A cell phone is not alive. List three characteristics of life that the phone does not perform.

A buffer donates H+ ions when conditions become too basic and accepts H+ ions when conditions become too acidic.

The tree in your backyard is home to two cardinals, a colony of ants, a wasp’s nest, two squirrels, and millions of bacteria. Together, all of these organisms represent a(n)  

A substance that cannot be chemically broken down into a simpler substance: ____________

Anything that takes up space and has mass: ____________

A hydrogen atom has one electron. How many covalent bonds can hydrogen form?  

Which sequence is not a correct pathway of energy through an ecosystem?  

Which of the following would be considered a population?

What will all members of the domains Archaea and Bacteria have in common?

A glucose molecule has a molecular formula of C6H12O6. When two glucose molecules are linked together to make maltose, the resulting molecular formula is C12H22O11. Briefly explain why the molecular formula of maltose is not C12H24O12.