Scientific Method

Question 0

Gel electrophoresis

Answer 0

A test to compare DNA. DNA is cut w/ enzymes then placed with well. Small fragments fall into wells. The small fragments fall to the bottom while the large fragments stay on top.

Question 1

Chromatography

Answer 1

A test to separate pigments (color).

Question 2

Indicator

Answer 2

A chemical that changes color with another chemical. Ex: iodine= amber
Iodine+starch= blue-black

Question 3

Control. (Group)

Answer 3

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

Question 4

Dependent variable

Answer 4

What we measure to answer your research question. Put on y axis. “Amt. of” “rate of”

Question 5

Hypothesis

Answer 5

Educated prediction

If, then statement

Question 6

Independent variable

Answer 6

One per experiment
One factor that u changed
“Type of”

Question 7

Placebo

Answer 7

“Sugar pill”
Used in the control group in medicine studies.
-saline shot or sugar pill

Question 8

Sample size

Answer 8

Large group of test subjects
Must have a large sample size to get accurate data
-reduces the size of individual data

Question 9

Theory

Answer 9

A hypothesis that has supported many many many times.

Similar to a law but more complex understanding.

Question 10

Compound light microscope

Answer 10

Magnifies small see through cells.

Question 11

Dichotomous key

Answer 11

A chart with two options per level, used to compare DNA or classify organisms

Question 12

Dissection

Answer 12

To examine dead specimens

Question 13

Graduated cylinder

Answer 13

Used to measur the volume of a Liquid. (Always read bottom of the liquid)

Question 14

Magnification

Answer 14

Make the view of an object larger.

Question 15

Mass

Answer 15

Amount of matter

Question 16

Metric ruler

Answer 16

A tool used to measure length in metric units.

Question 17

Model

Answer 17

A larger representation of something that is difficult to see otherwise.

Question 18

Stain

Answer 18

Chemical put on specimens and is used to better the view of the specimens under a microscope.

Question 19

Triple beam balance

Answer 19

A scale used to find the weight of an object in grams.

Question 20

Volume

Answer 20

The amount of space an object uses.

Question 21

Conclusion

Answer 21

Decision made asked on the results.

Question 22

Controlled experiment

Answer 22

Experiment where the only difference between the groups is made on purpose to find data.

Question 23

Data

Answer 23

Information gathered from an experiment.

Question 24

Observation

Answer 24

When a scientist uses their five senses to collect data.

Question 25

Bias

Answer 25

A believe that is influenced by assumptions or past knowledge.

Question 26

Inference

Answer 26

Conclusion based on observations

Question 27

Peer review

Answer 27

When several other scientist observe your work and data.

Question 28

Hannah

Answer 28

Calkins