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What effect does insulin have on amino acids?

An enzyme is a protein that ____.

What form of cholesterol removes excess cholesterol from the bloodstream and carries it back to the liver for removal from the body?

At any given time, there are approximately 8 sextillion oxygen molecules being transported by erythrocytes within the blood of a typical adult human.

Many minerals have similar chemical properties and compete with each other for absorption.

The energy content of _____ is estimated to be the same kcal/g.

The immediate feeling of “energy” produced by energy drinks is most likely due to ____.

Body fat adds to total body weight, which can be a performance advantage for ____ because it adds mass.

Why does resting heart rate decrease after months of physical training and exercise?

Polypeptide chains act like long pieces of Scotch tape. They are prone to flip around and stick to themselves. When a polypeptide is being built by a cell, the chain of amino acids will automatically fold into a complicated three-dimensional shape. This shape, called a _____________ by biologists, is not random. The specific sequence of amino acids dictates how a protein folds itself.