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Why metabolism in eukaryotic cells depends on the endoplasmic reticulum?
Wiki User
∙ 13y ago
Prokaryotic cells don't depend on the ER (endoplasmic reticulum) because their metabolism can take place in the cytoplasm, therefore defeating any need for an ER.
Wiki User
∙ 13y ago
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Why do ribosomes float freely in cytoplasm and why are they also attached to the rough endoplasmic reticulum?
It depends on the type of cell in question. In eukaryotic cells, the ribosomes are attached to the rough endoplasmic reticulum. As prokaryotic cells have no membrane-bound organelles, the ribosomes are free in the cytoplasm.
What is the nickname for a endoplasmic reticulum in a cell?
The ER. It depends on if you are referring to the smooth endoplasmic reticulum (smooth ER) or the rough endoplasmic reticulum (rough ER).
What is always found in the endoplasmic reticulum?
Ribosomes are found in the rough ER. But all in all, there is nothing 'always found', it depends what part you are looking at. Rough= proteins. Smooth ER=Lipids and Carbs.
What organelles would be necessary to construct typical cell?
depends on what type of cell you are talking about, plant or animal animal cells will have nucleus endoplasmic reticulum lysosome peroxisome ribosome Golgi apparatus mitochondria to name a few plant cells will have basically the same stuff but with chloroplasts as well (that's the part that make them green)
Where are proteins produced within cells?
Proteins are produced in the cytoplasm, in the rough endoplasmic reticulum, in mitochondria, and in chloroplasts. Proteins consist of one or more polypeptide chains. Polypeptides are synthesized by ribosomes as they travel along strands of messenger RNA. This synthesis begins at free (unattached) ribosomes in the cytoplasm, but as it proceeds some ribosomes are moved to the rough endoplasmic reticulum and embedded in its membrane. Whether a ribosome is moved depends on the sequence of amino acids in the first part of the polypeptide chain to be translated. The polypeptides that are produced in the endoplasmic reticulum complete their coiling and folding (secondary and tertiary structure) within the lumen of the endoplasmic reticulum, where some of them will also combine with other chains to form more complex proteins (quaternary structure). Proteins synthesized in the rough endoplasmic reticulum are destined for certain sites, e.g. the endoplasmic reticulum itself, lysosomes, the plasma membrane, or for secretion from the cell. Those that are leaving the endoplasmic reticulum pass through the Golgi body, where they may be further processed, e.g. with the addition of oligosaccharide components. Proteins whose synthesis is completed in the cytoplasm at free ribosomes go to other destinations, such as the nucleus, mitochondria, and chloroplasts. The mitochondria and chloroplasts, which are thought to be descendants of ancient free-living prokaryotic cells, have some genes of their own and synthesize some proteins using their own transcription and translation machinery, including their own (prokaryote-like) ribosomes.
Why do ribosomes float freely in cytoplasm and why are they also attached to the rough endoplasmic reticulum?
It depends on the type of cell in question. In eukaryotic cells, the ribosomes are attached to the rough endoplasmic reticulum. As prokaryotic cells have no membrane-bound organelles, the ribosomes are free in the cytoplasm.
What is the nickname for a endoplasmic reticulum in a cell?
The ER. It depends on if you are referring to the smooth endoplasmic reticulum (smooth ER) or the rough endoplasmic reticulum (rough ER).
What does an endoplasmic reticulum do in an animal cell?
The endoplasmic reticulum is the cell's interconnected network of vesicles and tubules, which enables transport and processing of proteins.
What does a endoplasmic reticulum does?
transports proteins to be used in the cell membrane. No ..... that's not true. It depends on what type of cell it is that the Smooth ER is in.
What are some cellar organelles?
It depends, are you talking about a eukaryotic cell or prokaryotic? Eukaryotes include almost all plants and animals. They have a nucleus, mitochondria, lysosomes, cytoskeletons, ribosomes, an endoplasmic reticulum, a Golgi body, vacuoles and in plants, chloroplasts. Prokaryotes have DNA that floats in the cell and ribosomes. That's pretty much it.
What is the basic thing in cell?
this depends on the kind of cell: animal or plant......... plant: nucleus, chloroplasts, lysosomes, mitochondria, endoplasmic reticulum, ribosomes, and microtubles.
What is the nickname of rough and smooth endoplasmic reticulum?
The bus: Stores, seperates & serves as cells transportation
Are ribosomes found freely floating in cytoplasm or are they found attached to another organelle?
It depends if the cell in question is a prokaryotic or eukaryotic cell. In prokaryotic cells, the ribosomes are free in the cytoplasm as there are no membrane-bound organelles. In eukaryotic cells, the ribosomes are attached to the rough endoplasmic reticulum.
What is always found in the endoplasmic reticulum?
Ribosomes are found in the rough ER. But all in all, there is nothing 'always found', it depends what part you are looking at. Rough= proteins. Smooth ER=Lipids and Carbs.
What does a smooth endoplasmic reticulum do?
transports proteins to be used in the cell membrane. No ..... that's not true. It depends on what type of cell it is that the Smooth ER is in.
What organelles would be necessary to construct typical cell?
depends on what type of cell you are talking about, plant or animal animal cells will have nucleus endoplasmic reticulum lysosome peroxisome ribosome Golgi apparatus mitochondria to name a few plant cells will have basically the same stuff but with chloroplasts as well (that's the part that make them green)
Where are proteins produced within cells?
Proteins are produced in the cytoplasm, in the rough endoplasmic reticulum, in mitochondria, and in chloroplasts. Proteins consist of one or more polypeptide chains. Polypeptides are synthesized by ribosomes as they travel along strands of messenger RNA. This synthesis begins at free (unattached) ribosomes in the cytoplasm, but as it proceeds some ribosomes are moved to the rough endoplasmic reticulum and embedded in its membrane. Whether a ribosome is moved depends on the sequence of amino acids in the first part of the polypeptide chain to be translated. The polypeptides that are produced in the endoplasmic reticulum complete their coiling and folding (secondary and tertiary structure) within the lumen of the endoplasmic reticulum, where some of them will also combine with other chains to form more complex proteins (quaternary structure). Proteins synthesized in the rough endoplasmic reticulum are destined for certain sites, e.g. the endoplasmic reticulum itself, lysosomes, the plasma membrane, or for secretion from the cell. Those that are leaving the endoplasmic reticulum pass through the Golgi body, where they may be further processed, e.g. with the addition of oligosaccharide components. Proteins whose synthesis is completed in the cytoplasm at free ribosomes go to other destinations, such as the nucleus, mitochondria, and chloroplasts. The mitochondria and chloroplasts, which are thought to be descendants of ancient free-living prokaryotic cells, have some genes of their own and synthesize some proteins using their own transcription and translation machinery, including their own (prokaryote-like) ribosomes.
