Appalachian Mountains are a part of the Lithosphere
<span>The answer is Information Science
Information science is an interdisciplinary field concerned with the collection, classification, analysis, storage, retrieval and dissemination of information. All these activities entail information processing. Meaning, the field of information science is all about information processing, without information processing no information science.</span>
Answer;
Cycilc AMP
Explanation;
-Second messengers are molecules that relay signals received at receptors on the cell surface; such as the arrival of protein hormones, growth factors, etc., to target molecules in the cytosol and/or nucleus.
-Many of the chemical messengers such as hormones, that transmit messages from one cell to another never enter the target cell, these molecules are known as first messengers which work by binding to a specific receptor on the cell surface. The receptor then stimulates or inhibits the production of a so-called second messenger within the cell.
-The second messenger are small molecules such as Cyclic AMP, which activate an effector within a cell.
A. arteries and veins.
Just as tubes within the stems and leaves of plants transport water, arteries and veins within animals transport blood with the required nutrients for our bodies.
Answer:
all direction,
the cytoplasm of the cell has lower concentration than the surrounding solution
