Name: ___________________________________
Teacher: __________________
Period: _____
7 Science Semester Exam Review – Fall 2016
Use the information below and your knowledge of science to answer questions 1-7.
Jacob had to create an experiment for his science class. He thought if sparkling mineral water was
used in a plant, then the plant would grow taller than a plant watered with tap water. He bought eight ivy
plants that were all the same height. He divided the plants into two groups with four plants in each
group. The first group of ivy plants received 25 mL of sparkling mineral water each day. Group one
plants were placed in a sunny window. Jacob measured the plants each day.
He placed the other four ivy plants in a sunny window but watered the plants with water from his
kitchen faucet. He watered each plant with 25 mL of tap water. He measured the plants in group two
daily. At the end of two weeks, Jacob was able to determine that the ivy plants grown in sparkling
mineral water grew an average of 2.5 cm taller than the plants grown in tap water.
Matching – (Note: Some terms will be used more than one time!) Use page 29 in your textbook for
reference.
A. Hypothesis
B.
Independent variable
C.
D.
Dependent variable
Controlled variable (constant)
1. He thought if sparkling mineral water was used in a plant, then the plant will grow taller than
a plant using tap water.
2. Jacob used sparkling mineral water on his ivy plants.
3. All of the plants received the same amount of water, were placed in a sunny window and were
measured daily.
4. Part of an experiment that changes on purpose
5. An educated guess about how the independent variable will affect the dependent variable
6. Variable that occurs as a result of the independent variable; outcome or result of an
experiment
7. Factor in an experiment that is kept the same in all trials
8. Complete the chart below to identify if the pictures show WORK being done on an object and
explain why.
Situation / Picture
Carson is running late to class! He
runs down the hallway carrying his
heavy backpack, but is stopped by Mr.
Barry.
WORK or
NO WORK
Explanation
9. How do you calculate work?_________________________________________________________
10. Use Reference pages R14-R15 (in the back of the book) to define the terms below
a. element - _________________________________________________________________
b. compound - _______________________________________________________________
c. organic compound - ________________________________________________________
11. Complete the chart below to determine if the compounds are organic or inorganic.
Chemical Formula
Organic or Inorganic
CO2
C2H5OH
H2O
C6H12O6
12. Name six characteristics of all living things.
a. ____________________________
d. ____________________________
b. ____________________________
e. ____________________________
c. ____________________________
f.
____________________________
13. (Page 110-111) Theodor Schwann, Matthias Schleiden and Rudolf Virchow combined their ideas to
create the cell theory. Complete the statements below about cell theory. The theory states that:
a. All living things or organisms are made of _____________________________________.
b. Cells come from _________________________________________________________.
c. _____________________ are the ________________________ units of life.
14. Label the diagrams of the cell using the terms below. (Pages 121-126)
mitochondria
vacuole
cell wall
cytoplasm
chloroplast
cell membrane
lysosome
nucleus
15. Name the two cell structures found only in a plant and state the function of the organelle.
Cell Structure only in plants
Function
Matching – Match the cell structure with its corresponding function. (Pages 121-126)
A.
B.
C.
D.
E.
F.
Mitochondria
Nucleus
Lysosome
Cytoplasm
Vacuole
Cell membrane
16. Breaks down cellular waste, trashcan
17. protects the cell and allows material to move in and out of the cell
18. changes food into energy
19. control center of the cell
20. stores water, food and wastes
21. thick fluid inside the cell
Use the word bank below to complete each of the levels of organization. (pages 134-137)
tissue
organism
cell
organ system
organ
22. group of organs that work together to perform a major function in the body ________________
23. a living thing __________________________
24. group of tissues that work together ________________________
25. smallest unit of life and the basic unit of structure and function in living things ________________
26. group of similar cells that perform a specific function in an organism _____________________
27. List the levels of organization from simplest to most complex with the simplest level in the smallest
part of the pyramid.
28. Complete the chart below about human body systems
Picture of Body
System
Name of System
What are the main functions of this
system?
29. Use the following terms to complete the sentences below.
Reproductive
Endocrine
Excretory
Integumentary
a. The _______________________ system collects wastes produced by cells and removes
wastes from the cells.
b. The __________________________system controls many of the body’s daily activities as
well as long-term changes such as development through the release of hormones into the
bloodstream.
c. The ___________________________ system is responsible for creating new members of
the species.
d. The _____________________ covers and protects the body to prevent water loss. This
system also has sensory neurons attached to it.
30. Complete the chart below to indicate whether the following represent chemical changes or physical
changes made by the Digestive System. Place a check in the column for either physical or
chemical change.
Action
Smooth muscles in stomach churning food
Hydrochloric acid in stomach dissolves food
Saliva breaks down carbohydrates with an enzyme named amylase
Chewing
The pancreas releasing digestive enzymes into the small intestine
The esophagus pushes food toward the stomach even if you are upside down
Proteins are broken down into amino acids
Food moving through the digestive system
31. LABEL THE DIGESTIVE SYSTEM
Physical
Change
Chemical
Change