1.
A scientist plants two rows of corn for experimentation. She puts fertilizer on row 1 but does not put fertilizer on row 2. Both rows receive the same amount of water and light intensity. She checks the growth of the corn over the course of 5 months. What is one controlled variable in this experiment?
A. 
Amount of fertlizer given to experimental group
B. 
C. 
2.
Which sentence best describes the importance of using a control group?
A. 
When you use a control group you don't need a large sample size.
B. 
When you have a control group you don't have to do any calculations.
C. 
Control groups allow you to compare those recieving the variable and those that are not.
3.
What does Abiotic Factor mean?
A. 
All the living parts of an ecosystem.
B. 
All the consumers of an ecosystem.
C. 
All the nonliving parts of an ecosystem.
4.
An example of a consumer in a pond ecosystem is:
A. 
B. 
C. 
D. 
5.
In an energy pyramid, the lowest level has:
A. 
Less energy than the top level
B. 
Less energy than the second level
C. 
More energy than the top level
D. 
The same amount of energy is available to a consumer
6.
An animal that eats only plants is a :
A. 
B. 
C. 
D. 
7.
What is, in plants, the rigid barrier that surrounds the outside of the plasma membrane, is made of cellulose, and provides support and structure to the cell?
A. 
B. 
C. 
D. 
8.
What is the membrane-bound vesicle for temporary storage of materials such as food, enzymes, and wastes?
A. 
B. 
C. 
D. 
9.
What is, in eukaryotic cells, the central, membrane-bound organelle that manages cellular functions and contains DNA?
A. 
B. 
C. 
D. 
10.
What is a double-membrane organelle that captures light energy and converts it to chemical energy through photosynthesis
A. 
B. 
C. 
D. 
11.
What is a simple cell organelle that helps manufacture proteins?
A. 
B. 
C. 
D. 
12.
The water molecule is _________, because there is an uneven distribution of electron within the molecule.
A. 
B. 
C. 
D. 
13.
A pure substance made up of only one kind of atom
A. 
B. 
C. 
D. 
14.
All of these are major organic compounds except
A. 
B. 
C. 
D. 
15.
All the above are Inorganic except
A. 
B. 
C. 
D. 
16.
Central core of atom
A. 
B. 
C. 
D. 
17.
Fats and oils
A. 
B. 
C. 
D. 
18.
Number of protons and neutrons in the nucleus
A. 
B. 
C. 
D. 
19.
A pH less than 7 is a
A. 
B. 
C. 
D. 
20.
Water is made of 1 oxygen molecule and _____ hydrogen atoms.
A. 
B. 
C. 
D. 
21.
The main pigment in leaves i
A. 
B. 
C. 
D. 
22.
The main products of photosynthesis are:
A. 
B. 
C. 
D. 
E. 
23.
What gas is given off by plants?
A. 
B. 
C. 
D. 
24.
Green plants make their own food through a process known as...
A. 
B. 
C. 
D. 
25.
The tiny openings on the underside of the leaf that help the plant take in carbon dioxide are called...
A. 
B. 
C. 
D.