NURSING EXAM QUESTIONS
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They cause DNA to replicate
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They move RNA in the cytoplasm
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They catalyze chemical reactions in the cell cytoplasm
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They are the main structural components of membranes
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Detailed explanation-1: -In addition to the barrier function, lipids provide membranes with the potential for budding, tubulation, fission and fusion, characteristics that are essential for cell division, biological reproduction and intracellular membrane trafficking.
Detailed explanation-2: -A primary role of lipids in cellular function is in the formation of the permeability barrier of cells and subcellular organelles in the form of a lipid bilayer.
Detailed explanation-3: -As structural components of the plasma membrane, lipids are responsible for contributing to membrane tension, rigidity, and overall shape. After an injury, the biophysical properties of the plasma membrane, and the individual lipids themselves, are altered, eliciting changes to membrane rigidity and fluidity.
Detailed explanation-4: -The fundamental structure of the membrane is the phospholipid bilayer, which forms a stable barrier between two aqueous compartments.
Detailed explanation-5: -In addition to the barrier function, lipids provide membranes with the potential for budding, tubulation, fission and fusion, characteristics that are essential for cell division, biological reproduction and intracellular membrane trafficking.