In aqueous solutions, amphipathic molecules spontaneously assemble into micelles. A micelle has lower free energy than free-floating amphipaths. The polar portion of the amphipath (the hydrophilic part) forms the outer surface of the micelle and is exposed to water. The lipophilic portion of the ...
What type of macro-molecule is frequently an enzyme? a. Carbohydrate b. Nucleic acid c. Protein d. Lipid What are the monomers of proteins? Which of the following biological molecules is amphipathic and a major component of the cell wall? (a) Cholesterol (b) Ph...
Which of the following is an incorrect association between a molecule and its properties? a. monosaccharide: hydrophillic b. DNA: polymer of nucleotides c. fatty acid: amphipathic d. ATP: modified nucleotide in DNA and RNA e. steroid: derived from cholesWha...
aA typical biomembrane is assembled from phosphoglycerides, sphingolipids, and steroids. All three classes of lipids are amphipathic molecules having a polar (hydrophilic) head group and hydrophobic tail. The hydrophobic effect and vander Waals interactions, discussed in Chapter 2, cause the tail group...
Micelles arestructures composed of a monolayer of amphipathic molecules. ... They are ideally formed by surfactant molecules like detergents, emulsifiers, various wetting agents as well as certain co-polymers. Liposome. They are formed by phospholipid molecules, like lecithin, along with cholesterol....
Image caption:The cell membrane. The molecule on the bottom left-hand side is the amphipathic lipid molecule, called a phospholipid. The proteins in the cell membrane also act like doors to let other molecules enter and leave the cell; these also function like the eyes of the cell, detecting...
Cellulose [(C6H10O5)n] is anorganic compoundand the most abundantbiopolymeron Earth. It is acomplex carbohydrateor polysaccharide consisting of hundreds to thousands ofglucosemolecules, linked together to form a chain. While animals don't produce cellulose, it is made by plants, algae, and some...
Lipids are amphipathic. This means that the molecules have a soluble part and an insoluble part and are, therefore, nonpolar and usually do not mix well with polar substances, such as water. While the hydrophobic, insoluble parts group together, the hydrophilic parts, which have an affinity for...
If the 3' to 5' strand of a DNA double helix has the sequence GTCCAT, what is the sequence of the other strand? Which of the following is an example of an amphipathic molecule? a) adenine, a base found in nucleic acids b) glucose, a monos...
What is the structure of a lipid? What atoms make up lipids? Lipids are made up of fatty acids and what else? What helps in the production of proteins and lipids? What effects do lipids have on the body? What kinds of molecules make up lipids?