Microbiology Fundamentals: A Clinical Approach
3rd Edition
ISBN: 9781259709227
Author: Marjorie Kelly Cowan Professor, Heidi Smith
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 12, Problem 1Q
A microorganism carries _____ markers and a B cell carries _____ markers.
- a. self, nonself
- b. nonself, self
- c. self, self
- d. nonself, nonself
Expert Solution & Answer
Summary Introduction
Introduction:
The immune system evaluates cells by examining a few molecules on their surfaces termed as markers. These markers, which consist of proteins or sugars, allow the cells of the immune system to identify whether the newly discovered cell poses a threat.
Answer to Problem 1Q
Correct answer:
A microorganism carries non-self markers and a B cell carries self-markers. Therefore, option (b) is correct.
Option (b) is given as “nonself, self”.
Explanation of Solution
Justify the reasons for the correct statement:
A microorganism or any foreign particle carries nonself markers so that it can be distinguished from the native cells. B cells carry self-markers so that the immune system can differentiate between native and non-native cells.
Hence, option (b) is correct.
Justify the reasons for the incorrect statements:
Option (a) is given as “self, nonself”.
A microorganism carries nonself markers and a B cell carries self-markers. Hence, it is a wrong answer.
Option (c) is given as “self, self”.
A microorganism doesn’t carry self-markers and a B cell carries self-markers. Hence, it is a wrong answer.
Option (d) is given as “nonself, nonself”.
A microorganism carries nonself markers and a B cell does not carry nonself markers. Hence, it is a wrong answer.
Hence, options (a), (c) and (d) are incorrect.
Conclusion
A microorganism carries non-self-markers and a B cell carries self-markers
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Chapter 12 Solutions
Microbiology Fundamentals: A Clinical Approach
Ch. 12.1 - Summarize the three lines of host defenses.Ch. 12.1 - Define marker and discuss its importance in the...Ch. 12.1 - Prob. 3AYPCh. 12.1 - Prob. 4AYPCh. 12.1 - Name three kinds of blood cells that function in...Ch. 12.1 - Connect the mononuclear phagocyte system to innate...Ch. 12.1 - Describe how T and B lymphocytes are involved in...Ch. 12.1 - Prob. 8AYPCh. 12.1 - Prob. 1MMCh. 12.1 - Prob. 1NP
Ch. 12.1 - Prob. 2MMCh. 12.2 - Prob. 9AYPCh. 12.2 - Prob. 10AYPCh. 12.2 - Prob. 11AYPCh. 12.2 - Prob. 2NPCh. 12.3 - List the four major categories of nonspecific...Ch. 12.3 - Prob. 13AYPCh. 12.3 - Prob. 14AYPCh. 12.3 - Prob. 15AYPCh. 12.3 - Name four types of antimicrobial host-derived...Ch. 12.3 - Prob. 17AYPCh. 12.3 - Prob. 3NPCh. 12.3 - NCLEX PREX 4. A patient presents to the emergency...Ch. 12.3 - Prob. 5NPCh. 12 - A microorganism carries _____ markers and a B cell...Ch. 12 - Prob. 2QCh. 12 - The pediatrician you work for has just recommended...Ch. 12 - Prob. 4QCh. 12 - In what way is a phagocyte a tiny container of...Ch. 12 - Prob. 6QCh. 12 - Prob. 7QCh. 12 - Prob. 8QCh. 12 - Explain the physiological events that lead to each...Ch. 12 - Prob. 10QCh. 12 - Prob. 11QCh. 12 - Prob. 12QCh. 12 - Prob. 13QCh. 12 - Why do you think that the intestines have one of...Ch. 12 - Prob. 15QCh. 12 - Prob. 16QCh. 12 - Prob. 17QCh. 12 - Prob. 18QCh. 12 - Figure 12.3 demonstrates that lymphatic fluid...Ch. 12 - Prob. 20QCh. 12 - Prob. 21QCh. 12 - Prob. 1VC
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