GED Updated GED-Science Exam Questions and Answers by cecilia

In a suspension, two materials will mix together only temporarily. One material does not dissolve into the other, but stays suspended only until gravity pulls it down.

Which is an example of a suspension?

A clear container of hydrogen peroxide breaks down to form water and oxygen in approximately one month. When an enzyme known as catalase is added to hydrogen peroxide, water and oxygen are formed almost immediately.

Which of the following actions explains why this effect of catalase is typical of an enzyme?

Exhibit:

Based on the information, which statement would explain this fact?

A cell, the basic unit of living things, contains microscopic structures called organelles. A group of specialized cells of the same type forms a tissue, such as muscle or nerve tissue. An organ such as the liver is composed of different kinds of tissues that contribute to its overall function. A group of related organs form an organ system, such as the digestive system. A living organism may contain a number of organ systems working together to carry on the life functions.

Based on the information, in which category does the human heart belong?