Plants evolved from green algae approximately million years ago.

Describe how alleles and genes are related

Which organelle breaks down sugar molecules that supply energy to the cell ?

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer