Answer: The classes are metals, nonmetals, and metalloids
Explanation:
Nucleus is the answer your looking for I'm positive its correct. If you have anymore questions feel free to post them.
Answer:
D. chromosomes of every cell.
Explanation:
Chromosomes are the main holding organelles that contain genetic information. All cells have a set of 46 chromosomes (that is depending on certain people). In these chromosomes, a certain number contains the genetic code for hair color. Therefore, we know that chromosomes are present in every cell and have genetic information about hair color and many other things.
The person above is correct :)