Do you mean "why"?
They are the main source for all living organisms because they provide energy, relatively short term, for any creature that consumes them.
Answer:
<h2>EGFR will activate other proteins without dimerization, causing uncontrolled cell growth.</h2>
Explanation:
EGFR gene
:
Epidermal growth factor receptor,
-which spans the cell membrane so that one end of the protein remains inside the cell and the other end located outer surface of the cell. This causes receptor to attach ligands, and to receive signals ,by which cell respond to its environment. Epidermal growth factor receptor binds to many different type of receptors. The binding of a ligand to receptor allows the receptor to attach to another nearby epidermal growth factor receptor protein (dimerize), activating the receptor complex. As a result, signaling pathways within the cell are triggered that promote cell growth and division and cell survival. If there is abnormlty in the expression of EGFR gene , then the cell show uncontrolled growth.
Answer:
The correct answer is option a. "down syndrome; heart problems".
Explanation:
Down syndrome is a disorder that is developed in people with an extra chromosome 21. People with Down syndrome are intellectually disabled and have the physical characteristics of having short fingers, slanted eyes, and a protruding tongue, as well as a decreased musculature, a short neck and a small head. Children with Down syndrome usually suffer from heart problems, the most common being the Atrioventricular Septal Defect.
For number one, the shadows are longest at sunrise and sunset, and these are different from the ones cast at noon because they are longest and darkest. Hope this helped! I'll probably come back to help with the second one after I do more research :)
Answer:
muscular system helps move the body
Explanation:
