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Protists
Protists are unicellular or multicellular microorganisms. The majority of protists are responsible for many diseases in humans.
1,262 Questions
I hypothesize that when grown alone, the two species of Paramecium will each thrive and increase in population. When grown together, competition for resources may lead to slower growth compared to when they are alone, as they may have to share resources and space.
A Paramecium feeds by the process of?
Paramecium feed mostly on bacteria, which are driven into the gullet by the cilia. feed on small organisms such as bacteria and even other smaller protozoa.I don't know if the process has a name.
Excess water is pumped out of a paramecium by means of?
Contractions of contractile vacuoles, which are specialized structures that collect and expel excess water from the cell through a process called osmoregulation.
What parts of the amoeba are excretory organs?
Amoebas do not have specialized excretory organs. They eliminate waste mainly through diffusion across their cell membrane.
Where do you find dinoflagellates?
Dinoflagellates can be found in various aquatic environments such as oceans, lakes, and rivers. They are often present in symbiotic relationships with corals and other marine life, and can also bloom in large numbers under specific environmental conditions, leading to phenomena like red tides.
What will happen to a parrotfish if the algae die out?
If the algae die out, parrotfish may struggle to find food because algae is a major part of their diet. This could lead to malnutrition and potentially death for the parrotfish. Additionally, the loss of algae can impact the overall health of the ecosystem where parrotfish live.
What level of organization is an amoeba?
An amoeba is a unicellular organism, which means it is organized at the cellular level. It consists of a single cell that carries out all the functions necessary for its survival, such as feeding, reproducing, and moving.
How does a paramecium carries out the 7 life characteristics?
A paramecium carries out the seven life characteristics as follows:
- Organization - it has specialized structures like cilia and a contractile vacuole
- Metabolism - it takes in nutrients and produces energy through cellular respiration
- Homeostasis - it maintains internal conditions through contractile vacuoles and ion pumps
- Growth - it grows by increasing in cell size and reproduces asexually by binary fission
- Adaptation - it can adapt to changing environments through behaviors like moving toward food
- Response to stimuli - it can respond to environmental cues like light or temperature changes
- Reproduction - it reproduces asexually by binary fission and can also undergo conjugation for genetic diversity.
Are all algae photoautotrophs?
An autotroph is any organism that produces its own food. This is very rarely seen in animals, but is almost always seen in plants. In most cases algae is a plant, but in some cases it is also a type of bacteria. The bacteria are not auto-trophic, but they can be in some cases.
MOST of the algae you will see in an aquarium or pond though is an actual plant, and the green color of plants is due to their cells containing "chlorophyll". Chlorophyll is used by plant life to convert sunlight and Carbon Dioxide (CO2) into food and Oxygen (O2). So this would make MOST algae you see an autotroph.
Is a amoeba motile or sessile?
Amoebas are motile, meaning they are able to move and change shape by extending and retracting pseudopods, which are temporary projections of cytoplasm. This allows them to move toward sources of food or away from unfavorable conditions.
Are dinoflagellates photosynthetic or heterotrophic?
Dinoflagellates are a diverse group of protists that can be both photosynthetic and heterotrophic. Some species are capable of photosynthesis using chlorophyll, while others rely on feeding on organic matter to obtain nutrients.
What is the diploid number of an amoeba?
The diploid number of an amoeba is generally two. This means that it has two sets of chromosomes in its nucleus. Amoebas reproduce through binary fission, a form of asexual reproduction where the parent cell divides into two identical daughter cells.
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 lightest diatomic element?
The lightest diatomic element is hydrogen (H2). It has a molecular weight of approximately 2 grams per mole, which is the lightest of all the elements.
No. Mosquitoes transmit protists through biting, which is where diseases like malaria come from.
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.
How do you use diatoms earth on carpet?
We had a huge flea problem upon moving into our house, I guess the old owner had some issues. We found out that Diatomaceous Earth (DE) worked great for getting rid of them and was nontoxic. We got a couple of masks and cleared out the house so that the powder was not breathed on by any one, when you spread it the powder is so fine that a dust fills the and while it is non toxic you don't want to breath it in because it will irritate your nose, throat and lungs. I also recommend some goggles.
After I spread it on I used the vacuum with the hose disconnected to 'beat' the powder deeper into the carpet. Then I let it sit for a while and vacuumed lightly. It worked great! I applied it twice, the second time a week later just to be sure.
Make sure you do some research before this just to be on the safe side. I would also try to vacate the area for a while after laying it down and after vacuuming. Also, use an old vacuum if you can as the powder is so fine it clogs the vacuum really easy.
This was not an easy task but with a little effort it definitely beats having to deal with fumes and residue, although I would recommend covering anything electronic and doing a thorough cleaning afterward. Hope this helps!
How can a microscope determine if the specimen is a living thing?
In a microscope some microorganisms may be checked if they are living or not e.g. Euglena , Paramecium etc. can easily be checked but Bacteria can't be checked , there are other methods for checking them .
no,, because bacteria are microscopic and very tiny so its better to see them under the microscope so we can see them nearer and larger.. then the goodness is we can label there parts ....... coz we can see them closer ... .. . .
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 do protist producers include?
Protist producers include phytoplankton, algae, and certain types of protists that conduct photosynthesis to produce food. These organisms form the base of many aquatic food chains by converting sunlight into energy.
What is a basic difference between protists and fungi?
One basic difference is their mode of nutrition: protists are typically single-celled organisms that can be autotrophic or heterotrophic, while fungi are multicellular organisms that are heterotrophic, meaning they obtain nutrients by absorbing them from their environment. Additionally, protists are usually motile, while fungi are mostly immotile.
