Most human infections caused by species of Rickettsia _______ . a. are acquired from fomites b. could be prevented by handwashing c. are transmitted via vectors d. are sexually transmitted

Question

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Answer 1

Textbook Question

Chapter 21, Problem 1MC

Most human infections caused by species of Rickettsia _______.

a. are acquired from fomites
b. could be prevented by handwashing
c. are transmitted via vectors
d. are sexually transmitted

Expert Solution & Answer

Summary Introduction

Introduction:

Rickettsia is Gram negative, non spore forming bacteria. They are obligate parasite that lives inside host cell. Rickettsia species synthesized less amount of peptidoglycan and hence, appear as cell wall less organisms. Thus, these organisms are also called as pleomorphic organism; they have ability to change their shape.

Answer to Problem 1MC

Correct answer:

Most human infection caused by species of Rickettsia bacteria are transmitted via vectors.

Therefore, option (c) is correct.

Option (c) is given as “are transmitted via vectors.”

Explanation of Solution

Justify reason for the correct statement:

Rickettsia belongs to Gram negative family. They are small, pleomorphic and wall less organisms. They are obligate parasites and cause Rocky Mountain spotted fever in humans. Rickettsia was first identified by scientists named Howard Ricketts who identified that these bacteria are transmitted through tick vector.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “are acquired from fomites.”

Rickettsia bacteria are not acquired through fomites. Hence, it is a wrong answer.

Option (b) is given as “could be prevented by handwashing.”

Rickettsia bacteria are transmitted through vectors. So, they are not prevented by handwashing. Hence, it is a wrong answer.

Option (d) is given as “are sexually transmitted.”

Rickettsia bacteria are not sexually transmitted. Hence, it is a wrong answer.

Hence, options (a), (b), and (d) are incorrect.

Conclusion

Rickettsia bacteria belong to Gram negative family and transmitted through tick vector.

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Answer 2

Textbook Question

Chapter 21, Problem 1MC

Most human infections caused by species of Rickettsia _______.

a. are acquired from fomites
b. could be prevented by handwashing
c. are transmitted via vectors
d. are sexually transmitted

Expert Solution & Answer

Summary Introduction

Introduction:

Rickettsia is Gram negative, non spore forming bacteria. They are obligate parasite that lives inside host cell. Rickettsia species synthesized less amount of peptidoglycan and hence, appear as cell wall less organisms. Thus, these organisms are also called as pleomorphic organism; they have ability to change their shape.

Answer to Problem 1MC

Correct answer:

Most human infection caused by species of Rickettsia bacteria are transmitted via vectors.

Therefore, option (c) is correct.

Option (c) is given as “are transmitted via vectors.”

Explanation of Solution

Justify reason for the correct statement:

Rickettsia belongs to Gram negative family. They are small, pleomorphic and wall less organisms. They are obligate parasites and cause Rocky Mountain spotted fever in humans. Rickettsia was first identified by scientists named Howard Ricketts who identified that these bacteria are transmitted through tick vector.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “are acquired from fomites.”

Rickettsia bacteria are not acquired through fomites. Hence, it is a wrong answer.

Option (b) is given as “could be prevented by handwashing.”

Rickettsia bacteria are transmitted through vectors. So, they are not prevented by handwashing. Hence, it is a wrong answer.

Option (d) is given as “are sexually transmitted.”

Rickettsia bacteria are not sexually transmitted. Hence, it is a wrong answer.

Hence, options (a), (b), and (d) are incorrect.

Conclusion

Rickettsia bacteria belong to Gram negative family and transmitted through tick vector.

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Answer 3

Textbook Question

Chapter 21, Problem 1MC

Most human infections caused by species of Rickettsia _______.

a. are acquired from fomites
b. could be prevented by handwashing
c. are transmitted via vectors
d. are sexually transmitted

Expert Solution & Answer

Summary Introduction

Introduction:

Rickettsia is Gram negative, non spore forming bacteria. They are obligate parasite that lives inside host cell. Rickettsia species synthesized less amount of peptidoglycan and hence, appear as cell wall less organisms. Thus, these organisms are also called as pleomorphic organism; they have ability to change their shape.

Answer to Problem 1MC

Correct answer:

Most human infection caused by species of Rickettsia bacteria are transmitted via vectors.

Therefore, option (c) is correct.

Option (c) is given as “are transmitted via vectors.”

Explanation of Solution

Justify reason for the correct statement:

Rickettsia belongs to Gram negative family. They are small, pleomorphic and wall less organisms. They are obligate parasites and cause Rocky Mountain spotted fever in humans. Rickettsia was first identified by scientists named Howard Ricketts who identified that these bacteria are transmitted through tick vector.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “are acquired from fomites.”

Rickettsia bacteria are not acquired through fomites. Hence, it is a wrong answer.

Option (b) is given as “could be prevented by handwashing.”

Rickettsia bacteria are transmitted through vectors. So, they are not prevented by handwashing. Hence, it is a wrong answer.

Option (d) is given as “are sexually transmitted.”

Rickettsia bacteria are not sexually transmitted. Hence, it is a wrong answer.

Hence, options (a), (b), and (d) are incorrect.

Conclusion

Rickettsia bacteria belong to Gram negative family and transmitted through tick vector.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Textbook Question

Chapter 21, Problem 1MC

Most human infections caused by species of Rickettsia _______.

a. are acquired from fomites
b. could be prevented by handwashing
c. are transmitted via vectors
d. are sexually transmitted

Expert Solution & Answer

Summary Introduction

Introduction:

Rickettsia is Gram negative, non spore forming bacteria. They are obligate parasite that lives inside host cell. Rickettsia species synthesized less amount of peptidoglycan and hence, appear as cell wall less organisms. Thus, these organisms are also called as pleomorphic organism; they have ability to change their shape.

Answer to Problem 1MC

Correct answer:

Most human infection caused by species of Rickettsia bacteria are transmitted via vectors.

Therefore, option (c) is correct.

Option (c) is given as “are transmitted via vectors.”

Explanation of Solution

Justify reason for the correct statement:

Rickettsia belongs to Gram negative family. They are small, pleomorphic and wall less organisms. They are obligate parasites and cause Rocky Mountain spotted fever in humans. Rickettsia was first identified by scientists named Howard Ricketts who identified that these bacteria are transmitted through tick vector.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “are acquired from fomites.”

Rickettsia bacteria are not acquired through fomites. Hence, it is a wrong answer.

Option (b) is given as “could be prevented by handwashing.”

Rickettsia bacteria are transmitted through vectors. So, they are not prevented by handwashing. Hence, it is a wrong answer.

Option (d) is given as “are sexually transmitted.”

Rickettsia bacteria are not sexually transmitted. Hence, it is a wrong answer.

Hence, options (a), (b), and (d) are incorrect.

Conclusion

Rickettsia bacteria belong to Gram negative family and transmitted through tick vector.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Summary Introduction

Introduction:

Rickettsia is Gram negative, non spore forming bacteria. They are obligate parasite that lives inside host cell. Rickettsia species synthesized less amount of peptidoglycan and hence, appear as cell wall less organisms. Thus, these organisms are also called as pleomorphic organism; they have ability to change their shape.

Answer to Problem 1MC

Correct answer:

Most human infection caused by species of Rickettsia bacteria are transmitted via vectors.

Therefore, option (c) is correct.

Option (c) is given as “are transmitted via vectors.”

Explanation of Solution

Justify reason for the correct statement:

Rickettsia belongs to Gram negative family. They are small, pleomorphic and wall less organisms. They are obligate parasites and cause Rocky Mountain spotted fever in humans. Rickettsia was first identified by scientists named Howard Ricketts who identified that these bacteria are transmitted through tick vector.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “are acquired from fomites.”

Rickettsia bacteria are not acquired through fomites. Hence, it is a wrong answer.

Option (b) is given as “could be prevented by handwashing.”

Rickettsia bacteria are transmitted through vectors. So, they are not prevented by handwashing. Hence, it is a wrong answer.

Option (d) is given as “are sexually transmitted.”

Rickettsia bacteria are not sexually transmitted. Hence, it is a wrong answer.

Hence, options (a), (b), and (d) are incorrect.

Conclusion

Rickettsia bacteria belong to Gram negative family and transmitted through tick vector.

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction:

Rickettsia is Gram negative, non spore forming bacteria. They are obligate parasite that lives inside host cell. Rickettsia species synthesized less amount of peptidoglycan and hence, appear as cell wall less organisms. Thus, these organisms are also called as pleomorphic organism; they have ability to change their shape.

Answer to Problem 1MC

Correct answer:

Most human infection caused by species of Rickettsia bacteria are transmitted via vectors.

Therefore, option (c) is correct.

Option (c) is given as “are transmitted via vectors.”

Explanation of Solution

Justify reason for the correct statement:

Rickettsia belongs to Gram negative family. They are small, pleomorphic and wall less organisms. They are obligate parasites and cause Rocky Mountain spotted fever in humans. Rickettsia was first identified by scientists named Howard Ricketts who identified that these bacteria are transmitted through tick vector.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “are acquired from fomites.”

Rickettsia bacteria are not acquired through fomites. Hence, it is a wrong answer.

Option (b) is given as “could be prevented by handwashing.”

Rickettsia bacteria are transmitted through vectors. So, they are not prevented by handwashing. Hence, it is a wrong answer.

Option (d) is given as “are sexually transmitted.”

Rickettsia bacteria are not sexually transmitted. Hence, it is a wrong answer.

Hence, options (a), (b), and (d) are incorrect.

Conclusion

Rickettsia bacteria belong to Gram negative family and transmitted through tick vector.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction:

Rickettsia is Gram negative, non spore forming bacteria. They are obligate parasite that lives inside host cell. Rickettsia species synthesized less amount of peptidoglycan and hence, appear as cell wall less organisms. Thus, these organisms are also called as pleomorphic organism; they have ability to change their shape.

Answer 12

Answer to Problem 1MC

Correct answer:

Most human infection caused by species of Rickettsia bacteria are transmitted via vectors.

Therefore, option (c) is correct.

Option (c) is given as “are transmitted via vectors.”

Answer 13

Explanation of Solution

Justify reason for the correct statement:

Rickettsia belongs to Gram negative family. They are small, pleomorphic and wall less organisms. They are obligate parasites and cause Rocky Mountain spotted fever in humans. Rickettsia was first identified by scientists named Howard Ricketts who identified that these bacteria are transmitted through tick vector.

Hence, option (c) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “are acquired from fomites.”

Rickettsia bacteria are not acquired through fomites. Hence, it is a wrong answer.

Option (b) is given as “could be prevented by handwashing.”

Rickettsia bacteria are transmitted through vectors. So, they are not prevented by handwashing. Hence, it is a wrong answer.

Option (d) is given as “are sexually transmitted.”

Rickettsia bacteria are not sexually transmitted. Hence, it is a wrong answer.

Hence, options (a), (b), and (d) are incorrect.

Answer 14

Conclusion

Rickettsia bacteria belong to Gram negative family and transmitted through tick vector.

Answer 15

Ch. 21 - Most human infections caused by species of...Ch. 21 - Prob. 2MC Ch. 21 - Prob. 3MC Ch. 21 - Prob. 4MC Ch. 21 - The most commonly reported sexually transmitted...Ch. 21 - Prob. 6MC Ch. 21 - Prob. 7MC Ch. 21 - Prob. 8MC Ch. 21 - Prob. 9MC Ch. 21 - Prob. 10MC

Most human infections caused by species of Rickettsia _______ . a. are acquired from fomites b. could be prevented by handwashing c. are transmitted via vectors d. are sexually transmitted

Solution Summary: The author explains that Rickettsia is a Gram negative, non-spore-forming, obligate parasite that lives inside host cell.

Videos

Answer to Problem 1MC

Explanation of Solution

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Chapter 21 Solutions