Homeostasis
Scientific Method
Experimental Design
Vocabulary
Msc.
100
What is homeostasis?
An organisms' tendency to keep their internal conditions the same. Ex. blood pressure, body temperature, etc.
100
What is a hypothesis?
An educated guess. It is written as an "If...then...because..." statement.
100
What are standards/constants?
The part of the experiment kept the same throughout.
100
Define biology
The study of life/living things
100
What is one characteristic of living things?
Genes, metabolism, reproduce, cells, grow/develop, maintain homeostasis, respond to stimuli
200
What is an example of homeostasis?
Many possible answers.
Ex. Body temperature, blood pressure, calcium, blood sugar, fluid, salts...
200
What is the last step of the scientific method?
Conclusions
200
What is the independent variable?
Light or no light
200
What is the word:
Anything that is or was alive.
Organism
200
Is it alive?
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Yes
300
Positive or negative feedback?
Your body is warm, so you sweat to cool off.
Negative feedback
300
What is the step where you write your educated guess?
Hypothesis
300
What is the dependent variable?
Plant growth
300
Define homeostasis
Keeping internal conditions the same
300
Write a hypothesis:
Lou wants to know if milk helps kids grow taller.
Answers will vary. Need to have "If...then...because"
Ex. If kids drink milk, then they will grow taller, because milk has lots of calcium.
400
Positive or negative?
Your body senses plateletts trying to clot at a paper cut. It sends more of them.
Positive feedback
400
What do you need to do before you conduct your experiment?
Make your procedure
400
What is the experimental group?
Group 2
400
define: Stimulus
anything that causes a reaction
400
What is the first thing you do when graphing?
Label it!
500
Is it positive or negative feedback?:
You have a fever. Your body keeps the temperature raised to help fight infections
Positive feedback
500
What step do you need to do directly before making a hypothesis?
Observations/Research
500
What is the control group?
Group 1
500
What is the difference between a dependent variable, and an independent variable?
Independent: What the scientist is testing/trying (the experiment)
Dependent: What the scientist is measuring/looking for (the result)
500
Where does the independent variable go on a graph?
The x-axis. The y-axis shows the measurement, or dependent variable.