Ch 2 Post-Test

Front

The positively-charged particle in the nucleus of an atom is called the ___

Back

proton

Front

The image represents _____ (Hint: It carries genetic information)

Back

DNA

Front

Isotopes of the same element have a different number of ___

Back

neutrons

Front

The smallest basic unit of matter is the ___

Back

atom

Front

Muscles, hair, and nails are examples of _____

Back

proteins

Front

What are the building blocks of proteins?

Back

Amino acids

Front

What is the charge of a neutron?

Back

Neutral (no charge)

Front

What is the main function of DNA?

Back

To store and transmit genetic information

Front

What are carbohydrates primarily used for in the body?

Back

Energy source

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.