MIDTERM - ALL TOPICS

Question 1

What must always be worn as personal protective equipment?

Answer 1

Gloves, goggles, and a laboratory gown

Question 2

Never recap needles using _____ hands; instead, practice the one-hand scoop method.

Answer 2

both

Question 3

Is mouth pipetting acceptable if using non-hazardous liquids?

Answer 3

False

Question 4

What is the disinfectant solution commonly used for microscope slides after fecal smears?

Answer 4

1% hypochlorite solution

Question 5

The use of _____ oil enhances the resolution power of a microscope.

Answer 5

immersion

Question 6

Is eating allowed in the laboratory only during breaks?

Answer 6

False

Question 7

Who is recognized as the ‘Father of Microscopy’?

Answer 7

Antonie van Leeuwenhoek

Question 8

_____ eggs are typically seen in sputum samples infected by Paragonimus westermani.

Answer 8

Paragonimus

Question 9

Should gloves be changed and hands washed after processing specimens?

Answer 9

True

Question 10

What is the fixative used in FECT technique?

Answer 10

Formalin

Question 11

A good microscope should have good resolution, contrast, and _____.

Answer 11

magnification

Question 12

Should all biological samples be considered potentially infectious?

Answer 12

True

Question 13

What is the larval stage of Strongyloides stercoralis that is infective?

Answer 13

Filariform larva

Question 14

_____ solution is used as a stain and preservative in the MIF technique.

Answer 14

Merthiolate-iodine-formalin

Question 15

Is the iris diaphragm used to magnify the image?

Answer 15

False

Question 16

What is the slide method commonly used for Enterobius vermicularis diagnosis?

Answer 16

Cellophane tape method

Question 17

_____ worms are identified by the presence of cutting plates or teeth in their buccal capsule.

Answer 17

Hookworms

Question 18

Should O&P tests be performed on only one stool sample for reliable diagnosis?

Answer 18

False

Question 19

What is the reproductive structure unique to male hookworms?

Answer 19

Copulatory bursa

Question 20

_____ microscopy uses UV light and shows fluorescent objects on a dark background.

Answer 20

Fluorescence

Question 21

Is a thick malarial smear used for malaria detection?

Answer 21

True

Question 22

What is the disinfectant that is corrosive but effective against bacteria, fungi, and some viruses?

Answer 22

Phenol (1%)

Question 23

The _____ technique uses cellophane soaked in glycerin and malachite green.

Answer 23

Kato-Katz

Question 24

Are gloves alone sufficient protection for aerosol-generating procedures?

Answer 24

False

Question 25

What is the most common parasitological specimen?

Answer 25

Stool

Question 26

_____ microscopy uses differences in refractive indices to visualize living cells.

Answer 26

Phase contrast

Question 27

Are Capillaria philippinensis eggs peanut- or guitar-shaped?

Answer 27

True

Question 28

What structure controls light intensity in a microscope?

Answer 28

Iris diaphragm

Question 29

_____ eggs have bipolar plugs and resemble a Japanese lantern.

Answer 29

Trichuris trichiura

Question 30

Should microscope lenses be cleaned using tissue paper?

Answer 30

False

Question 31

What is the microscope part that rotates objective lenses?

Answer 31

Revolving nosepiece

Question 32

Avoid contaminating stool samples with _____ or soil.

Answer 32

urine

Question 33

Do Enterobius vermicularis eggs have one flat and one curved side?

Answer 33

True

Question 34

What is the larval stage of hookworm that is non-infective?

Answer 34

Rhabditiform larva

Question 35

The _____ stain is used for blood smears to detect parasites like Plasmodium.

Answer 35

Giemsa

Question 36

Is Capillaria the only nematode with a spicule sheath?

Answer 36

True

Question 37

What is the diagnostic stage of Ascaris lumbricoides?

Answer 37

Fertilized egg

Question 38

Stool samples should never be _____?

Answer 38

frozen

Question 39

Can the formalin-ether technique be used on preserved and fresh stool samples?

Answer 39

True

Question 40

What is the fixative that contains toxic mercuric chloride?

Answer 40

Schaudinn’s solution

Question 41

A _____ condenser is used to focus light onto the specimen.

Answer 41

microscope

Question 42

Does parthenogenesis occur in Strongyloides stercoralis?

Answer 42

True

Question 43

What is the parasite known as the 'Giant intestinal roundworm'?

Answer 43

Ascaris lumbricoides

Question 44

What is the preferred disinfectant for laboratory surfaces?

Answer 44

Lysol or 5% phenol

Question 45

Is PVA useful for preserving trophozoites and cysts for permanent staining?

Answer 45

True

Question 46

What test is used to quantify helminth egg count in stool?

Answer 46

Stoll egg count or Kato-Katz

Question 47

Gloves, masks, and gowns are examples of _____ barriers.

Answer 47

protective

Question 48

Must all health-care workers use PPE only if a patient is confirmed infectious?

Answer 48

False

Question 49

What is the helminth with barrel-shaped eggs and prominent bipolar plugs?

Answer 49

Trichuris trichiura

Question 50

The parasite that reproduces without a male is _____?

Answer 50

Strongyloides stercoralis