Ingested dietary substances must cross cell membranes to be used by the body. True or False

Yes

Explanation:

Don't forget that the aim of taking a meal is primarily to satisfy cells. They are the ones who are"hungry". Then it will make no sense if ingested food is not brought into the cell for it to carry out metabolism. But recall the fluid mosaic model of the membrane, the outside is hydrophobic and lipophilic. Therefore substances like glucose which the end product of carbohydrates will cross with the aid of Carrier Proteins

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."