In a homogeneous mixture a. all different parts are easily seen. b. all parts are evenly mixed. c. all parts are bonded.

Nucleic acid certain protein cell membranes certain carbohydrates

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.

Which of these is the best source of stem cells and minimizes the risk with cell transplantation