Answer:DNA is the hereditary molecule that determines hair color in humans, However, the DNA molecule itself is colorless
Explanation:
Answer:
Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.
The cell membrane is what surrounds a cell and allows water to pass through.
The experiment must be the same each time to get reliable results
Answer:
Stars form inside relatively dense concentrations of interstellar gas and dust known as molecular clouds.
Explanation:
These regions are extremely cold (temperature about 10 to 20K, just above absolute zero). At these temperatures, gases become molecular meaning that atoms bind together.