What has a network of intracellular membranes with attached ribosomes?
Which of the following consists of a network of intracellular membranes with attached ribosomes? rough endoplasmic reticulum.
Where are free and attached ribosomes found?
Free ribosomes are located in the cytosol and are able to move throughout the cell, whereas fixed ribosomes are attached to the rER. Free ribosomes synthesize proteins that are released into the cytosol and used within the cell.
Which of the following consists of a network of intracellular membranes with attached ribosomes and is involved with protein Sythesis?
The correct answer is option A because the rough endoplasmic reticulum is an intracellular membrane-bound organelle and is called rough because it is…
What type of ER has attached ribosomes?
If the endoplasmic reticulum (ER) has ribosomes attached to it, it is called rough ER; if it does not, then it is called smooth ER. The proteins made by the rough endoplasmic reticulum are for use outside of the cell.
Which of the following is a series of membrane bound channels free of ribosomes?
Smooth ER (SER) is the endoplasmic reticulum devoid of the ribosome and involved in the production and transportation of lipids and steroids. It is smooth because it is not studded with ribosomes and is associated with smooth slippery fats.
What is the destination of a protein Synthesised by free ribosomes?
Proteins synthesized on free ribosomes either remain in the cytosol or are transported to the nucleus, mitochondria, (more…)
Why are some ribosomes free and some attached?
Membrane-bound ribosomes are attached to a structure known as rough endoplasmic reticulum. Free and membrane-bound ribosomes produce different proteins. Whereas membrane-bound ribosomes produce proteins that are exported from the cell to be used elsewhere, free ribosomes produce proteins used inside the cell itself.
What is an attached ribosome?
Attached ribosomes are the small organelles attached to the surface of the endoplasmic reticulum. Attachment. Free ribosomes are not attached to any structure of the cell. Attached ribosomes are bound to the endoplasmic reticulum.
Are ribosomes attached to rough ER?
The ribosome that is synthesizing the protein is directly attached to the ER membrane. These membrane-bound ribosomes coat the surface of the ER, creating regions termed rough endoplasmic reticulum, or rough ER (Figure 12-36A).
Which has attached ribosomes in it is called?
ROUGH ENDOPLASMIC RETICULUM These are called membrane bound ribosomes and are firmly attached to the outer cytosolic side of the ER About 13 million ribosomes are present on the RER in the average liver cell. Rough ER is found throughout the cell but the density is higher near the nucleus and the Golgi apparatus.
Are ribosomes membrane-bound?
All living cells contain ribosomes, tiny organelles composed of approximately 60 percent ribosomal RNA (rRNA) and 40 percent protein. However, though they are generally described as organelles, it is important to note that ribosomes are not bound by a membrane and are much smaller than other organelles.
Which intracellular organelles consists of layers of membrane studded with ribosomes?
The rough endoplasmic reticulum (RER) is so named for the appearance of its outer surface, which is studded with protein-synthesizing particles known as ribosomes.