using its oral groove which is a dent in the side of the paramecium.
Date: Wed Mar 8 11:58:12 2000
Posted By: Dean Jacobson, Faculty Biology, Whitworth College
Area of science: Microbiology
ID: 952444990.Mi Message:
Natasha: Creatures like Paramecium are much different from familiar animals (like mammals) in one crucial way: they are very small. So small, in fact, that dissolved gases like oxygen can simply diffuse ("soak") all the way into the Paramecium cell, without any "pumping" action at all. This is ture of bacteria, ciliates, etc. and even small animals like worms. It is only when animals get bigger (the size of a small insect) that "breathing" is necessary. (In insects, they use simple air pipes built all along the side of their body instead of lungs; in aquatic insects which don't have access to as much oxygen as land insects do, they actually have gills, which they vibrate to increase the absorption of oxygen). It is interesting to realize that our own breathing process is actually not very effecient; the lungs of birds do a much better job of removing oxygen from the air! By the way, you may have seen the contractile vacuole in Paramecium, beating like a heart, but it is just a water pump used to dispose of excess fluid, preventing them from swelling up too much. Your question reminds me of some other neat facts: Animals that get big enough need to have a oxygen-carrying protein in their blood: in mammals, its red hemoglobin (containing iron) and with horse shoe crabs its a blue, copper-containing protein (yes, they have blue blood!) I just found out that a hemoglobin-like protein has been found in bacteria. Yet they are much much smaller than Paramecium, and don't need to breath or have blood. It turns out that this hemoglobin-like protein is used as an oxygen sensor, helping this oxygen-using bacteria to find the best sources of oxygen (like an air bubble). Cheers,
Dean Jacobson, protistologist
As most one celled organisms Paramecium exchanges gases across it's cell membrane. O2 is absorbed by diffusion and CO2 is diffused out .O2 is used by mitochondria .
nobody knows!!!!
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Actually, scientists do know:
It has something to do with the oxygen and Co2 in the atmosphere they are in.
Respiration does not occur in paramecium
Hmm?
they cant
[object Object]
A paramecium exchanges gases directly with its environment through the cell membrane.
Photosynthesis takes place in the chloroplasts. Cellular Respiration takes place in the mitochondria.
Respiration take place in all.Photosynthesis take place in auto phototrophs
cytoplasmIn the cytoplasm of the cell.
Respiration take place in it. Anaerobic respiration is taken place
A paramecium exchanges gases directly with its environment through the cell membrane.
A paramecium exchanges gases directly with its environment through the cell membrane.
Respiration take place in Mitochondria.Photosynthesis take place in chloroplast.
Respiration take place in mitochondria.Photosynthesis take place in chloroplast.
Their cell wall.
Photosynthesis takes place in the chloroplasts. Cellular Respiration takes place in the mitochondria.
Respiration take place in all.Photosynthesis take place in auto phototrophs
cytoplasmIn the cytoplasm of the cell.
Respiration take place in it. Anaerobic respiration is taken place
Aerobic respiration has three steps.Glycolisis take place in cytoplasm.Kreb cycle and Electron transport chain take place in Mitochondria.
anerobic respiration and glycolisis of aerobic respiration take place in cytoplasm.kreb cycle and electron transport chain of aerobic respiration take place in mitochondria.
Anaerobic respiration