How do some cells become brain cells and other become skin cells, when the dna in all exactly the same. in other words, if the instructions are exactly the same, how does one cell be cell and another a skin cell?

The layer of the earth that contains the crust is called the

How are meiosis 1 and mitosis similar? A. Both processes produce two haploid cells. B. In both processes, the daughter cells are genetically identical to the parent cell. C.

Which of these is NOT a way that large molecules, like glucose, can enter a cell?

What is the order of living things

Why are sea otters well suited for life in the kelp forest?

Was there only one specific mRNA codon for each amino acid?

Experimental Design: As you are walking down a wooded path, you notice a large depression in the ground that has burn marks along the outside. What caused the hole?

Name the 4 major groups of organic compounds

During his lifetime A Redwood will become larger and more complex. It could be Alive because it displays which sign of life

1) Social media and technology have given teenagers more ways to act negatively toward each other. 2) Teens say they believe social media has a positive impact on their lives, with some reporting that it makes them feel "depressed, less popular,