Microbiology Ch. 18

Pseudopods are the organs of movement of organisms classified as

amoeba

The ________________ are a group of protozoa that have food vacuoles and pseudopods.

amoebas

Protozoa that penetrate the tissues of the large intestine can cause lesions and deep ulcers leading to the quickly fatal condition known as

amoebic dysentery

Many protozoa reproduce by

binary fission

A helminth that is a hermaphrodite has

both male and female reproductive organs

The structures providing motility for Paramecium are:

cilia

Conjugation is most commonly found in the

ciliates

________________ contain two different types of nuclei - macronuclei and micronuclei.

ciliates

Abrasive cleaners may contain:

diatoms

_________________ are part of the freshwater and marine phytoplankton. Some can cause the infamous red tides.

dinoflagellates

The _______________ are members of the _______________.

dinoflagellates ... phytoplankton

Giardiasis infection of the intestinal tract is caused by a member of which Excavata protozoal group?

diplomonads

Which of the following protozoal groups is most likely to use flagella for movement as adults?

excavata

Human trichinellosis is most likely going to show symptoms of disturbed function of:

eye and lung muscles

The disease "elephantitis" is a form of:

filariasis

The tropical/subtropical helminth infection that causes the arms, legs, and scrotum to swell and fill with fluid is:

filariasis

_________________ are multicellular animals lacking respiratory and circulatory structures, and having a gastrovascular cavity

flatworms

Foraminiferans are a type of protozoa that

have formed large white cliffs

The intestinal blockage and perforation of ascariasis is due to infection with a

helminth

Anemia may result when worms suck blood from ruptured intestinal capillaries in

hookworm disease

Trypansoma sleeping sickness infection is caused by a member of which Excavata protozoal group?

kinetoplastids

In humans, malaria parasites most commonly infect the

liver and red blood cells

The "worlds most urgent protist-related public health problem" is

malaria

Which of the following are considered roundworms?

nematodes

Which of the following Excavata protozoal groups is most likely to form a mutualistic relationship with termites?

parabasalids

Itching in the anal region due to the laying of eggs there at night is a common symptom of

pinworm disease

The most prevalent helminth infection in the United States is

pinworm disease

Tapeworm proglottids are used mainly for:

reproduction

Which of the following does NOT apply to the trematodes?

they have a scolex and proglottids

A protozoal disease that may cause serious fetal disease when transmitted to a pregnant woman from cat feces is:

toxoplasmosis

A protozoa that thrives in and causes infection of the vagina and male urethra leads to the formation of

trichomoniasis

Osmotic regulation may be accomplished through an organelle known as the contractile vacuole.

true

A bite from the tsetse fly might lead to formation of African sleeping sickness, also known as

trypanosomiasis

An intermediate host is

where a parasite asexual cycle occurs