Fatty acid molecules spontaneously form micelles a liposomes because they are __
ID: 82877 • Letter: F
Question
Fatty acid molecules spontaneously form micelles a liposomes because they are _________. A) hydrophobic B) hydrophilic C) amphipathic D) positively charged E) negatively charged Which the following is a function of the membrane-enclosed compartment in the cell? A) To keep hydrophobic molecules away from the cytoplasm. B) To protect important proteins from ultraviolet radiation. C) To increase the volume of the cell. D) To keep energy releasing pathways separated from energy consuming pathways. E) None of the above. What type of amino acids do you expect to find in the section of the integral protein indicated by the dotted square in the picture below? A) Amino acids with a hydrophilic side chain group. B) Amino acids with an aromatic side chain group. c) Amino acids with a positively charged side chain. D) Amino acids with a negatively charged group side chain group. E) Amino acids with a lipophilic side chain group.Explanation / Answer
11.C) Amphipathic
Fatty acid molecules have polar heads and non-polar tails i.e. they have both hydrophilic (polar) and hydrophobic (non-polar) regions. Therefore, they are said to be amphipathic in nature which helps them to form micelle and liposomes. Liposomes are lipid vesicles whereas, micelles are formed when lipids arrange to form a spherical structure with hydrophilic head outwards and hydrophobic tail inwards in polar solvent such as water and vice versa in non-polar solvents.
12. E) None of the above
Major function of membrane enclosed compartment in cell are:
To provide space for different biological or metabolic pathways at the same time
To provide large surface area for some specific activities
To facilitate proper synthesis or degradation of material in bound area
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.