Q: Signs in many stores and restaurants warn that microwaves are in use. What is the main reason for this warning? OPTIONS:
- Some people do not like food cooked in microwave ovens.
- Microwaves sometimes affect people's sense of sight.
- Microwaves sometimes cause hair or teeth to fall out.
- Some people have pacemakers that may be affected by microwaves.
A: Some people have pacemakers that may be affected by microwaves.

Because sulfur cannot be decomposed by simple chemical methods into two or more different substances, it is classified as
OPTIONS:
- an element.
- a compound.
- a mixture.
- a molecule.

an element.

Q: Which unit is used to indicate the amount of energy in food? ---- OPTIONS:
- ounce
- degree
- calorie
- gram

A: calorie

When oil is burning, the reaction will
===
OPTIONS:
- only release energy
- only absorb energy
- neither absorb nor release energy
- sometimes release and sometimes absorb energy depending on the oil

only release energy

Question:
Cats are most closely related to which of the following animals?
OPTIONS:
- crocodiles
- whales
- frogs
- penguins
Answer:
whales

*Question*: Which is a major function of the vacuoles found in cells? OPTIONS:
- to store water and food for cells
- to release energy for cells
- to control what enters and leaves cells
- to provide protection for cells
*Answer*:
to store water and food for cells