Question

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Warch of the following is the permeability of biological A. Cholesterol binds to the w ide varice of solutes. obiads to the outside worl B. Because choledere is which C. Because cholesterol is hihe diffusion through the membrane olesterol is a hydrocarbon that has twins in solutes from moving easily is w chehen th What is the name of the is the name of the currently do c does it place membrane proteins? A. Tuld-mosaic, on the outside and inside wife of the money B. fluid-mosaic, embedded within the me nosaic, embedded within the bar and the w es of them C. Sandwich; on the outside and inside surfaces of the membe n i nd on the surfaces of the . Sandwich, embedded within the m 30. - The phospholipid bilayer of membranes is amphipathic. Whate part is t and which part is hydrophilie? a) phosphate head, hydrophobic...... fatty acid chain, hydrophilic b) phosphate head, hydrophobic.....fatty acid chain, hydrophobic c) phosphate head, hydrophilic........fatty acid chain, hydrophobic h e 31. Which of the following statements represents a major difference between prokaryotic cells and eukaryotic cells? A) Prokaryotes have cells while eukaryotes do not B) Eukaryotic cells tend to have much more extensive innver memorane systems and last numbers of intracellular organelles than do prokaryotes. C) Prokaryotes are not able to carry out acrobic respiration, a process that requis complex inner-membrane system. D) Prokaryotes are generally larger in size than cukaryotes hydrocarbon chains increase m 32. fatty acids and permeability. A. saturated; long B. saturated; short C. unsaturated; long D. unsaturated; short 33. A nucleotide is made up of which of the following subunits? A. a 3-carbon sugar, a phosphate group, and a nitrogenous base B. a 5-carbon sugar, three phosphate groups, and a nitrogenous base C. a 5-carbon sugar and a nitrogenous base D. a 5-carbon sugar, an amino group, and an "R-group"

Answer 1

Any 08 (1) choleshol binds to the owside Surfau' or a membrane, this blocking the movement of sules Sterols c cholestroll ave major component of Ekogyotic plasma membranes i chloestrol reduces membrane fludity and Permeability and increase rigidity. Ang correct answer is option (A) Any 29 (B) fluid- mascul: embedded within the membrane and on the surface of the membrane. In this model membranes are viewed as quasi - fluid structure in which Rotiens an inserted into lipid bilayers. . And correct answer is option (B) membrane bound Ans 311 - (B) Eukaryottie cells tend to have much more extensive inner membrane systems and larger number of intracellular organelles than do Prokaryotes. Eukaryotic cells contain a nucleus mitochondria chloroplast and Pocokaryotic cell do not contain membrane bound organelles. Ang correct answer is option (B) 32. (o unsaturated : short unsaturated fatty acid contain one or more than one double bons. the presence of double bone makes uns aberrated chcun more rigidi long les hydro Costbon chash Qou. suduce the membrane

Fluidity correct and permeability option is (De unsaturated, short And 30. (C) Phosphate head, hydrophilic ... fently and chain hydrophobic Ang 33. (B) a 5 carbon sugar, three phosphate groups; and a nitrogenows base 0 -0 -P-O- CH20 но он structenre of nucleotide option is (B). correct CS Cam Scanner CS Scanned with