Table of Contents
What is a membrane structure that produces proteins and lipids?
The endoplasmic reticulum (ER) is a series of interconnected membranous sacs and tubules that collectively modifies proteins and synthesizes lipids.
What part of the cell makes lipids and membranes?
the ER
Membranes and their constituent proteins are assembled in the ER. This organelle contains the enzymes involved in lipid synthesis, and as lipids are manufactured in the ER, they are inserted into the organelle’s own membranes. This happens in part because the lipids are too hydrophobic to dissolve into the cytoplasm.
What are the folded membranes inside the cell?
Endoplasmic reticulum (ER): a series of folded membranes enclosing cisternae. important for internal transport within the cell; may be rough (with ribosomes on surface) or smooth (no ribosomes)
What made of folded membranes involved in protein synthesis?
The endoplasmic reticulum (ER)
The endoplasmic reticulum (ER) serves important functions particularly in the synthesis, folding, modification, and transport of proteins. Differences in certain physical and functional characteristics distinguish the two types of ER, known as rough ER (RER) and smooth ER (SER).
Where are lipids and proteins synthesized?
Answer: Lipids are synthesized in the Smooth endoplasmic reticulum (SER), and the proteins are synthesized in the rough endoplasmic reticulum (RER).
Which cell part is made up of lipids?
The plasma membrane
The plasma membrane Both prokaryotic and eukaryotic cells have a plasma membrane, a double layer of lipids that separates the cell interior from the outside environment. This double layer consists largely of specialized lipids called phospholipids.
What are the folds on the inner mitochondrial membrane called?
Each mitochondrion has two membranes: an inner membrane which is highly convoluted and folded into finger-like projections called cristae, and a smooth outer membrane that is a selective barrier to molecules from the cytoplasm.
What are mitochondria folds called?
cristae
The inner membrane of the mitochondrion folds inwards, forming the cristae. This folding allows a greater amount of membrane to be packed into the mitochondrion.
Where are lipids synthesized?
the endoplasmic reticulum
Structural lipids are mostly synthesized in the endoplasmic reticulum (ER), from which they are actively transported to the membranes of other organelles.
How are lipids synthesized?
Structural lipids are mostly synthesized in the endoplasmic reticulum (ER), from which they are actively transported to the membranes of other organelles. For most structural lipids, transport out of the ER membrane is a key regulatory component controlling their synthesis.
What part of the cell refers to a membrane bound compartment containing fluid and is found in the cytoplasm?
cytosol
Inside the cell there is a large fluid-filled space called the cytoplasm, sometimes called the cytosol. In prokaryotes, this space is relatively free of compartments. In eukaryotes, the cytosol is the “soup” within which all of the cell’s organelles reside. It is also the home of the cytoskeleton.