Bacterial Reproduction/Normal Flora L3

Question 1

(T/F)
Human body is a carrier of microorganisms or is continually inhabited by
microorganisms

Answer 1

True

Question 2

microorganisms that live in healthy human body with harmless
effect and may even be beneficial

Answer 2

Normal flora

Question 3

Normal flora are considered?

Answer 3

Commensal

Question 4

What organisms drive benefit from the host with
no damage effect

Answer 4

Commensal

Question 5

Human microbiome is another term for

Answer 5

Normal flora

Question 6

The most common area of the body inhabited by
normal flora are:

Answer 6

Skin
Mouth
Nose
Large intestine
Vagina

Question 7

The highest numbers of normal flora are present in ?

Answer 7

skin and large intestine

Question 8

Name the organs that are sterile from normal flora

Answer 8

Internal organs
Blood
Liver
Spleen
Kidneys
Heart
Brain

Question 9

When can NF be harmful?

Answer 9

If they are opportunists

Question 10

Opportunists are?

Answer 10

They cause diseases when host resistance is impaired
- poor health
- Malnutrition
- Drug therapy

Question 11

How can NF cause diseases?

Answer 11

-They can overgrow If there’s Immune deficiency
-Conversion of food into carcinogenics
-Displacement from their normal sire
-Depletion of normal bowel flora during antibiotic therapy

Question 12

Conversion of some ingested food
substances into carcinogenic
derivatives by bacteria in the?

Answer 12

Colon

Question 13

Depletion of normal bowel flora
during antibiotic therapy causes over
growth of resistant Clostridium
difficile causing severe colitis.

Question 14

Relationship Between Normal Flora and Host

Answer 14

A Symbiosis Relation

Question 15

How many kinds of Symbiosis Relations Between Normal Flora and Host

Answer 15

-Commenalism
-Mutualism
-Parasitism

Question 16

It means one organism benefits and the other is unaffected

Answer 16

Commensalism

Question 17

Transfer of commensal bacteria from its usual habitat is totally okay (T/F)

Answer 17

False

Question 18

Both organisms benefit (bacteria and host)

Answer 18

Mutalism

Question 19

Bacteria present in the intestinal tract synthesize
vitamin K, which is used by man and the bacteria utilize the
food that is supplied is an example of

Answer 19

Mutualism relationship

Question 20

E. coli present in the intestinal tract, if it enters the urinary tract it can cause infection is an example of

Answer 20

Commensalism

Question 21

One organism benefits at the expense of the other

Answer 21

Parasitism

Question 22

Parasites are organisms that cause?

Answer 22

harm to their host

Question 23

examples of parasitism

Answer 23

Bacteria, viruses and fungi

Question 24

Opportunistic organisms often cause

Answer 24

hospital acquired infections

Question 25

Name the Beneficial Function of Normal Flora

Answer 25

Help in the digestion and absorption of nutrients
• Compete for essential nutrients of pathogens
• Interfere with an invading pathogen adherence
• Provide important nutrients such as vitamin K
• Maintain inhibitory pH in vagina and skin
• Colonization resistance

Question 26

Opportunists cause disease when ?

Answer 26

host’s resistance is impaired
1. Poor health 2. Malnutrition 3. Drug therapy

Question 27

Harmful Effects of Normal Flora

Answer 27

• Normal flora can overgrow and become pathogenic
• Conversion of some ingested food substances into carcinogenic derivatives by bacteria in the colon.
• Displacement from their normal site to abnormal site in body
• Depletion of normal bowel flora during antibiotic therapy causes over growth of resistant