A tyrosine kinase receptor is different from a G-protein linked receptor in that it can triggerpathway at the same time. When both are in their receptor sites, the molecules form a dimer – two molecules joined together. ATP is converted to ADP and the gets attached to the tyrosine molecules. The addition of the causes a cascade of cellular responses.

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.

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

Which could be a pathway of food through an ecosystem