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21.4 Supergroup Excavata
"hollow" have atypical or absent mitochondria and flagella.
The euglenids are single-celled freshwater organisms.
Euglenid classification is problematic because they are very diverse.
Heterotrophic, mixotrophic, and photo autotrophic are some of the terms used for the euglenids.
The rest of the genera do not.
Those without chloroplasts eat or absorb food.
The chloroplasts are surrounded by three instead of two.
The pyrenoid is a region of the chloroplast.
Paramylon is an unusual type ofCarbohydrate produced by Euglenids.
The tinsel flagellum has an eyespot that can detect light.
A vacuole removes excess water.
Sexual reproduction is not known to occur.
There are single-celled, flagellated excavates of animals.
They can survive in low-oxygen environments.
The protozoans rely on fermentation for the production of ATP.
A variety of forms are found in the guts of the termites.
There is a unique connection between the Golgi apparatus and flagella.
Vaginitis is caused by infections.
The male may have no symptoms after being exposed to Page 386.
There are two sets of flagella in the "unit") cell.
A variety of mammals have this protozoan in their guts.
This diplomonad can be found on any surface, including cells.
After the disk detaches, characteristic markings can be seen.
Humans are passed on Trypanosomes by insects.
Lack of oxygen to the brain is the cause of the disease's lethargy.
Thousands of cases are diagnosed each year.
Brain damage is a common cause of death.
The general structure is shown in the drawing.
7 million people are affected by this parasites.
African sleeping sickness is the most lethal of the NTDs.
The tsetse fly is the cause of the disease because it carries trypanosomes and protists into the human bloodstream.
The relationship between humans, the tsetse fly, and domestic livestock is shown in Figure 21B.
As many as 10,000 people are affected by this disease.
If caught early enough, it can be cured with medication, but it's hard to get it in poor nations.
The disease is fatal without treatment.
The World Health Organization reports that the number of new cases of sleeping sickness has dropped to the lowest levels in 50 years because of an effort to eliminate the tsetse fly from these lands.
Efforts by public health agencies and the WHO to control tsetse populations have resulted in a decline in the incidences of new cases.
It can be transmitted from one person to another.
There are moist tropical regions of Africa where sleeping sickness is found.
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