1. Science Exam Study Guide

2. What are the six parts of the scientific method (in order)?  Observation  Hypothesis  Experiment  Data collection  Conclusion  Retest

3. What are the 3 types of variables in an experiment?  Control  Independent  Dependent

4. What is a procedure to test the hypothesis?  Experiment

5. Which one of the steps is gathered through your senses?  Observation

6. In our floating cans experiment:  What was the control variable?  The can of coke  What type of data did we collect?  Qualitative  What was the independent variable?  The different cans of soda

7. Who was the man who first studied cells?  Robert Hooke

8. What is a clear, jelly-like substance that holds the organelles in the cell?  Cytoplasm

9. What is the stiff outer layer that gives plant cells their shape?  Cell Wall

10. What is in charge of making protein?  Ribosomes

11. What surrounds and protects the nucleus?  Nuclear Membrane

12. What is in charge of what enters and leaves the cell?  Cell Membrane

13. What is found only in plant cells and allows the plant to make food?  Chloroplast

14. What is the control center of a cell?  Nucleus

15. Define these words:  Tissue – specialized cells with similar structure and function.  Organ – a structure made up of at least two types of tissues that work together to perform a specific job.  System – a group of organs that work together to perform a specific function.

16. What are the jobs of the digestive system?  To digest food  To transfer digested nutrients into the blood  To absorb water

17. List the steps of how tissues help your hand move when you touch a hot stove.  Nerves in your hand send a message to the spinal cord. A reflex takes place when nerves in the spinal cord send signals to muscles in your hand that cause you to move it off the stove. Then, the nerves send a message up the spinal cord, where the brain receives it.

18. What kind of tissue is blood?  Connective tissue

19. What kind of tissue gives an organism the ability to move?  Muscle tissue

20. What kind of tissue are villi?  Epithelial tissue

21. What kind of tissue gives an organism the ability to respond to stimuli in the environment  Nerve tissue

22. Describe the levels of organization from cells to organ systems  Cells make up tissue, tissue make up organs, and organs make up organ systems.

23. What are the four kinds of tissues?  Epithelial  Connective  Muscle  Nerve

24. What do organs have in common?  They are all made up of the four kinds of tissue.

25. Why is the heart made up mostly of muscle tissue?  The heart requires muscle tissue to keep beating.

26. Your test will be on Monday. Your 2 assignments are: 1. complete the packet 2. study your study guide