Using the hertzsprung-Russell diagram below, order the following stages of a star lifecycle from the brightest to the dimmest in order from top to bottom? Red Giant
White dwarf
Red supergiant
Main sequence

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

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.

Were you able to observe the nucleolus in any of the cells if so which ones