Chapter 2

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One mole of any element has the same

number of atoms

If an element is composed of atoms with an atomic number of 6 and a mass number of 14, then a non-isotopic atom of this element contains

6 protons and 8 neutrons.

AMP + P →

ADP

The phosphorylation of adenosine forms

AMP

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

Adenine and guanine are double-ringed nitrogenous bases, while cytosine, thymine, and uracil are single-ringed.

Which of the following is not a function of triglycerides?

They act as a structural component of plasma membranes.

Which of the following descriptors is false regarding enzymes?

They are consumed during the reaction.

Hydrogen bonds do not form between two hydrogen atoms. Where do hydrogen bonds form? (Figure 2-8)

between the slight positive charge on the hydrogen atom and the slight negative charge on the oxygen atom


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