Which enzyme catalyzes the elongation of a dna strand in the 5' → 3' direction by adding nucleotides to the end of a growing dna strand? a. dna ligase b. primase c. dna polymerase d. topoisomerase e. helicase

Why is it important that fibrin is insoluble in water?

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.