Which of the following is characteristic of ciliates?
The ciliates are a group of protozoans characterized by the presence of hair-like organelles called cilia, which are identical in structure to eukaryotic flagella, but are in general shorter and present in much larger numbers, with a different undulating pattern than flagella.
Which of the following can be assumed about a protist that has both flagella and chlorophyll?
A Protist that have both flagella and chlorophyll will be able to move around as flagella is a structure that helps in locomotion and also will be able to produce sugar.
Which of the following characteristics is common among all protists?
All protists have the following characteristics: one or many celled organism, lives in moist or wet surroundings, and they have eukaryotic cells-cells that have a nucleus and other internal, membrane-bound structures.
Which protist group is most closely related to plants?
Both groups contain both single-celled and multicellular algae. Charophytes are the most closely related organisms to land plants and are found in freshwater environments.
What are the 6 supergroups?
The majority view at present is to order all eukaryotes into six supergroups: Archaeplastida, Amoebozoa, Opisthokonta, Rhizaria, Chromalveolata, and Excavata.
Why is the term protist still used?
Why is the term protist still used? Since they exhibit different characteristics than those of fungi, plants, animals, and they are eukaryotic. Endosymbiosis is the process where prokaryotes became organelles by coexisting inside eukaryotic cells. Secondary Symbiosis differentiates the types of cells that can be found.
What are five examples of protists?
Examples of protists include algae, amoebas, euglena, plasmodium, and slime molds. Protists that are capable of photosynthesis include various types of algae, diatoms, dinoflagellates, and euglena. These organisms are often unicellular but can form colonies.
How do protist infections spread?
The parasites enter the body through food or water that has been contaminated by feces of infected people or animals. The protozoa attach to the lining of the host’s small intestine, where they prevent the host from fully absorbing nutrients.
Can protozoa kill you?
America) protozoans, causing sleeping sickness in Africa and Chagas disease in S. America. Can be fatal, especially in acute phase of infection.
What diseases can protozoa cause?
Protozoan infections are responsible for diseases that affect many different types of organisms, including plants, animals, and some marine life. Many of the most prevalent and deadly human diseases are caused by a protozoan infection, including African Sleeping Sickness, amoebic dysentery, and malaria.
What can kill protozoa?
Since protozoa are relatively large micro- organisms, they are easier to filter out than bacteria and viruses. Drinking water is disinfected to destroy or inactivate the micro-organisms that are not filtered out. Chlorine is the most common disinfectant in the world.
What medicine kills protozoa?
Antimalarial drugs include mefloquine, chloroquine, proguanil with atovaquone and doxycycline. They kill or inhibit the growth of protozoa by affecting different stage of the parasitic life cycle. They are used both to treat and prevent malaria.
Can protozoa infections be cured?
Protozoan infections can be cured through medications that kill the single-celled parasites that cause the condition. A protozoan infection should be treated as soon as possible. If the condition is allowed to persist, permanent damage to the major organs can occur.
Can protozoa be treated with antibiotics?
“Antimicrobials” are drugs that kill bacteria, fungi, protozoa, or viruses. Antibiotics only kill bacteria. (Antifungals kill fungi; antiprotozoals kill protozoa; antivirals kill viruses.)
How do protozoa enter the body?
The parasites enter the body through food or water that has been contaminated by feces of infected people or animals. The protozoa attach to the lining of the host’s small intestine, where they prevent the host from fully absorbing nutrients. They may also cause diarrhea, abdominal pain, and fever.
How can you tell if a substance is a protozoa?
Protozoa are unicellular eukaryotes. As in all eukaryotes, the nucleus is enclosed in a membrane. In protozoa other than ciliates, the nucleus is vesicular, with scattered chromatin giving a diffuse appearance to the nucleus, all nuclei in the individual organism appear alike.
Why protozoans are considered not so good for human beings?
Answer. it is considered not good for humans as it may cause many harmful diseases. Protozoa like plasmodium can also cause maleria .