EBK BIOLOGY
EBK BIOLOGY
11th Edition
ISBN: 8220102797352
Author: Raven
Publisher: YUZU
Question
Book Icon
Chapter 14, Problem 1U
Summary Introduction

To determine:

Results obtained from the Griffith’s experiments using live and heat killed pathogenic bacteria.

Introduction:

Transformation of DNA is the process by which DNA of the host cell or the infecting cell is changed by the incorporation n of an outside DNA that is of some other organism. This process was discovered by Frederick Griffith, when he was trying to make vaccine against influenza virus. He carried out his experiment in mouse.

Expert Solution & Answer
Check Mark

Answer to Problem 1U

Correct answer:

The key finding from the Griffith’s experiment using live and heat killed pathogenic bacteria was that “genetic material can be transferred from dead to live bacteria”. Therefore option d. is correct.

Explanation of Solution

Reason for the correct statement:

There are different basis of classification of bacteria. One such basis is the virulism of bacteria. On this basis there are two kinds of bacteria. They are normal virulent bacteria and mutant non-virulent bacteria. Griffith in his experiment injected these two forms of bacteria in mouse and observed the result in them. He injected live virulent bacteria into mice and he also injected non virulent and heat-killed virulent bacteria in different mice.

Option d. is given as “genetic material can be transferred from a dead to a live bacteria”.

As, “there can be transference of DNA from a non-living to a living bacterium”, is the correct answer.

Hence option d. is correct.

Reason for the incorrect statements:

Option a. is given as “bacteria with smooth coat killed mice”.

Key finding of the Griffith’s experiment was that genetic material can be transferred from a dead to a live bacteria and not that bacteria with smooth coat killed mice, so it is a wrong answer.

Option b. is given as “bacteria with rough coat are not lethal”.

The major finding of Griffith’s experiment was that genetic material can be transferred from a dead to a live bacteria and not that bacteria with rough coat are not lethal, so it is a wrong answer.

Option c. is given as “DNA is the genetic material”.

The major finding of Griffith’s experiment was that genetic material can be transferred from a dead to a live bacteria and not that DNA is the genetic material, so it is a wrong answer.

Hence options a., b. and c. are incorrect.

Conclusion

The major finding of Griffith’s experiment is that genetic material can be transferred from a dead to a live bacteria.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Which of the following is the process that is "capable of destroying all forms of microbial life"? Question 37 options: Surgical scrub Sterilization Chemical removal Mechanical removal
After you feel comfortable with your counting method and identifying cells in the various stages of mitosis, use the four images below of whitefish blastula to count the cells in each stage until you reach 100 total cells, recording your data below in Data Table 1. (You may not need to use all four images. Stop counting when you reach 100 total cells.) After totaling the cells in each stage, calculate the percent of cells in each stage. (Divide total of stage by overall total of 100 and then multiply by 100 to obtain percentage.)   Data Table 1Stage    Totals    PercentInterphase        Mitosis:        Prophase        Metaphase        Anaphase        Telophase        Cytokinesis        Totals    100    100% To find the length of time whitefish blastula cells spend in each stage, multiply the percent (recorded as a decimal, in other words take the percent number and divide by 100) by 24 hours. (Example: If percent is 20%, then Time in Hours = .2 * 24 = 4.8) Record your data in Data…
What are Clathrin coated vesicles and what is their function?
Knowledge Booster
Background pattern image
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Text book image
Comprehensive Medical Assisting: Administrative a...
Nursing
ISBN:9781305964792
Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa
Publisher:Cengage Learning
Text book image
Essentials of Pharmacology for Health Professions
Nursing
ISBN:9781305441620
Author:WOODROW
Publisher:Cengage
Text book image
Basic Clinical Laboratory Techniques 6E
Biology
ISBN:9781133893943
Author:ESTRIDGE
Publisher:Cengage
Text book image
Body Structures & Functions
Biology
ISBN:9781285695495
Author:Scott
Publisher:Cengage