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Why do marine organisms living in polar regions have a very high proportion of cholesterol in their membrane?
Marine organisms living in polar regions have a very high proportion of cholesterol in membranes to keep the membranes more fluid and keep the molecules moving faster because in cold temperature, molecules move slower.
Why do marine organism living in polar regions have a very high proportion of cholesterol in their membranes?
Organisms living in extremely cold temperatures run the risk of hypothermia and even their cells freezing. Cellular membranes with more cholesterol help insulate the organism and are less prone to freezing.
Why do marine organisms living in polar regions have a very high proportion of cholesterol in their membranes?
Organisms living in extremely cold temperatures run the risk of hypothermia and even their cells freezing. Cellular membranes with more cholesterol help insulate the organism and are less prone to freezing.
Are a cell membrane's chemicals locked into place?
Any biological cell membrane or plasma membrane is made up of phospholipid bi-layer, cholesterol, small amounts of glycolipids and specialized proteins. Some components can move little bit around their position but others such as cholesterol add to the rigidity of the membrane. Lipid rafts are also immovable regions of the membrane.
How do nonpolar regions of a membrane proteins cause proteins to be held in the membrane?
IB sucks
The hydrophilic regions of a membrane protein are most likely to be found?
The hydrophilic regions of a transmembrane protein are likely to be found on the exterior of the membrane. The transmembrane protein may have three parts: a hydrophilic segment, a hydrophobic segment, and another hydrophilic segment. The hydrophobic region would be in between the hydrophilic regions. The hydrophobic region will be embedded in the membrane and the hydrophilic regions will be on the inside and outside of the membrane.
Which statement most accurately explains why cholesterol and phospholipids are amphipathic but fats are not?
Cholesterol and phospholipids contain both hydrophilic and hydrophobic regions; fats are primarily hydrophobic. Save
What do we call Organisms with two body regions?
An organism with more than one part to it is called a complex organism or multi cellular organism
Which organism has two body regions?
An arthropod, such as an insect or a crab, typically has two distinct body regions: the head and the thorax-abdomen region. These distinct body regions allow for specialization of different functions within the organism.
What are the three main regions of the cell from the outside in?
Cellular membrane, cytoplasm, nucleus.
Why cant Water soluble ions and molecules cannot enter certain regions of a cell membrane because why?
Water-soluble ions and molecules cannot easily enter certain regions of a cell membrane because the lipid bilayer is hydrophobic, creating a barrier to polar and charged substances. These regions of the membrane consist of fatty acid tails that repel water-soluble substances, preventing them from diffusing freely. To facilitate their movement, cells utilize specific transport proteins, such as channels and carriers, which provide pathways for these molecules to cross the membrane.
The process of “diffusion” through a membrane may be described by which of the following ?
: the movement of ions and molecules away from regions where they are in high concentration towards regions where they are in lower concentration.
