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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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
Describe the experiment performed by FrederickGriffith showing the transformation of R cells (nonvirulent) into S cells (virulent) in a mouse model. Describe each control scenario and their significance.Then describe the experimental procedure (test scenario) and the final results and conclusion. Define any terms used and be specific and complete in your response.
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