Aerobic Gram Negative Cocci

Question 1

What shape do Neisseria bacteria have?

Answer 1

Diplococci

Question 2

Are Neisseria species oxidase positive or negative?

Answer 2

Positive

Question 3

What type of medium is Thayer-Martin?

Answer 3

Selective culture medium for Neisseria species

Question 4

What sugars can Neisseria gonorrhoeae ferment?

Answer 4

Glucose only

Question 5

True or False: Neisseria meningitidis can ferment maltose.

Answer 5

True

Question 6

Fill in the blank: Neisseria species are commonly arranged in pairs known as _____

Answer 6

Diplococci

Question 7

What is the main characteristic of Thayer-Martin medium?

Answer 7

It inhibits the growth of other bacteria while allowing Neisseria to grow.

Question 8

Which Neisseria species is responsible for gonorrhea?

Answer 8

Neisseria gonorrhoeae

Question 9

Which sugar can Neisseria meningitidis ferment?

Answer 9

Glucose and maltose

Question 10

What is the primary clinical significance of Neisseria species?

Answer 10

They can cause infections such as gonorrhea and meningitis.

Question 11

Multiple Choice: Which of the following sugars can Neisseria gonorrhoeae ferment? A) Glucose B) Maltose C) Sucrose D) Lactose

Answer 11

A) Glucose

Question 12

True or False: Neisseria species can be found in normal human flora.

Answer 12

True

Question 13

What color do oxidase positive bacteria turn in the oxidase test?

Answer 13

Purple

Question 14

Fill in the blank: Neisseria species are often cultured in _____ environments.

Answer 14

Carbon dioxide enriched

Question 15

What is the main component in Thayer-Martin medium that suppresses other organisms?

Answer 15

Antibiotics

Question 16

Which Neisseria species is known to cause bacterial meningitis?

Answer 16

Neisseria meningitidis

Question 17

What type of bacteria are Neisseria classified as?

Answer 17

Gram-negative cocci

Question 18

Multiple Choice: Which of the following is NOT a characteristic of Neisseria species? A) Diplococci B) Fermentative C) Anaerobic D) Oxidase positive

Answer 18

C) Anaerobic

Question 19

What is the primary reservoir for Neisseria meningitidis?

Answer 19

Humans

Question 20

True or False: Neisseria can grow on regular agar without any special conditions.

Answer 20

False

Question 21

What is the typical appearance of Neisseria colonies on Thayer-Martin agar?

Answer 21

Small, grayish colonies

Question 22

Fill in the blank: Neisseria species require _____ for growth.

Answer 22

Moist environments

Question 23

What is the role of glucose in the metabolism of Neisseria species?

Answer 23

It serves as a primary energy source.

Question 24

What is the biochemical test used to identify Neisseria species?

Answer 24

Oxidase test

Question 25

Which Neisseria species ferments lactose?

Answer 25

None of the common pathogenic Neisseria species ferment lactose.

Question 26

True or False: Neisseria species are known to produce a capsule.

Answer 26

True, particularly Neisseria meningitidis.

Question 27

Fill in the blank: Neisseria meningitidis can be identified by its ability to ferment _____ and _____.

Answer 27

Glucose and maltose

Question 28

What is the preferred temperature for culturing Neisseria species?

Answer 28

35-37 degrees Celsius

Question 29

Which Neisseria species is often associated with outbreaks in crowded settings?

Answer 29

Neisseria meningitidis

Question 30

Multiple Choice: Which of the following is a common symptom of gonorrhea? A) Rash B) Painful urination C) Cough D) Fever

Answer 30

B) Painful urination

Question 31

What is the significance of the oxidase test in identifying Neisseria?

Answer 31

It confirms the presence of cytochrome c oxidase.

Question 32

Fill in the blank: Neisseria species can be differentiated from other bacteria by their _____.

Answer 32

Morphology and biochemical tests

Question 33

True or False: Neisseria species can survive in dry conditions.

Answer 33

False

Question 34

What is a common laboratory technique used to isolate Neisseria species?

Answer 34

Culture on selective media

Question 35

Which Neisseria species is primarily transmitted through sexual contact?

Answer 35

Neisseria gonorrhoeae

Question 36

What type of infections can Neisseria species cause?

Answer 36

Sexually transmitted infections and meningitis

Question 37

Fill in the blank: Neisseria species require _____ for optimal growth.

Answer 37

Carbon dioxide

Question 38

What is the main treatment for Neisseria gonorrhoeae infections?

Answer 38

Antibiotics

Question 39

Which Neisseria species is known to cause septicemia?

Answer 39

Neisseria meningitidis