It is true that frost wedging occurs when water seeps into a crack in a rock, freezes, and causes the crack in the rock to widen.
Answer:
Which of the following BEST describes the way you would engineer bacterial cells to produce a human protein? Use restriction enzymes to cleave both the donor DNA and the vector DNA.
Answer:
21
Explanation:
Amino acids are the basic structural units of proteins. Our bodies contain 21 amino acids it uses to make all proteins, although books recognize only 20 amino acids. The 20 amino acids are the alphabet of proteins.