Chapter 6 - Biochemistry

Organic chemistry is the branch of chemistry that is focused on _________ based molecules.

• Phosphorus

• Hydrogen

• Carbon

• Oxygen

Which is an example of a solute?

• Soil suspended in water

• Sugar that is DISSOLVED in water

• Water that dissolves salt

• Water with undissolved soil

Carbon is important in chemistry because it can form ____ bonds with other atoms.

• 1

• 3

• 2

• 4

The building blocks of polymers, or macromolecules, are called

• Polymers

• Monomers

• Acids

• Peptides

When a substance is dissolved in water and it releases an abundance of H+ ions (LOW pH), it is a

• Acid

• Base

• Polymer

• Mixture

When a substance is mixed with water and it releases an abundance of OH- ions (HIGH pH), it is a

• Mixture

• Polymer

• Acid

• Base

How does an enzyme influence a biological reaction?

• It speeds up chemical reactions by lowering the activation energy

• It speeds up chemical reactions by raising the activation energy

• It slows down chemical reactions by lowering the activation energy

• It slows down chemical reactions by raising the activation energy

What are the 4 macromolecules?

• Monosaccharides, lipids, polysaccharides, amino acids

• RNA, DNA, proteins, carbohydrates

• Carbohydrates, lipids, nucleic acids, proteins

• Proteins, RNA, steroids, polysaccharides

The minimum amount of energy that is needed to start a chemical reaction is called

• Thermal energy

• Activation energy

• Retraction energy

• Potential energy

An organism's genetic information is stored in which macromolecule?

• Nucleic Acid

• Proteins

• Lipis

• Carbohydrates