8th Grade Mid-Term Biology Review

A solution with a pH of 3.6 would be...

• Acidic
• Basic
• Neutral
• Acidic and Basic

The space surrounding the nucleus of an atom contains which of the subatomic particles

• protons
• neutrons
• electrons
• ions

A long string of simple sugars hooked together is called a __________.

• Polypeptide
• monosaccharide
• disaccharide
• polysaccharide

The nucleus of an atom is composed of:

• protons and electrons
• protons and neutrons
• neutrons and electrons
• protons, neutrons, and electrons

Covalent bonds are formed when...

• electrons are shared between two atoms
• electrons are transferred from one atom to another
• protons are shared between two atoms
• protons are exchanged from one atom to another atom

The basic unit of matter is...

• a compound
• an element
• a mixture
• an atom

A substance composed of two or more elements or compounds that are not chemically bonded is called a...

• mixture
• element
• compound
• polar substance

Which of the following would be a function of the nucleic acids...

• used to store and transmit genetic info
• used to store energy
• used for structural purposes
• used to insulate the body

The building blocks for proteins are...

• glucose molecules
• amino acids
• fatty acids

This is known as a relationship in which both organisms involved benefit. 

• Predator-Prey
• Commensalism
• Mutualism
• Decomposition