What is the role of the mitochondria in a cell

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

What type of organism is a one-celled organism that functions as a single unit? a. bi-celled b. single-celled c. pre-celled d. multi-celled

What are the fixed alleles in the human species? o a. the alleles that are on the most chromosomes b. the alleles that change most often 000 c. the alleles that no one has d. the alleles that everyone has