Unit 1 Lesson 1

Question 1

anything that has mass and takes up space

Answer 1

matter

Question 2

every organism is made of

Answer 2

matter

Question 3

Matter is made up of ____

Answer 3

atoms

Question 4

_____ is the smallest unit of a substance that maintains the properties of that substance

Answer 4

an atom

Question 5

Different types of atoms are called _____

Answer 5

elements

Question 6

There are nearly 100 different types of _____ that are present in Earth

Answer 6

elements

Question 7

They are the most basic substances

Answer 7

elements

Question 8

A _____ is made up of two or more atoms held together by chemical bonds

Answer 8

molecule

Question 9

_____ are what make up cells in our bodies and all the substances our bodies use

Answer 9

Molecules

Question 10

The _____ stored in the bonds of food molecules supplies the energy that cells and organisms need to stay alive

Answer 10

energy

Question 11

Organisms need a constant source of energy to _____, _____, and _____

Answer 11

live; grow; reproduce

Question 12

_____ is the ability to cause change

Answer 12

Energy

Question 13

When an organism eats food, it _____ that substance and it releases _____

Answer 13

breaks down; the energy stored within it

Question 14

All organisms need a source of _____

Answer 14

energy and matter

Question 15

_____ must get their energy and matter from the environment

Answer 15

producers

Question 16

_____ are an example of a producer

Answer 16

Plants

Question 17

an organism that uses energy and matter from the environment to make its own food molecules

Answer 17

Producer

Question 18

an organism that gets energy and matter by eating other organisms

Answer 18

Consumer

Question 19

an organism that gets energy and matter by breaking down the remains of other organisms that have died

Answer 19

Decomposer

Question 20

They break down the wastes expelled by other organisms

Answer 20

Decomposer