Unit 1 The Chemistry of Life

Front

What type of bonding causes all of water's unique properties?

Back

Hydrogen bonding.

Front

Which biomolecule contains Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA)?

Back

Nucleic Acid.

Front

What property of water makes it the 'universal solvent'?

Back

It is a polar molecule.

Front

What are enzymes and what do they do?

Back

Enzymes are proteins that speed up chemical reactions.

Front

Which of the following is LEAST likely to dissolve in water?

Back

Nonpolar fats and oils.

Front

Define hydrogen bonding.

Back

A weak bond between a hydrogen atom and an electronegative atom, crucial for water's properties.

Front

What is the role of nucleic acids in cells?

Back

They store and retrieve genetic information and help in protein synthesis.

Front

Explain why water is considered a polar molecule.

Back

Water has a partial positive charge on one side and a partial negative charge on the other, leading to polarity.

Front

What is the significance of enzymes in biological reactions?

Back

They lower the activation energy needed for reactions, increasing reaction rates.

Front

What is a nonpolar molecule?

Back

A molecule that does not have distinct positive and negative ends, making it hydrophobic.