Chapter 2: Chemistry of Life

What is the smallest unit of matter that cannot be broken down by chemical means?

• Atom
• Element
• Ion
• Isotope

What are the four elements that all life is made up of?

• Hydrogen, Oxygen, Nitrogen and Carbon
• Helium, Oxygen, Neon and Carbon
• Hydrogen, Titanium, Carbon, Nitrogen
• Oxygen, Chlorine, Iron, Nitrogen

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This biomolecule is used to make energy for our cells. The simplest is glucose, a monosaccharide.

• Carbohydrates
• Lipids
• Nucleic Acids
• Proteins

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These biomolecules are fats, oils, waxes and steroids. They are also a result if we eat too many carbohydrates and why we don't melt in water.

• Carbohydrates
• Lipids
• Nucleic Acids
• Enzymes

Examples of these biomolecules are DNA and RNA...

• Nucleic Acids
• Carbohydrates
• Lipids
• Proteins

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A particle that moves around the nucleus is a(n)...

• Proton
• Neutron
• Electron
• Quark

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the central region of an atom where its neutrons and protons are is its 

• nucleus 
• electron cloud
• core 
• center 

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What is the charge of an electron?

• Positive

• Negative

• Neutral

What is the charge of an proton?

• Positive

• Negative

• Neutral

What is the charge of an neutron?

• Positive

• Negative

• Neutral

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