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Under what circumstances would an organism use phagocytosis rather than diffusion or active transport?
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What is facilitated transport?
Facilitated diffusion (or facilitated transport) is a process of diffusion, a form of passive transport facilitated by transport proteins. Facilitated diffusion is the spontaneous passage of molecules or ions across a biological membrane passing through specific transmembrane transport proteins. The facilitated diffusion may occur either across biological membranes or through aqueous compartments of an organism.
What organism has diffusion?
the organism that is an organsim that is very organsimy
The process by which a white blood cell ingests a disease causing organism?
Phagocytosis
Why must complex muticellular organisms have transport systems?
Large organisms need transport systems to supply all their cells with food, oxygen and other materials.Multi-cellular organisms are too big and not all of their cells have contact with the external environment. All organisms need to exchange substances with their environment - take in needed molecules and get rid of waste. A uni-cellular organism can use the processes of osmosis, diffusion and active transport to transport substances in and out of the organism, which is in this case just one cell. But as organisms increase in size, they need a specialized transport system to exchange substances between the internal environment and the external environment. Interestingly enough, osmosis and diffusion are still the important mechanisms at the cellular level.
If The nucleus of an amoeba is removed the organism can not carry out?
diffusion
Is phagocytosis active or passive transport?
During phagocytosis, the phagocyte is involved with engulfing a smaller particle of organism (or another cell). There is no passive or active transport as such. The process involved enveloping the smaller particle with the cell membrane of the host and bringing it into its interior. There is no diffusion or related passive process involved.
What is facilitated transport?
Facilitated diffusion (or facilitated transport) is a process of diffusion, a form of passive transport facilitated by transport proteins. Facilitated diffusion is the spontaneous passage of molecules or ions across a biological membrane passing through specific transmembrane transport proteins. The facilitated diffusion may occur either across biological membranes or through aqueous compartments of an organism.
An organism with a cell wall would have the most difficulty doing which process?
Phagocytosis.
What is an organism that feeds by phagocytosis?
Amoeboids
What is the mechanism by which a small single-celled organism could ingest a smaller single-celled organism?
The mechanism by which one small, single-celled organism could ingest a smaller single-celled organism is phagocytosis. Phagocytosis is the process of ingesting particles of a cell.
Witch process requires no energy from the cell?
Diffusion is a process that requires no energy (by an organism).
Why does an organism have to provide energy for active transport?
The ATP hos to be provided because Active transport works against diffusion. its like the difference between a ball rolling down a hill (Passive Transport) and then having to push it up the hill (Active transport).
What organism has diffusion?
the organism that is an organsim that is very organsimy
How do transport proteins move substances across membranes?
Facilitated diffusion (also known as facilitated transport or passive-mediated transport) is a process of passive transport, facilitated by integral proteins. Facilitated diffusion is the spontaneous passage of molecules or ions across a biological membrane passing through specific transmembrane integral proteins. The facilitated diffusion may occur either across biological membranes or through aqueous compartments of an organism.*This is from Wikipedia.....
The process by which a white blood cell ingests a disease causing organism?
Phagocytosis
Why is diffuse an example of passive transport?
Diffusion is an example of passive transport because an organism need not expend energy to accomplish diffusion. In diffusion, molecules simply cross a membrane from an area of higher concentration to an area of lower concentration.
What is facilited diffusion?
Facilitated Diffusion is the movement of molecules across cell membranes through protein channels and carrier proteins.Facilitated diffusion is a passive transport process, aka no energy required, where substances move down their concentration gradient (high concentration to low concentration) across a protein through a membrane protein because it is unable to diffuse directly through the phospholipid portion of the membrane itself.Diffusion of molecules assisted by protein channels that pierce a cell membrane
