Science Exam
Study Guide

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

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

What is a procedure to test the hypothesis?
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Experiment

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

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

Who was the man who first studied cells?
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Robert Hooke

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

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

What is in charge of making protein?
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Ribosomes

What surrounds and protects the nucleus?
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Nuclear Membrane

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

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

What is the control center of a cell?
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Nucleus

Define these words:
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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.

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

List the steps of how tissues help your hand move when you touch a hot stove.
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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.

What kind of tissue is blood?
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Connective tissue

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

What kind of tissue are villi?
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Epithelial tissue

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

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

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

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

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

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