Entamoeba

Question 1

What type of organism is Entamoeba?

Answer 1

Entamoeba is a genus of protozoa.

Question 2

True or False: Entamoeba histolytica is the only pathogenic species of Entamoeba.

Question 3

What disease is primarily caused by Entamoeba histolytica?

Answer 3

Amoebic dysentery.

Question 4

Fill in the blank: Entamoeba histolytica can invade the ________ lining.

Answer 4

intestinal.

Question 5

What is the main mode of transmission for Entamoeba?

Answer 5

Fecal-oral route.

Question 6

Multiple Choice: Which of the following is a symptom of amoebic dysentery? A) Fever B) Diarrhea C) Abdominal pain D) All of the above

Answer 6

D) All of the above.

Question 7

What is the primary diagnostic method for Entamoeba infections?

Answer 7

Stool examination.

Question 8

True or False: Entamoeba histolytica can exist in both cyst and trophozoite forms.

Answer 8

True.

Question 9

Fill in the blank: The cyst form of Entamoeba is resistant to ________.

Answer 9

environmental conditions.

Question 10

What is the size range of Entamoeba histolytica cysts?

Answer 10

10 to 20 micrometers.

Question 11

Multiple Choice: Which of the following treatments is effective against Entamoeba histolytica? A) Metronidazole B) Amoxicillin C) Ciprofloxacin D) Azithromycin

Answer 11

A) Metronidazole.

Question 12

What are the two main forms of Entamoeba histolytica?

Answer 12

Cyst and trophozoite.

Question 13

True or False: Entamoeba dispar is pathogenic to humans.

Answer 13

False.

Question 14

Fill in the blank: Entamoeba histolytica can cause ________ abscesses in the liver.

Answer 14

amoebic.

Question 15

What is the term for the phase of Entamoeba that is active and feeding?

Answer 15

Trophozoite.

Question 16

Multiple Choice: Which population is at higher risk for Entamoeba infections? A) Urban dwellers B) Travelers to endemic areas C) Vegetarians D) Non-smokers

Answer 16

B) Travelers to endemic areas.

Question 17

What is the recommended preventive measure against Entamoeba infections?

Answer 17

Good sanitation and hygiene practices.

Question 18

True or False: Entamoeba histolytica can survive outside the host for extended periods.

Answer 18

True.

Question 19

Fill in the blank: The primary reservoir for Entamoeba histolytica is ________.

Answer 19

humans.

Question 20

What is the incubation period for Entamoeba histolytica infection?

Answer 20

1 to 4 weeks.

Question 21

Multiple Choice: Which of the following is NOT a symptom of amoebic dysentery? A) Bloody diarrhea B) Vomiting C) Severe abdominal pain D) Skin rash

Answer 21

D) Skin rash.

Question 22

What is the main complication associated with untreated Entamoeba histolytica infections?

Answer 22

Intestinal perforation.

Question 23

True or False: Cysts of Entamoeba histolytica can be found in contaminated water.

Answer 23

True.

Question 24

Fill in the blank: Entamoeba histolytica is classified under the phylum ________.

Answer 24

Amoebozoa.

Question 25

What is the typical lifespan of Entamoeba histolytica cysts in favorable conditions?

Answer 25

Several months.

Question 26

Multiple Choice: Which diagnostic test is most commonly used to identify Entamoeba histolytica? A) Blood test B) Colonoscopy C) Stool test D) Urinalysis

Answer 26

C) Stool test.

Question 27

What type of immune response is typically elicited by Entamoeba histolytica?

Answer 27

Both humoral and cellular immune responses.

Question 28

True or False: Entamoeba infections can be asymptomatic.

Answer 28

True.

Question 29

Fill in the blank: The presence of ________ in stool samples indicates an Entamoeba histolytica infection.

Answer 29

trophozoites.

Question 30

What is the significance of the Entamoeba histolytica lectin?

Answer 30

It helps the parasite adhere to the intestinal lining.

Question 31

Multiple Choice: Which of the following is a risk factor for developing severe symptoms from Entamoeba histolytica? A) Good nutrition B) Immunosuppression C) High fiber diet D) Regular exercise

Answer 31

B) Immunosuppression.

Question 32

True or False: Entamoeba histolytica infections are more common in developed countries.

Answer 32

False.

Question 33

Fill in the blank: The treatment for severe Entamoeba histolytica infections may include ________ therapy.

Answer 33

surgical.

Question 34

What is the characteristic feature of Entamoeba histolytica trophozoites under a microscope?

Answer 34

They have a single nucleus and a prominent endosome.

Question 35

Multiple Choice: Which of the following is a common laboratory finding in Entamoeba histolytica infections? A) Elevated white blood cell count B) Low hemoglobin C) High platelet count D) Elevated liver enzymes

Answer 35

A) Elevated white blood cell count.

Question 36

True or False: All species of Entamoeba are pathogenic.

Answer 36

False.

Question 37

Fill in the blank: The primary method of prevention for Entamoeba infections is ________ sanitation.

Answer 37

improved.

Question 38

What is the role of antibiotics in the treatment of Entamoeba histolytica infections?

Answer 38

Antibiotics are used to kill the protozoa.

Question 39

Multiple Choice: Which age group is most affected by Entamoeba histolytica? A) Infants B) Adolescents C) Adults D) Elderly

Answer 39

C) Adults.

Question 40

True or False: Entamoeba histolytica can be transmitted through sexual contact.

Answer 40

True.

Question 41

Fill in the blank: The global regions most affected by Entamoeba histolytica are ________ countries.

Answer 41

developing.

Question 42

What is the best practice for travelers to avoid Entamoeba infections?

Answer 42

Drink bottled or treated water.

Question 43

Multiple Choice: The presence of which symptom suggests a more severe Entamoeba histolytica infection? A) Mild diarrhea B) Severe dehydration C) Occasional nausea D) Fatigue

Answer 43

B) Severe dehydration.

Question 44

True or False: Vaccines for Entamoeba histolytica are currently available.

Answer 44

False.

Question 45

Fill in the blank: Entamoeba histolytica is often diagnosed during a ________ examination.

Answer 45

stool.