Q: Which equation best represents the process of mitosis in eukaryotic microbes?

$$\text{Parent cell} \rightarrow 2 \text{daughter cells with identical chromosomes}$$

Question 1

Which of the following is a distinguishing feature of eukaryotic microbes compared to prokaryotes?

Accepted Answer

DNA enclosed within a nucleus

Question 2

Microscopic algae play a crucial role in Earth's ecology by:

Accepted Answer

Producing much of Earth's oxygen

Question 3

Which of the following is a direct parasitic agent that infects humans?

Accepted Answer

Tapeworm

Question 4

A mosquito transmits Zika virus to humans. In this scenario, the mosquito is acting as:

Accepted Answer

A biological vector

Question 5

Which of the following best describes the life cycle of Giardia duodenalis?

Accepted Answer

Alternates between trophozoite and infectious resistant cyst forms

Question 6

Giardia trophozoites attach to the intestinal mucosa using which structure?

Accepted Answer

Ventral disc

Question 7

Which of the following statements about Giardia cysts is TRUE?

Accepted Answer

They have a thick wall and four nuclei

Question 8

A patient presents with severe diarrhea, malabsorption, and weight loss after swimming in a lake. Which organism is most likely responsible?

Accepted Answer

Giardia duodenalis

Question 9

Which diagnostic method is most sensitive for detecting Giardia infection?

Accepted Answer

Stool antigen detection assay

Question 10

Metronidazole is the first-line treatment for giardiasis. Why should it be used with caution in pregnant women?

Accepted Answer

It may cause cleft lip in the fetus

Question 11

Which equation best represents the process of mitosis in eukaryotic microbes?

Accepted Answer

$$	ext{Parent cell} ightarrow 2 	ext{daughter cells with identical chromosomes}$$

Question 12

Which of the following is a common misconception about mechanical vectors?

Accepted Answer

They transmit pathogens by allowing them to multiply inside their bodies

Question 13

Zika virus belongs to which viral family?

Accepted Answer

Flaviviridae

Question 14

Which mosquito species is the primary vector for Zika virus?

Accepted Answer

Aedes aegypti

Question 15

Zika virus infection in adults is associated with which neurological disorder?

Accepted Answer

Guillain-Barré Syndrome

Question 16

Which of the following is NOT a mode of Zika virus transmission?

Accepted Answer

Airborne droplets

Question 17

The sylvatic cycle of Zika virus involves transmission between:

Accepted Answer

Non-human primates and forest mosquitoes

Question 18

Which of the following statements about Zika virus sexual transmission is correct?

Accepted Answer

Even asymptomatic individuals can transmit the virus

Question 19

A patient with giardiasis is found to have altered gastrointestinal motility. Which structure of Giardia is most responsible for disrupting intestinal epithelial cell junctions?

Accepted Answer

Ventral disc

Question 20

Which of the following best explains why collecting three stool samples on different days increases the sensitivity of Giardia detection by microscopy?

Accepted Answer

Giardia is shed intermittently in stool

lec 10:Eukaryotic Microbes and Invertebrate Infectious Agents: Structure, Function, and Pathogenesis

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