Biology Test Ch. 1 Flashcards Preview

Biology > Biology Test Ch. 1 > Flashcards

Flashcards in Biology Test Ch. 1 Deck (66):
1

order

classify organisms

2

organ system

group of organs that work together to carry out a task

ex. respiratory system

3

tissues

groups of similar cells

4

cells

-smallest living units

-made up of organelles

5

organelles

tiny organ, small enough to fit into cell

ex. nucleus - brain of cell

6

molecules

made up of atoms

7

atoms

-smallest part of element

-has chemical properties of that element

8

entropy

-amount of disorder in a system

-unorganized amount of entropy goes up with age

-ultimate stage of entropy = death

9

Metabolism

-the sum of ALL chemical reactions going on in body

-breakdown and synthesis of molecules

-making energy available, building needed parts
ex. breaking down breakfast

10

Responsiveness

how organisms react to their environment

ex: mouse running from eagle

11

Motility

ability to move

ex:crawl, fly, swim, slither

12

Reproduction

production of offspring

13

Asexual

-single parent,

-genetically identical offspring

14

Sexual

-2 parents

-unique offspring

15

Development

progressive changes resulting increased size

16

Heredity

-involves passing of “genes” from parent to offspring

-controls "pcb" traits
(physical, chemical, biological)

17

genes are made of DNA but make...

protiens**

18

Adaptations

-genetic mutations gives advantage

-a change in the gene

19

Natural Selection

evolutionary mechanism identified by Darwin and Wallace

20

individuals with "GOOD" variations have...

an advantage in a competitive environment

21

Nature "SELECTS" the most "FIT" organisms to...

become the parents of the next generation. FIT=sueded

22

Life formed...

3.8 bill years ago

23

Earth is how old?

4.5 billion yrs old

24

When was oxygen first created?

2.5 billion years ago

25

Was there oxygen when earth was first created?

no

26

FIRST photosynthesis occurred in...

bacteria....NOT plants

27

Life started in the sea then moved to...

land

28

First things moved onto the land were...

plants

29

First group of ANIMALS to move on land were...

insects

30

First inverter-bra class

fish (came out of the water)

31

fish evolved into...

amphibians

32

amphibians made up...

reptiles

33

Reptiles then cased

birds and mammals

34

Ecology

the study of relationships between organisms and their environments

35

Populations

-groups of certain organisms that live in the same area

-interbreed

ex. fl panther, key deer

36

Community

Anything living in same area that's ALIVE

ex, plants, animals, bacteria (anything thats alive)

37

Ecosystem

community and its nonliving surroundings

ex. rocks, water, air all together **EVERGLADES

38

Biosphere

ALL ecosystems of earth

39

Taxonomy

science of classifying organisms into different taxa

40

Species

-come from same group

-structurally similar

-interbreed

(look alike)

41

Species have to be able to create...

FERTILE offspring

42

Genus

includes related and similar species

43

scientific name =

genus + species*** (underline both words, capitalize first)

ex.
-Quercus virginiana - “Live Oak”***

-Agkistrodon piscivorous - “Water Moccasin”, “Cotton Mouth”

44

Family - grouping of..

genera

45

Order - grouping of..

families

46

Class - grouping of

orders

47

Phylum (Zoology) or Division (Botany) grouping of...

classes

48

Kingdom - grouping of

phyla or divisions

49

Domain - grouping of

kingdoms

50

Bacteria =

Bacteria

51

Archaea =

Archaea

52

Eukarya =

-Protista
-Plantae
-Fungi
-Animalia

53

Kingdom Animalia

-multicellular
-heterotrophs
-complex organ systems
-eukaryotes

ex. humans, insects, tigers

54

eukaryotes have...

a true nucleus

55

Kingdom Plantae

-multicellular

-autotrophs

-complex organ systems

-eukaryotes = true nucleus
ex. trees, wildflowers

56

Kingdom Fungi

-single AND multi celled

-heterotrophs

-eukaryotes

ex. yeasts, mushrooms

57

Kingdom Protista

-single AND multi-celled

-eukaryotes

ex. amoebas, algae

58

Eugle...

plant, moves, eat

59

Kingdom Bacteria

-single celled

-prokaryotes

ex. E.coli, strep

60

Kingdom Archaea

- resemble bacteria but are NOT

-single celled

-prokaryotic

-live in harsh, O2 deficient environments

ex. found in sulfur hot springs

61

Genetic similarities suggest all living things arose from...

single group of ancestral cells present at the dawn of life

62

Hypothesis**

tentative generalization

63

Theory**

hypothesis that survives repeated attempts to disprove it

64

Scientific Method Steps

question
hypothesis
prediction
experiment
conclusions

65

Control group

keep all factors the same except the one in question

65

genes determine physical...

traits but also SOME behaviors