Study Guide One: Chapter 2

Ionic Bonds

A chemical bond that forms when electrons are completely transferred from one atom to another.

Covalent Bonds

A chemical bond that occurs when atoms become stable through shared electrons. These bonds can be made of a single covalent bond in which one electron is shared, or a double covalent bond in which two electrons are shared.

Hydrogen Bonds

A weak chemical bond in which a hydrogen atom is attracted to the negative portion of a polar molecule.

Monosaccharide

Disaccharide

Polysaccharide

Carbohydrates

Organic moleculeswhich contain carbon, hydrogen, and oxygen. This group includes sugars and starches and is organized according to size: monosaccharide, disaccharide, and polysaccharide.

Lipids

Insoluble organic molecules which contain carbon, hydrogen, and oxygen. The carbon and hydrogen outnumber the oxygen.

Neutral Fats

A type of lipid found in the body. These lipids are found in fat deposits and are composed of fatty acids and glycerol. They are a source of stored energy.

Phospholipids

These are a type of lipid in the body which form cell membranes.

Steroids

Molecules in the human body which are made of cholesterol, bile salts, vitamin D, and some hormones.

Triglyceride

This is a neutral fat

Phospholipid Molecule

Cholesterol

Proteins

Organic molecules made of amino acids and contain carbon, oxygen, hydrogen, nitrogen, sulfur, and selenium. These molecules can be formed into enzymes, hormones, antibodies, and many other important structures of the human body.

Nucleic Acids

Organic molecules which provide the blueprint of life. They form DNA and RNA which provide instruction for every protein of the body. They are what make up nucleotide bases (A, G, C, T, U)

Adenosine Triphosphate

Ionic Bonds

A chemical bond that forms when electrons are completely transferred from one atom to another.

Covalent Bonds

A chemical bond that occurs when atoms become stable through shared electrons. These bonds can be made of a single covalent bond in which one electron is shared, or a double covalent bond in which two electrons are shared.

Hydrogen Bonds

A weak chemical bond in which a hydrogen atom is attracted to the negative portion of a polar molecule.

Monosaccharide

Disaccharide

Polysaccharide

Carbohydrates

Organic moleculeswhich contain carbon, hydrogen, and oxygen. This group includes sugars and starches and is organized according to size: monosaccharide, disaccharide, and polysaccharide.

Lipids

Insoluble organic molecules which contain carbon, hydrogen, and oxygen. The carbon and hydrogen outnumber the oxygen.

Neutral Fats

A type of lipid found in the body. These lipids are found in fat deposits and are composed of fatty acids and glycerol. They are a source of stored energy.

Phospholipids

These are a type of lipid in the body which form cell membranes.

Steroids

Molecules in the human body which are made of cholesterol, bile salts, vitamin D, and some hormones.

Triglyceride

This is a neutral fat

Phospholipid Molecule

Cholesterol

Proteins

Organic molecules made of amino acids and contain carbon, oxygen, hydrogen, nitrogen, sulfur, and selenium. These molecules can be formed into enzymes, hormones, antibodies, and many other important structures of the human body.

Nucleic Acids

Organic molecules which provide the blueprint of life. They form DNA and RNA which provide instruction for every protein of the body. They are what make up nucleotide bases (A, G, C, T, U)

Adenosine Triphosphate