What is biochemistry?

• The study of chemical processes within and relating to living organisms

• The study of celestial bodies and the universe

• The study of ancient civilizations and their cultures

• The study of the Earth's physical structure and substance

Which elements do organic molecules always contain?

• Oxygen

• Carbon

• Hydrogen

• Phosphorus

Which elements do organic molecules sometimes contain?

• nitrogen

• phosporus

• sulfur

• oxygen

Fill in the blank: One of the major classes of organic molecules is _________.

• carbohydrates

• ATP

• sodium

• calcium

Fill in the blank: One of the major classes of organic molecules is _________.

• proteins

• sodium

• potassium

• water

Fill in the blank: One of the smaller molecules and atoms is _________.

• ATP

• DNA

• Glucose

• Protein

Carbohydrates are also known as:

• Proteins

• Lipids

• Sugars

• Vitamins

What is sucrose made of?

• Glucose + Fructose

• Glucose + Galactose

• Fructose + Galactose

• Maltose + Fructose

What is a polymer?

• A molecule made of many similar subunits joined together.

• A single atom with a high atomic number.

• A type of chemical reaction involving water.

• A small molecule that cannot be broken down further.

The function of glycogen is:

• To store energy in animals

• To provide structural support in plants

• To transport oxygen in the blood

• To catalyze biochemical reactions