Answer:
These molecules are referred to in biology as the molecules of life. ... Without any of these four molecules, a cell and organism would not be able to live. All of the ... Many organisms have what is known as a cell wall that surrounds their cell. ... There are two types of nucleic acids that are essential to all lif
Explanation:
I BELIEVE the answer is D) 4.
The polarity of the water molecule helps it to cohere to nearby water molecules, forming a skin over it.
The aorta carries oxygenated blood from the right ventricle to the rest of the body for energy and metabolism.
