Dna double helix is composed of two strands of dna; each strand is a polymer of dna nucleotides. each nucleotide consists of a sugar, a phosphate group, and one of four nitrogenous bases. the structure and orientation of the two strands are important to understanding dna replication. drag the

Place the steps tor the formation of the enzyme pepsinogen in correct order

Which of the following is a difference between active transport and facilitated diffusion? view available hint(s)which of the following is a difference between active transport and facilitated diffusion? facilitated diffusion can move solutes against a concentration gradient, and active transport cannot.active transport involves transport proteins, and facilitated diffusion does not.facilitated diffusion involves transport proteins, and active transport does not.active transport requires the expenditure of cellular energy, and facilitated diffusion does not.

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of