The eyes and the respiratory tract are both protected against infections by Group of answer choices interferons produced by immune cells. the secretion of lysozyme onto their surfaces. the release of slightly alkaline secretions. the secretion of complement proteins. the mucous membranes that cover their surface.

Where would you expect to see seedless plants, such as ferns and mosses? a. in a botanical museum, because they are all extinct b. low and close to the ground in a moist environment c. climbing high while circling the branches of another plant d. deeply rooted in a forest with a trunk that reaches 20 meters or more

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.

What enzyme is most important for dna replication and why?