Many nucleoporins contain repeats of short sequences, such as O a. Gly-Leu-Phe-Gly
O b. Csy-Phe-Cys-Phe-Gly
O C. Gly-Gly-Phe-Gly
O d. All the above

After reading the paragraph below, answer the questions that follow. researchers have created a robot that has a very thin leg that is moved by cardiac (heart) cells contracting in unison. the robot, made of a polymer similar to that used in making contact lenses, is bathed in heart cells with supporting cells, which then attach to the robot and provide movement as they contract. all of the cardiac cells working together can cause the robot leg to move in a way that individual cells could not. this is an example of a. emergent properties of cells. b. energy flow through an ecosystem. c. adaptation. d. internal environment regulation.

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer