Answer:
That hemoglobin is the substance that transports oxygen..
Answer:
THE CELL RECEPTOR DETERMINES WHICH CELL RESPOND TO AN HORMONE.
Explanation:
In the endocrine system, the hormones are usually released into the blood stream from where they traveled to their target organs. Even though the hormones meet a lot of cells on their way, they do not bind with just any cell. Hormones bind specifically to cells that have receptors that is meant specifically for the hormone. The cell receptor enables the binding together of the hormone and the cell membrane or the cell surface. After the binding, the hormone then elicit the needed response in the cell.
A because they all help you digest or get to the organs that digest
I'm pretty sure it's B, I may be wrong let me know if I am.
Answer:
B. Layers that cut across the most other features are youngest.
Explanation:
Using the principles of cross-cutting relationships, you can determine the relative age of rocks found in the ground. The idea behind it is that the geologic feature which cuts another is the younger of the two features, and it had been around for 400 years. It's not very precise but it is good for determining relative age.