penicillin is a ß lactam which inhibits bacterial growth by inhibiting DNA polymerase. O Resistance to ß lactamase inhibitors arises when bacteria duplicate the ß lactamase gene. O B lactamase inhibitors are prescribed together with antibiotics like penicillin in order to combat resistance to these antibiotics. Question 10 Choose the false statement below: OUsing multiple antimicrobials in combination is an ineffective strategy because they generally are redundant in effect and the chance of drug resistance will be increased. O Because of its complex structure and multiple binding sites, the ribosome is the target for multiple types of antibiotics. O Choice of an antimicrobial agent may be dependent upon the material treated as well as the susceptíbility of the microbe.
Imagine this experimental modification of the Griffith and the Avery, McLeod and McCarty experiments: You heat kill smooth (S) and rough (R) strain Streptococcus pneumoniae. You make an extract from the S cells and treat it as described below, then combine the extract with heat killed R cells and inject this into mice. Which of the following statements would be true? select all correct
As shown , several medical agents are now commercially produced by genetically engineered microorganisms. Discuss the advantages and disadvantages of making these agents this way.

Chapter 14 Solutions

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