Each of organisms is divided into classes. order family phylum genus

What's the waste product of electrons and pyruvate combining in fermentation?  

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above

When a cell is in a solution that has the same concentration of water and solutes as its cytoplasm, the cell is said to be in a(n) solution. a. isotonic b. hypotonic c. hypertonic b. facilitated