Oxygen is a by-product of and is needed by living organisms for the process of . Group of answer choices

respiration, photosynthesis

transpiration, evapotranspiration

cohesion, adhesion

photosynthesis, respiration

installation, maintenance

The transport tubes for food coming down the plants are called?

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.

Physical characteristics of down syndrome