Scientific Method

Question 0

Chromatography

Answer 0

A test to separate pigments (color)

Put pigment above water line

Question 1

Rachel Zoon

Answer 1

uh…answer xD

Question 2

Gel Electrophoresis

Answer 2

A test to compare DNA or proteins
DNA is cut w/ enzymes then placed in wells
Small fragments fall to bottom of plate
Compare banding patterns to read

Question 3

Indicator

Answer 3

A chemical that changes color w/ another chemical
Ex: iodine=amber
Iodine+starch=blue/black

Question 4

Control

Answer 4

“Normal”
W/ medicine studies=placebo
Used for comparison

Question 5

Dependent variable

Answer 5

What to measure to answer the research question
Put on Y axis
“Amt. of”
“Rate of”

Question 6

Hypothesis

Answer 6

Educated prediction

If (we do this), then (this will happen)

Question 7

Independent variable

Answer 7

One per experiment
One factor that you change
Category
“Type of”

Question 8

Placebo

Answer 8

Used for the control group in medicinal studies

-saline shot or sugar pill

Question 9

Sample size

Answer 9

• large group of test subjects
• must have a large sample size the have accurate and reliable data
• reduces effect of of individual differences

Question 10

Theory

Answer 10

A hypothesis that has been supported many many many times

Similar to a law by more complex understanding

Question 11

Compound light microscope

Answer 11

Magnifies translucent objects

Question 12

Dichotomous key

Answer 12

Chart with two options per level, used to classify organisms

Question 13

Dissection

Answer 13

Examination of a preserved specimen

Question 14

Graduated cylinder

Answer 14

Tool used to measure liquid volume

Question 15

Magnification

Answer 15

Enlarge view of the object

Question 16

Mass

Answer 16

Quantity of matter

Question 17

Metric ruler

Answer 17

Tool used to determine length in metric units

Question 18

Model

Answer 18

A representation of a concept that is difficult or impossible to view

Question 19

Stain

Answer 19

Chemical used to enhance microscopic view of biological samples

Question 20

Triple beam balance

Answer 20

instrument used to find mass in grams

Question 21

Volume

Answer 21

The space an object occupies

Question 22

Conclusion

Answer 22

Decision about the results

Question 23

Controlled experiment

Answer 23

Experiment where only the variation between groups is deliberate

Question 24

Hypothesis

Answer 24

An educated prediction, a tentative explanation to an observation

Question 25

Observation

Answer 25

Data that is collected by the senses

Question 26

Bias

Answer 26

Belief that is influenced by assumptions

Question 27

Inference

Answer 27

Conclusions based on observations

Question 28

Peer review

Answer 28

Several scientists examine the details of the experiment