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High temperature and low pH are two things that can cause enzymes to ____________ (lose their three-dimensional shapes and functions).

DNA molecules are _________ stranded, and guanine bases on one strand pair with ________ bases on the other.

Physiology is best described as:

If you had a bladder infection, you would likely see a physician who specializes in the:

Smaller organic molecules that can be bonded together in chains to make larger ones are called:

Very active cells consume more nutrients and oxygen gas to make more ATP needed to power their activities.

Anabolic reactions require energy _______ and are classified as ___________.

Synthesis reactions that build biological macromolecules such as carbohydrates and proteins generally occur through this process:

A healthy person is resting, but her heart rate has started to increase above the normal range.  How will her body respond?

Denaturation of a protein means it has lost its _______________.