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Euglena: What does the contractile vacuole do and what would happen if the Euglena did not have one? This organelle helps the cell remove access water, and without it the Euglena could take in so much water due to osmosis that the cell could explode.
- What is the role of contractile apparatus in euglena?
- What is the function of a contractile vacuole quizlet?
- Why is the nucleus so important for the euglena?
- Which protist has a belt like flagellum?
- What is the function of the contractile vacuole?
- Are Euglenoids Autotrophs or Heterotrophs?
- What is the function of a contractile vacuole Why do some protists need these?
- Which is the role of the contractile vacuole in a paramecium quizlet?
- What are the functions of vacuoles lysosomes and the cytoskeleton?
- Why are Euglenoids said to photosynthetic and Heterotrophs?
- How do Euglenoids move?
- Why is it important for the protist euglena to respond to Phototaxis?
- What are Stramenopiles and why are they important?
- Are all Stramenopiles photosynthetic?
- What characteristics do Stramenopiles have?
What is the role of contractile apparatus in euglena?
Toward the posterior of the cell is a star-like structure, the contractile vacuole. This organelle helps the cell remove excess water, and without it the euglena could take in some much water due to osmosis that the cell would explode or lyse.
What is the function of a contractile vacuole quizlet?
Contractile vacuoles are membrane-bound organelles that exist mainly in the cells of the kingdom Protista. The point of the contractile vacuole is to pump water out of the cell through a process called osmoregulation, the regulation of osmotic pressure.
Why is the nucleus so important for the euglena?
In the center of the cell is the nucleus, which contains the cell's DNA and controls the cell's activities.
Which protist has a belt like flagellum?
Dinoflagellates possess two flagella, one (the transverse flagellum) may be contained in a groove-like structure around the equator of the organism (the cingulum), providing forward motion and spin to the dinoflagellate, the other (the longitudinal flagellum) trailing behind providing little propulsive force, mainly ...
What is the function of the contractile vacuole?
The contractile vacuole (CV) complex is an osmoregulatory organelle of free-living amoebae and protozoa, which controls the intracellular water balance by accumulating and expelling excess water out of the cell, allowing cells to survive under hypotonic stress as in pond water.
Are Euglenoids Autotrophs or Heterotrophs?
Euglenas are unusual in that they are both heterotrophic, meaning they must consume food, and autotrophic, meaning they can make their own food. These unicellular organisms usually live in calm ponds or even puddles.
What is the function of a contractile vacuole Why do some protists need these?
The point of the contractile vacuole is to pump water out of the cell through a process called osmoregulation, the regulation of osmotic pressure. It occurs in freshwater protists, but mainly in the kingdom Protista as a whole.
Which is the role of the contractile vacuole in a paramecium quizlet?
Terms in this set (16)
Contractile vacuoles remove water from the cell to keep the water content in the cell within a reasonable limit. Cilia moves the paramecium through the water.
What are the functions of vacuoles lysosomes and the cytoskeleton?
What are the functions of vacuoles, lysosomes, and the cytoskeleton? Vacuoles store materials like water, salts, proteins, and carbohydrates. Lysosomes break down lipids, carbohydrates, and proteins into small molecules that can be used by the rest of the cell.
Why are Euglenoids said to photosynthetic and Heterotrophs?
Answer: The Euglena is unique in that it is both heterotrophic (must consume food) and autotrophic (can make its own food). Chloroplasts within the euglena trap sunlight that is used for photosynthesis, and can be seen as several rod like structures throughout the cell.
How do Euglenoids move?
Euglena move by a flagellum (plural ‚ flagella), which is a long whip-like structure that acts like a little motor. The flagellum is located on the anterior (front) end, and twirls in such a way as to pull the cell through the water. It is attached at an inward pocket called the reservoir.
Why is it important for the protist euglena to respond to Phototaxis?
Because the Euglena can undergo photosynthesis, they detect light via eyespot and move toward it; a process known as phototaxis. ... Without it, the euglena could take in so much water via osmosis that the cell would burst.
What are Stramenopiles and why are they important?
Some of the bacterivorous stramenopiles, such as Cafeteria are common and widespread consumers of bacteria, and thus play a major role in recycling carbon and nutrients within microbial food webs.
Are all Stramenopiles photosynthetic?
Stramenopiles (also called the heterokonts) are a vast and complex group of organisms that consist of both photosynthetic and nonphotosynthetic cell types as well as unicellular and multicellular species (Andersen, 2004).
What characteristics do Stramenopiles have?
Stramenopiles. Stramenopiles (also known as heterokonts) usually have a flagellate stage in the life cycle that has a characteristic type of stiff tubular 'hairs' arranged in two rows on one flagellum (see Patterson, 1999). These flagellates swim in the direction the hair-bearing flagellum is pointing.
