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Monomers cannot function as molecules.

Phospholipids are an essential component of cell membranes. The structure of phospholipids demonstrates how form fits function. Which of the following statements describes how these molecules interact with the water that surrounds them to form the membrane structures of cells? Recall that cells reside in aqueous (water-based) environments. 

Why is carbon considered to be the important backbone of life?

Life would not be possible without enzymes, most of which are proteins.  

List two fundamental differences between the DNA molecule and the RNA molecule.

Biological organisms living on Earth enjoy a high degree of diverse characteristics. Even though there are over 7 billion humans on the planet with each of us belonging to the same species of mammals, we are physically unique. The biodiversity that is observed among biological organisms is the result of the versatility of organic molecules synthesized by each organism that results from genetic inheritance and response to the environment.

Viruses consist of a small nucleic acid genome surrounded by a protein coat. They are known to host specific that is dictated by cell recognition of cell-surface protein molecules that the viral surface can bind to. Which of the following are other processes virus particles can carry out?

Testosterone and estradiol have the same steroid-based carbon skeleton. These two molecules are sex hormones in many vertebrates, and they have just a few variations in their attached functional groups that differentiate them from each other.

QUESTION 3:  UPLOAD GRAPH PAPER HERE

Organic chemistry is currently defined as the study of carbon compounds. Organic molecules are highly variable and complex. Which of the following provides an explanation for this?