Helppp it's a grade and i have no clue it's biology !!!

How many types of rock can form from the rock cycle

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box

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