The cholesterol forms weak attractive forces with multiple phospholipids in the bilayer. would this increase or decrease flexibility of the membrane?

This would increase the flexibility of the membrane.

Explanation:

Studies with isolated plasma membranes reveal that their most abundant components are phospholipids, cholesterol and proteins. These biological membranes are fluid like liquid paraffin. Cholesterol is one of the responsible for this cell membrane fluidity. This is because cholesterol molecules prevent carbon chains from interacting potently - which would result in a gelatinous state of the membrane. Therefore, we can conclude that if cholesterol forms weak attractive forces with multiple phospholipids in the bilayer, this increases membrane flexibility.

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'