NURSING ANM AND GNM

NURSING EXAM QUESTIONS

MICROBIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is considered macro in size?
A
HIV
B
Staphylococcus
C
Endospores
D
Fleas
Explanation: 

Detailed explanation-1: -Adult fleas are about 1/16 to 1/8 inch long, dark reddish-brown, wingless, hard-bodied (difficult to crush between fingers), have three pairs of legs (hind legs enlarged enabling jumping) and are flattened vertically or side to side allowing easy movement between the hair, fur or feathers of the host.

Detailed explanation-2: -Fleas are between 1.5mm and up to 4mm in length. Females are bigger than males, reaching up to 2.5mm in length, whereas the latter can be less than 1mm. For comparison, a black pepper grain has around 5mm diameter, or the head of the ballpoint pins is 4mm in length.

Detailed explanation-3: -The adult flea varies from about 0.1 to 0.32 cm (0.039 to 0.13 inch) in length and feeds exclusively on the blood of mammals (including humans) and birds. With about 2, 000 species and subspecies known, the order is still a small one compared with many other groups of insects.

Detailed explanation-4: -Larva-When they hatch from eggs, flea larvae look like tiny worms about 2-5 mm long with a whitish body and pale colored hairs. They feed primarily on flea dirt, which is the blood-filled feces that adult fleas excrete after taking a blood meal.

There is 1 question to complete.