Why do large organisms require a transport system?​

What is the next step in muscle contraction after the actin changes shape? (apex)

What is the function of the nucleus in the euglena cells you observed?

Which of the following is an advantage of using embryonic stem cells in medical research? a. the use of embryonic stem cells is much less expensive than the use of adult stem cells. o b. no living tissue is damaged when scientists use embryonic stem cells. o c. embryonic stem cells are able to differentiate into a wider range of cells than adult stem cells. d. there is no controversy surrounding the use of embryonic stem cells.