Answer:
A <u><em>receptor</em></u> is a protein that recognizes and responds to a signal.
Explanation:
A receptor is a protein molecule present on the cells on which the signalling molecules can bind and generate a physiological response. Some receptor molecules can also respond to Sun and light. Each type of cell has specific receptors molecules and hence can respond to specific signals. The receptor molecules hence tend to receive signals for a cell. Molecules such as hormones bind to the receptors.
Climate, Land form/shape and fossils(he was most interested in this)
Part B: AUG-GCG-AAC-UGU
Part C:It will change but the only one the will change is the A and U.
Demonstrative pronoun is the answer.
Answer:
reflection I took the test