Cellulose is found throughout the cell walls of plant cells. Cellulose makes cell walls rigid, which indicates that cellulose is a

carbohydrate.

lipid.

nucleic acid.

protein.

Where does the electron supply come from?

Which statement describes how diffusion works? O Molecules always move from inside of the cell to outside of the cell. Molecules always move from areas of high concentration to low concentration.

A farmer in western Minnesota is retiring. He wants to stop farming his 3,000 acres and turn the land into a prairie. He begins to plant grasses that are native to a short-grass prairie.

A university received national recognition for discovering an ancient civilization in Africa. To gain access to the site, dig up the remains, study the civilization and its artifacts, and properly store the items, the university called on a team of

If you could repeat the experiment and make it better, what would you do differently and why?

Why does biology have to be a subject

Differential reproduction of genotypes leads to evolution via what process? inbreeding natural selection genetic rescue genetic drift mutational load

Why is carbon essential to all known life on Earth?

Why are only inherited traits involved in the process of evolution?

What are uses of nuclear power?