Download Name Period ______ Date ______ Mrs. Levin Review Questions 1

Name __________________________________ Period ____________ Date __________
Mrs. Levin
Review Questions 1
Scientific Method
1. What is a hypothesis?
__a Testable if then because statement that is an educated guess about the results of
your experiment
2. Three words every hypothesis needs are ________________if then
because_______________________________________
3. What ways can we represent data? _charts, data table, graph_
Cells and Microscopes
1. What are objective lenses?
__________they magnify the specimen__________
2. How do you determine total magnification?
___________multiply the eyepiece magnification (4) times the objective lens
magnification (10, 40 or 100)________________________________________________
Try it: If your eyepiece is 10x magnification and your objective lens is 10x magnification,
what is your total magnification? _10 X 10 = 100_
3. Which knob do you turn to focus under LOW power only?
Coarse focus only, fine focus only under high power
Use the word box to label the cells.
Cell membrane cytoplasm cell wall
chloroplast nucleus vacuole
Animal Cell
5_____ Cell
membrane
____
6_ vacuole
_______
Plant Cell
9_ cell wall
7_ cytoplasm
8_ nucleus __
10 vacuole
11.
nucleus
12
chloroplast
13. Cell
membrane
14. _ cytoplasm
15. What is the smallest unit of life? ____________________the cell___
16. What are two parts found only in plant cells? cell wall and chloroplasts
Name each part of the plant and animal cells shown on the previous page, and tell the function
(job) of each part.
Part
Function
Nucleus
Directs cell activities
Cell membrane
Protects cell, controls what enters and leaves cell
Vacuole
storage
Cell wall
Structure support and protection
Chloroplast
Photosynthesis, making food from sunlight
Cytoplasm
Watery substance that cushions cell parts
The Respiratory System
17. What is the function (job) of the respiratory system?
______________bring in oxygen and release carbon dioxide_____________
_______________________________________________________
18. What muscle controls breathing? ____________diaphragm
http://www.phschool.com/atschool/phsciexp/active_art/respiratory_system/index.htm
l
19. What are alveoli? Where are they found and what do they do? _______tiny sacs that
make up lungs____
_________________http://www.bmu.unimelb.edu.au/examples/gasxlung/__
20. What two gases are exchanged in the alveoli? ____oxygen and carbon dioxide__
21. How do gases move from the lungs into the bloodstream? __Oxygen goes through alveoli
wall into blood, carbon dioxide goes from blood into the alveoli
http://www.bmu.unimelb.edu.au/examples/gasxlung/
22. What is the job of the circulatory system? ___transportation system of the body – it
moves nutrients and oxygen and wastes throughout the body
23. What are the three parts of the circulatory system? ______blood vessels, heart,
blood_____
24. Which blood vessels carry blood away from the heart to the body cells?
____________arteries away_____________
25. Which blood vessels carry blood toward the heart from the body cells?
_________________veins________________
The Digestive System
1. What are the 3 functions (jobs) of the digestive system?
a. Take in nutrients/Break up nutrients/eliminate solid wastes
2. Which organ makes enzymes which break down fats, carbohydrates, and proteins?
_______liver, pancreas__________________
3. Where are most of the nutrients from digested food absorbed into the bloodstream?
_________small intestine____________________________
_______________________________________________________
4. What is mechanical digestion? _________using muscles to break down food____for
example teeth in mouth and muscles in the stomach____________________
_______________________________________________________
5. What is chemical digestion? ______using chemicals to break down food for example
stomach and small intestine and saliva in mouth__
_______________________________________________________
6. Explain how chemical and mechanical digestion both take place in the mouth.
_________saliva is a chemical in the mouth that breaks down starches into sugars, your
jaw muscles chew and break down food
______________________________________________
_______________________________________________________
The Skeletal System
1. What are the five functions (jobs) of the skeletal system?
Support, protection, shape, movement, makes blood cells, storage of calcium
2. What are the main organs of the skeletal system?
__BONES!____and cartilage and ligaments____________________________
_______________________________________________________