Biology - Chapter 1

Dependent vs. independent

Thing measured, thing changed

Experimental vs. control groups

Has all the same variables as the control group but has one change (gets the independent). All variables are same as experimental but no control groups. Experimental gets changes, control group is what you compare it to.

What makes a controlled experiment a controlled experiment?

Only one variables is changed. So you don't change the amount of pennies and the amount of dish soap, you just change the amount of dish soap.

What are the steps of the scientific method?

1. Make an observation that leads to a questions
2. Form a hypothesis
3. Design a controlled experiment
4. Collect data
5. Analyze data

What are the characteristics of life? All must be checked

1. Must have many/more than one cell (unicellular/multicellular)
2. Must reproduce (sexual/asexual)
3. Respond to stimulus in environment (something happens it reacts to)
4. Homeostasis (maintain balance)
5. Evolution (change over time)

What are the two kinds of reproduction?

Sexual - needs 2 parents, asexual - 1 parent makes copy of self

Quantitative vs. qualitative

Numbers vs. Description (colors, shape, etc)

Hypothesis vs. theory

Testable question vs. observation. Explains why or how something is happening, is made up of many hypothesis

Importance of peer review

Different viewpoint, fact check, additional information, make sure paper is unbiased, and check math

Why do scientists use metric system?

It's used worldwide so data is consistent, easy conversions, and more precise measurements

The units of the metric system

kilo (K), hecto (h), deka (da), BASE, deci (d), centi (c), milli (m)

How to convert metric system?

Move decimal based on what its being changed to

Convert 0.45 L to mL.

540

Convert 0.45 deci to hecto

0.00045 Include Base in conversion