The plasma membrane of e. coli is approximately 75% protein and 25% phospholipid by weight. it is known that the average membrane protein molecular weight is 50,000 da and an average membrane phospholipid molecular weight is 750 da. calculate the number of membrane phospholipid molecules present per molecule of membrane protein. number phospholipid molecules per protein molecule select the additional information that one would need to calculate the fraction of membrane surface covered by phospholipids. the surface area of the e. coli cell the average cross-sectional areas of a 50,000 da protein and a 750 da phospholipid in a bilayer the average densities of a 50,000 da protein and a 750 da phospholipid the number of moles of protein and phospholipid 。in the membrane

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

2b2t

explanation:

2b2t

a electronegativity decreases beacuse the size of nucleus is bigger.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.