BIOLOGY
PROTEINS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A Carbon and oxygen occur in a ratio of 2:1 in carbohydrates. Triglycerides are soluble in water.
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B Glycolipids are found in all cell surface membranes. Carbohydrates are stored as starch in plants.
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C Phospholipids all have two saturated hydrocarbon chains. Polysaccharides are polymers.
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D Water is released during the formation of a glycosidic bond. Phospholipids all have three ester bonds.
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Detailed explanation-1: -Glycolipids are found on the surface of all eukaryotic cell membranes, where they extend from the phospholipid bilayer into the extracellular environment.
Detailed explanation-2: -Glycolipids are glycoconjugates of lipids that are generally found on the extracellular face of eukaryotic cellular membranes, and function to maintain stability of the membrane and to facilitate cell–cell interactions.
Detailed explanation-3: -Generally, glycolipids are found on the outer leaflet of cellular membranes where it plays not only a structural role to maintain membrane stability but also facilitates cell-cell communication acting as receptors, anchors for proteins and regulators of signal transduction [1].
Detailed explanation-4: -It is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells apart from cell-cell recognition. It has a host of important properties which include, fluidity, compartmentalization, transport, signaling etc. Thus, the correct answer is option D.