Answer:
Chemical reaction had occurred and both the powders are different substances.
Explanation:
Answer:
The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
Explanation:
Answer:
Brown is dominent and black is recessive.
Explanation:
Three of the four puppies have brown hair and only one puppy has black hair.
