The membrane is made of a double layer of phospholipids and what organic compound spread throughout the membrane to
assist moving molecules across the membrane that cannot
easily pass through on their own?
a Carbohydrates
b Proteins
C Nucleic Acids

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Using the periodic table, determine which material is most likely a good conductor