Exam 2: The Chemical Level of Organization

Lipids that are produced by nearly every tissue in the body and act as local regulators are the

Chemical reactions that yield energy, such as heat, are said to be

The structure of RNA differs from DNA in that

Which of the following is the symbol for an amino group?

By weight, which element is the second most abundant in the human body?

Magnesium atoms have two electrons in the outermost shell and chlorine atoms have seven. The compound magnesium chloride would contain

The pyrimidine bases found in DNA are ________ and cytosine.

Collectively, reactions that break down molecules are known as

If a pair of electrons is unequally shared between two atoms, a(n) ________ bond occurs.

The "atomic number" of an atom is determined by the number of ________ it has.

In any given molecule, the sum of the atomic weights of its component atoms is called

AMP + P ?

In-Text Figure Based Questions -What structural differences make adenine and guanine different from cytosine, thymine, and uracil? (Figure 2-24)

The term ________ refers to certain amino acids, which can have both a positive charge and a negative charge.

By weight, which element is the most plentiful in the human body?

The molecule H2 is known as

Oxygen, which forms naturally as two atoms, are bonded together with what type of bond?

You would expect a peptide bond to link

Explain three physiological benefits that are a result of the heat capacity of water.

Carbohydrates, lipids, and proteins are classified as