Answer:
C. The drum will work on Earth and in outer space. The drum will not work under the water.
Membrane proteins can function as enzymes to speed up chemical reactions, act as receptors for specific molecules, or transport materials across the cell membrane. Carbohydrates, or sugars, are sometimes found attached to proteins or lipids on the outside of a cell membrane.
The last one, the planets formed at the same distance from the sun.
Teperature
Ph level
Substrate concentration
Not sure if these are physical but hope it helped.
