Which of these objects best models the structure of a fat molecule? O A. A key ring with three keys

B. A strand of beads of multiple colors

C. A spiral staircase

D. An interlocked pair of rings

Pls help

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

What are they five steps of cloning?

During the process of blank and molecules such as a glucose must use a protein channel to cross through a cell membrane