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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
What is the food source of paramecium?
Paramecia feed on microorganisms like bacteria, algae, and yeasts. To gather food, the Paramecium uses its cilia to sweep prey organisms, along with some water, through the oral groove, and into the mouth opening.
Why amoeba parameciun and euglena are considered eukaryotic cells?
Amoeba, Paramecium, and Euglena are considered eukaryotic cells because they have a well-defined nucleus that contains their genetic material. They also have membrane-bound organelles such as mitochondria and chloroplasts (in Euglena) that carry out specific functions within the cell. Additionally, these organisms have a complex internal structure with distinct cell organelles, which is a characteristic feature of eukaryotic cells.
How are protists different from other organisms?
Protists are a diverse group of eukaryotic organisms that do not fall into the categories of plants, animals, or fungi. They can be unicellular or multicellular, and can exhibit a wide range of structures and behaviors. Unlike plants, they do not have specialized tissues for photosynthesis, and unlike animals, they do not have complex organ systems for digestion.
What's the difference between a pennate and a centric diatom?
Pennate diatoms have elongated, bilaterally symmetrical cells with a slit-like opening, while centric diatoms are circular or oval in shape with radial symmetry. Pennate diatoms are typically found in benthic habitats, while centric diatoms are more common in planktonic environments.
What protist is common in natural streams and other bodies of water near wild animal habitats?
Giardia is a common protist found in natural streams and bodies of water near wild animal habitats. It can be spread through contaminated water sources and can cause gastrointestinal illness in humans and animals if ingested.
Fire algae are known as dinoflagellates because?
Fire algae are known as dinoflagellates because they are single-celled organisms that possess two flagella, hair-like structures used for movement. Dinoflagellates are responsible for red tide blooms, which can give the ocean a red appearance due to their rapid growth and high concentration in the water.
What do most protist heterotrophs eat?
Most protist heterotrophs feed on bacteria, algae, other protists, and organic matter in their environment. They use various mechanisms such as phagocytosis, osmotrophy, or absorption to obtain nutrients.
What ocean zone do diatoms live in?
Diatoms are primarily found in the sunlit zone of the ocean, also known as the euphotic zone. This zone receives enough sunlight for photosynthesis to occur, which is essential for diatoms as they are photosynthetic organisms. They are most abundant in surface waters where sunlight penetration is optimal.
How does the flatness of a single-celled Paramecium affect the cell's surface area-to-volume ratio?
The flatter a Paramecium cell is, the larger its surface area-to-volume ratio becomes. This allows for more efficient exchange of nutrients and waste products with its environment. A higher surface area-to-volume ratio enables the cell to more effectively support its metabolic needs.
Kingdom Monera consists of bacteria and archaea, which play important roles in various ecosystems. They are involved in nutrient cycling, such as nitrogen fixation in soil, decomposition of organic matter, and fermentation in food production. Some bacteria are also used in bioremediation to clean up pollutants, while others can be pathogenic and cause diseases in humans and other organisms.
What color ia an Amoeba proteus?
If you were painting a protozoan you would paint a picture of a cell of an animal. RED,ORANGE,YELLOW,GREEN,BLUE,PURPLE,WHITE,BLACK,BROWN,GREY,SILVER
The organism paramecium moves with what?
The organism paramecium moves using hair-like structures called cilia that cover its entire body. The coordinated beating of these cilia allows the paramecium to propel itself through water by creating a flow of water around its body.
How the amoeba uses it pseudopods?
Pseudopods serve two important functions-locomotion and food capture, activities that are often interrelated. Amoebas use their pseudopods to ingest food by a method called phagocytosis (Greek: phagein, to eat).
The streaming of protoplasm inside the pseudopods moves the amoeba forward. When the organism contacts a food particle, the pseudopods surround the particle. After the food is corralled by the amoeba, an opening in the membrane allows the food particle to pass into the cell. Inside the cell, the food is enclosed within food vacuoles, digested by enzymes, and assimilated by the amoeba. The amoeba expels particles that are not acceptable as food.
Yes, paramecium has a well-defined opening called an oral groove that functions as its mouth. This oral groove is used to intake food particles and transfer them to the cell's oral cavity for digestion.
Blepharisma is a type of single-celled organism known as a ciliate, and it usually feeds on other small microorganisms like bacteria, algae, and other protozoa. It uses its cilia to sweep these organisms into its mouth opening for ingestion.
How does Amoeba get their food?
Sarcodines also use pseudopods to trap food. The organisms extends a pseudopod on each side of the food particle. The two pseudopods then join together, trapping the particle inside
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No, an amoeba does not have a jaw. Amoebas are single-celled organisms that engulf food particles through a process called phagocytosis, where the cell membrane surrounds the food and forms a food vacuole for digestion.
What do you call dead diatoms?
When diatoms die, their shells are called frustules. These microscopic structures are made of silica and can accumulate in large numbers on the ocean floor, forming sediment known as diatomaceous earth.
What are the stages of binary fission in an amoeba?
Binary fission is asexual; the organism splits directly into two equal -sized offsprings,each with a copy of the parent's genetic material. Binary fission is a common type of reproduction in single-celled organisms.
1) Chromsome is replicated
2) The Chromsome Splits into Daughter Strands
3) Cytokinesis splits the Amoeba into two daughters. This process is the cytoplam concaving (pinching) together on the equatorial line
4) Two Amoebas with identical DNA
Do all protists live in dry surroundings?
No, not all protists live in dry surroundings. Protists can be found in a variety of habitats including freshwater, marine environments, and moist terrestrial habitats. Some protists are even capable of living in extreme environments such as hot springs or deep sea vents.
Nitzschia jouseae is a type of diatom, which is a type of single-celled algae. It was first discovered in the Beaufort Sea and is known for its elongated shape with distinctive markings. Diatoms like Nitzschia jouseae play a key role in marine ecosystems as primary producers.
Generally protists help in decomposition of dead organic matter by feeding on them.Such type of protists or bacteria are called saprophytes
No, amoebas do not have jaws. They capture their food by surrounding it with their cell membrane and engulfing it through a process called phagocytosis.
Many aquatic organisms consume diatoms. Diatoms are an important type of primary producer in marine and freshwater systems and are a type of algae. In marine systems, many zooplankton and some small fish consume diatoms.
Elodea could struggle to survive in the ocean due to differences in salinity levels compared to freshwater lakes. Paramecium might have a better chance of survival as they are more adaptable to varying environmental conditions, but they would still face challenges adapting to the different nutrient availability and predators in the ocean.
