Chapter 1- The Science Of Biology Flashcards Preview

Biology > Chapter 1- The Science Of Biology > Flashcards

Flashcards in Chapter 1- The Science Of Biology Deck (23):
1

What does Bio mean
What does Olgy mean

Life
The study of

2

What is a hypothesis

An educated guess that might be true. It must be testable

3

A null hypothesis

A statement that if true would disprove your original hypothesis. Every good hypothesis must have a null hypothesis attached

4

Theory

A hypothesis that has been validated or tested

5

Scientific law

A theory that continues to be true over many years

6

Ideology

A set of beliefs or standards that shade how a person thinks

7

Redi's experiment

He came up with a hypothesis that maggots on meat came from flies. He tested it by covering some meat and leaving another piece uncovered. The uncovered piece got maggots and the covered piece didn't. Therefore his hypothesis was true

8

Louis Pasteur

Father of microbiology
The first to really understand microbiology

9

Who was pasteurization named after and explain it

Louis Pasteur
Farmers collect contaminated milk Bc there is feces on utters. To fix this they take the milk to a dairy and put it in a tank. They heat the tank so the milk almost boils and then they let it cool. The heat kills 95% of bacteria. So now the milk lasts longer.

10

What experiment led to pasteurization

It was pastures and it was when he figured out that if he heated broth to kill bacteria and let it sit nothing would grow if he used a container with a special neck that stopped dust from entering. Dust has bacteria not air alone. His work greatly extended the life of humans

11

Requirements for all living things

Made up of cells, reproduce, are all based on a universal generic code (DNA), grow and develop, obtain and use materials/energy, respond to environment, maintain a stable internal environment, and change over time

12

DNA

Controls much of your personality

13

Homeostasis

Homeo=same
Stasis=not changing
Your body must maintain this

14

What is the shape of veins in leaves called

Venation

15

What are the three types of venation

Parallel, branched, and midrib

16

Levels of organization

Molecules-cells-groups of cells-organism-population-community-ecosystem-biosphere

17

4 types of tissue in the human body

Nervous
Connective
Epithelial
Muscular

18

Normal body temp in celsius

37

19

Microscopes two main types

Compound and electron

20

Compound microscopes

Highest magnification is 1000xs

21

Electron microscopes

Can look at things smaller than 1000xs

22

Two types of electron microscopes

TEM AND SEM
transmission electron microscopes
Scanning electron microscopes

23

The disadvantage to electron microscopes

In order to see what's under the microscope you must kill it you can't view anything unless it's dead