Medical Microbiology Lecture No. 5(b)-7: Neisseria General Characteristics

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Which characteristic is common to both Neisseria gonorrhoeae and Neisseria meningitidis?

Oxidase positive (correct)

Ferment carbohydrates producing gas

Pathogenic to humans only

Non-motile

What is the most suitable atmosphere for the growth of pathogenic Neisseria species?

Atmosphere containing 5-10% CO2 (correct)

Atmosphere containing 20% O2

Atmosphere containing 30% O2

Atmosphere containing 50% CO2

Which of the following is a non-pathogenic (commensal) Neisseria species?

N. mucosa

N. catarrhalis (correct)

N. meningitidis

N. gonorrhoeae

What is the shape of Neisseria diplococci with flat or concave opposing edge?

Kidney shape Signup and view all the answers

Which feature distinguishes pathogenic Neisseria species from non-pathogenic ones?

Intracellular vs extracellular localization Signup and view all the answers

What type of agar is typically needed for the growth of pathogenic species?

Blood agar Signup and view all the answers

What distinguishes meningococci from gonococci in terms of their growth characteristics?

Meningococci grow faster and form larger colonies Signup and view all the answers

Which statement about Neisseria gonorrhoeae (Gonococcus) is correct?

It requires complex media pre-warmed to 35-37°C Signup and view all the answers

What is the primary mode of transmission for Neisseria gonorrhoeae?

Sexual contact Signup and view all the answers

What complication can gonorrhea cause in women?

Pelvic Inflammatory Disease (PID) Signup and view all the answers

What is the distinctive arrangement of Neisseria diplococci?

Arranged in pairs with adjacent sides flattened (like coffee beans) Signup and view all the answers

What is the primary distinguishing characteristic of pathogenic Neisseria species?

They are intracellular Signup and view all the answers

What is the preferred growth environment for Neisseria species?

Atmosphere containing (5-10)% of CO2 on heated blood agar (chocolate agar) Signup and view all the answers

What is the distinguishing characteristic of non-pathogenic (commensal) Neisseria species?

They are normal inhabitants of the human respiratory tract Signup and view all the answers

What is the characteristic that distinguishes Neisseria gonorrhoeae (Gonococcus) from Neisseria meningitidis (meningococci)?

Neisseria gonorrhoeae is a cause of gonorrhea, a sexually transmitted disease (STD) Signup and view all the answers

What distinguishes the growth requirements of non-pathogenic Neisseria species from pathogenic species?

simple media vs. enriched media (e.g. blood and chocolate agar) Signup and view all the answers

How are gonococci and meningococci differentiated?

few LAB tests and specific characteristics Signup and view all the answers

What is the primary mode of transmission for Neisseria gonorrhoeae?

sexual contact Signup and view all the answers

What are the differences in clinical presentation between men and women infected with Neisseria gonorrhoeae?

Men: Urethritis; Epididymitis; Women: Cervicitis; Vaginitis; Salpingitis Signup and view all the answers

What is the consequence of untreated Neisseria gonorrhoeae infection in newborns?

blindness Signup and view all the answers

Medical Microbiology Lecture No. 5(b)-7: Neisseria General Characteristics

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Questions and Answers

Which characteristic is common to both Neisseria gonorrhoeae and Neisseria meningitidis?

What is the most suitable atmosphere for the growth of pathogenic Neisseria species?

Which of the following is a non-pathogenic (commensal) Neisseria species?

What is the shape of Neisseria diplococci with flat or concave opposing edge?

Which feature distinguishes pathogenic Neisseria species from non-pathogenic ones?

What type of agar is typically needed for the growth of pathogenic species?

What distinguishes meningococci from gonococci in terms of their growth characteristics?

Which statement about Neisseria gonorrhoeae (Gonococcus) is correct?

What is the primary mode of transmission for Neisseria gonorrhoeae?

What complication can gonorrhea cause in women?

What is the distinctive arrangement of Neisseria diplococci?

What is the primary distinguishing characteristic of pathogenic Neisseria species?

What is the preferred growth environment for Neisseria species?

What is the distinguishing characteristic of non-pathogenic (commensal) Neisseria species?

What is the characteristic that distinguishes Neisseria gonorrhoeae (Gonococcus) from Neisseria meningitidis (meningococci)?

What distinguishes the growth requirements of non-pathogenic Neisseria species from pathogenic species?

How are gonococci and meningococci differentiated?

What is the primary mode of transmission for Neisseria gonorrhoeae?

What are the differences in clinical presentation between men and women infected with Neisseria gonorrhoeae?

What is the consequence of untreated Neisseria gonorrhoeae infection in newborns?

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