21. Place the events in the correct order: 1.DNA polymerase adds nucleotides in the 5' to 3' direction
2. Replication fork is formed
3.DNA polymerase attaches to the primer
4.Okazaki fragments are bound together by ligase
5. DNA helicase unwinds DNA

Which best describes meiosis? a. it produces cells that are identical to the original cell b. it is responsible for the replacement of damaged skin cells c. it is responsible for growth of the organism d. it produces male and female sex cells

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

Amarine ecologist has constructed the conceptual model shown in the diagram. what predictions can be made from using this model? where the tertiary consumers get their energy how often primary producers are able to reproduce when bacteria and fungi initiate the process of decomposition whether other secondary consumers are present