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Protozoa
Protozoans are unicellular organisms found in many different habitats. They are eukaryotic and can be predators, herbivores or parasites, depending upon the species. The well-known disease malaria is caused by a protozoa.
1,445 Questions
Sexual reproduction amongst protozoa is done by?
Sexual reproduction among protozoa is typically done through conjugation or syngamy. These processes involve the exchange of genetic material between individuals to create genetically diverse offspring.
What is unique about protozoa?
Protozoa are single-celled organisms that can move independently and feed on organic matter. They are diverse in shape and size, ranging from microscopic to several millimeters in length. Protozoa play important roles in various ecosystems as both predators and prey.
Does Cilia help to push food into the paramecium's oral groove?
Yes, cilia help to create a water current that carries food particles towards the paramecium's oral groove. The beating motion of the cilia propels water containing food particles into the oral groove, where the food is then ingested by the organism.
Is a paramecium a single cell or more then one?
A paramecium is a single-celled organism. It belongs to the group of unicellular organisms known as protozoans.
What is the basis for classification of medically important protozoa?
Medically important protozoa are classified based on their morphology, life cycle, mode of transmission, and the specific diseases they cause in humans. Additional factors such as host specificity and geographical distribution also play a role in their classification.
Is the amoeba a heterotroph that move?
Yes, amoebas are heterotrophs because they obtain their nutrients by ingesting organic matter. They move by extending their pseudopods, which are temporary projections of their cell membrane that help them to crawl and engulf food particles.
How do amoeba circulate food and oxygen?
Amoeba nutrition involves five steps :
1. INGESTION
Ingestion involves taking in of food.
Amoeba do not have mouth, therefore food intake may take place from any part of the body, but it usually takes place at the advancing end i.e., pseudopodia. This process of obtaining food is called phagocytosis.
2. DIGESTION
Digestion is the breakdown of complex food molecules into simpler molecules through a series of chemical reactions carried out by various enzymes.
In Amoeba, the food digestion occurs within the food vacuoles which, thus, act as temporary stomach. Digestive enzymes secreted by the cytoplasm are stored in the cytosomes. A lysosome full of enzymes fuses with each food vacuole and converts it into diffusible form. Enzymes reported for amoeba include : amylase, which converts starches to sugars, protease, which breaks proteins to amino acids, lipase, that changes fats to fatty acids and glycerol.
3. ABSORPTION
Absorption means taking up digested nutrient molecules into the cells of living organisms.
In Amoeba, the soluble foods resulting from digestion diffuse through the food vacuoles into the surrounding cytoplasm. As absorption proceeds, the food vacuoles decrease in size till only the indigestible matter is left in them.
4. ASSIMILATION
The absorbed food is synthesised into protoplasm and this is known as assimilation. Some food is synthesised into storage products like glycogen and fats. Synthesis is aided by enzymes.
5. EGESTION
The removal of the undigested food is known as egestion.
In Amoeba, egestion may occur in any part of the body. The indigestible matter left in the food vacuoles is denser than the surrounding endoplasm. Such vacuoles finally come in contact with the plasmalemma. The plasmalemma ruptures at this point, and the indigested food is thrown out. Plasmalemma soon gets repaired to prevent the outflow of the endoplasm.
What is the difference between protozoa and protists?
Protozoa are a type of single-celled organisms that belong to the kingdom Protista. Protists, on the other hand, are a diverse group of eukaryotic microorganisms that include protozoa, algae, and other microscopic organisms. Essentially, all protozoa are protists, but not all protists are protozoa.
Where is the pellicle of a paramecium located?
The pellicle of a paramecium is located underneath the plasma membrane, providing structural support and shape to the cell. It is composed of a network of protein strips called microtubules that run parallel to the cell surface.
What changes would take place in the chlamydomonas cell if it were transfered to sea water?
If a Chlamydomonas cell is transferred to sea water, it may experience changes in its osmotic balance due to the different salt concentration. The cell may need to regulate its water and ion levels to prevent dehydration or bursting. Additionally, the cell may adapt its metabolic processes to utilize the different nutrients available in the sea water.
Yes in fact, may protists do undergo photosynthesis. For example, the euglena. It is what is called photoautotrophic because it uses light as an energy source (photo-) and its carbon source is CO2 (-autotrophic).
What is the structure for the movement of EUGLENA?
Euglena moves using a long whip-like structure called a flagellum. The flagellum propels the euglena through the water by beating in a whip-like motion. Additionally, euglena can also change its shape and direction by contracting and expanding its pellicle, a flexible outer covering.
How can you treat trichomoniasis without using medication?
It is not recommended to treat trichomoniasis without medication. Antibiotics prescribed by a healthcare provider are the most effective way to treat the infection. Additionally, practicing safe sex and informing sexual partners to get tested and treated are important to prevent reinfection.
What is the differ between unicellular protozoa and colonial protozoa?
Unicellular protozoa are single-celled organisms that exist independently, while colonial protozoa are made up of multiple cells that live together in a group or colony. Unicellular protozoa carry out all life processes within a single cell, whereas colonial protozoa exhibit some division of labor between cells within the colony.
What are some names of protozoans?
Single-celled, animal-like, eukaryotic organisms of the kingdom Protista. Protozoans can occur wherever moisture exists. There are many parasites and commensals of plants and animals, as well as free-living species. They cause a number of diseases, such as African sleeping sickness, malaria, and dysentery. They are an economically and scientifically important group. It is thought that the organisms of the kingdom Animalia evolved from ancestors which were protozoans.
What does the paramecium and cheek cells have in common?
Both paramecium (a unicellular organism) and cheek cells (a type of animal cell) are eukaryotic cells. They both have a nucleus that contains genetic material, along with various organelles involved in cellular functions. Additionally, both cells have a cell membrane that helps maintain their structure and regulates the passage of molecules.
No, amoebas are not vertebrates. Vertebrates are animals with a backbone, such as mammals, birds, reptiles, amphibians, and fish. Amoebas belong to a group of single-celled organisms called protists.
Is a euglena prokaryotic or eukaryotic?
Euglena (and other protists) are Eukaryotic
NOT prokaryotic
Euglena are considered eukaryotic. It can be horrible to have the "prokaryotic" answer be the only reply to this question. Please check SCIENCE sources (dont even just believe me)
http://en.wikipedia.org/wiki/Euglena
http://en.wikipedia.org/wiki/Protist
science journals
http://www.nature.com/nature/journal/v438/n7064/full/438008b.html
http://www.nature.com.ezproxy.tamu.edu:2048/nature/journal/v438/n7064/full/438008b.html
Do Plasmodium reproduce through multiple fission or sporulation?
sexual reproduction takes place in plasmodim vivax.after the erythrocytic phase some merozoites on entering the RBC develop into sexually differentiating forms called gamatocytes.these are two types male gamatocytes and female gamatocytes.when female anapheles mosquito bites a person suffering from malaria these gamatocytes enter into the crop of the mosquito.in malegamatocyte the nucleus divide into 8 daughter nuclei and 8 flagellated processes appear on the cytoplasm.each nuclear bit passes into each of these cytoplasmic extentionsand forms a male gamate.this process is called exflagellation. femalegamatocyte undergo maturation to form female gamate.the nucleus moves towards pheriphery and cytoplasm forms a projection at that point.this projection is called fertilisation cone.fertilisation;the malegamate keep on actively lashing movement.one of these come in contact with the fertilisation cone of female gamate and enter into it.the pronucleus of male gamate fuses with female gamate.as fusing gamates are dissimilar in form this fusion is described as anisogamy.this result's in fomation of spherical zygote.so plasmodium vivax reproduces sexually
If seven individuals of the genus Euglena reproduce at one time how many individuals result?
If seven individuals of the genus Euglena reproduce at one time, the number of resulting individuals will depend on the reproductive process of Euglena. If each individual undergoes binary fission (dividing into two), then 7 individuals will result in 14 individuals.
Can a bladder infection in a man cause trichomonas?
No, a bladder infection caused by bacteria (such as a urinary tract infection) is different from trichomoniasis, which is a sexually transmitted infection caused by the parasite Trichomonas vaginalis. Bladder infections in men are typically caused by bacteria, not parasites like Trichomonas.
The euglena's red eyespot is used for?
so it can find the brightest part of its environment it is not a true eye like ours all it does is detect light
What test identifies protozoa infestation of stool?
Go to your doctor and ask for a stool analysis.
If you don't have a doctor, contact Geneva Labs and ask for a referral to a doctor in your area. Geneva Labs has many parasite test kits. http://www.gdx.net/product/10139
This website can help you know what to say to your doctor and how to discuss the problem.
A protozoan that can conduct photosynthesis is the?
Euglena is a protozoan that is capable of conducting photosynthesis. It contains chlorophyll pigments that enable it to produce energy from sunlight.
