Unit 1 Chapter 1What is Biology?

Biology: the study of life

Characteristics of living things:

Living things have an orderly structure

Characteristics of living things:

Living things produce offspring

Characteristics of living things:

Living things grow & develop

Characteristics of living things:

Living things adjust to changes in the environment

Methods of Biology

Scientific Method As series of steps to solve a problem

Experiment An investigation that

tests a hypothesis by the process of collecting information under controlled conditions

Methods of Biology

Hypothesis An explanation for a question or a problem that

can be formally tested Control

The group in which all conditions are kept the same

Theory An explanation that is supported by a large body

of scientific evidence obtained from many different investigations

Methods of Biology

Independent variable The condition in an

experiment that is changed

Dependent variable The condition that

results from changes in the independent variable

Data (information obtained from investigations)

1) Quantitative Numerical data that

may be analyzed by comparison

Ex: used to make a graph or table

Data (information obtained from investigations)

2) Qualitative Observational data,

not easily expressed as quantitative information

Ex: written descriptions of some phenomena

Tools used by Biologists

Beaker Bunsen burner

Tools used by Biologists

Cork Cover slip

Tools used by Biologists

Digital balance Dissecting tray

Tools used by Biologists

Dropper bottle Flask

Tools used by Biologists

Forceps Funnel

Tools used by Biologists

Graduated cylinder Hot plate

Can you read the graduated cylinder?

Tools used by Biologists

Inoculating loop Meter stick

Using an inoculating loop(by flaming for sterilization)

Tools used by Biologists

Microscope Microscope slide

Using a Compound Light Microscope

Tools used by Biologists

Mortar & pestle Petri dish

Tools used by Biologists

Pipettes: micropipettes & dropping pipettes

Improper use of serological pipette

Never pipette by mouth!!

Tools used by Biologists Ring stand (& clamps)

(uses)

Tools used by Biologists

Scalpel Stereoscope

Tools used by Biologists

Spatula & Stirring rod

Thermometer

Tools used by Biologists

Test tube

Test tube clamp

Test tube rack

Use Test Tubes safely!

Tools used by Biologists

Triple beam balance Weight boat

Can you read this Balance?