BiSci Chapter 1- January 28th Flashcards Preview

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Flashcards in BiSci Chapter 1- January 28th Deck (41):
1

Biology

is the study of living organisms and their environments.

2

Organisms

share common characteristics
-organized
-acquire materials and energy
-homeostatic
-respond to stimuli
-reproduce and grow
-have an evolutionary history

3

Atoms

join together to form molecules

4

Molecules

make up a cell

5

Cell

is the smallest structural and functional unit of an organism.

6

Tissue

is a small group of similar cells that perform a particular function.

7

Organ

made up several types of tissues

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Organ System

each organ belongs to this

9

Species

a group of interbreeding organisms

10

Population

all the members of one species in a particular area belong to this

11

Community

interacting populations of the grasslands make up this

12

Ecosystem

the community of populations interacts with the physical environment to form this

13

Biosphere

all the Earth`s ecosystems make up this

14

Levels of Biological Organization

atom
molecule
cell
tissue
organ
organ system
organism
population
community
ecosystem
biosphere

15

Metabolism

describes all of the chemical reactions that occur within a cell

16

Photosynthesis

produces organic molecules, such as sugars, that serve as the basis of the food chain for many other organisms, including humans and all other animals.

17

Homeostasis

the ability of a cell or an organism to maintain an internal environment that operates under specific conditions.

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Reproduce

pass down their genetic info to the next generation

19

Growth

recognized by an increase in size and often the number of cells

20

Development

indicates all the changes that occur from the time the egg is fertilized until death in humans

21

Genes

the info in the DNA

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Mutations

may cause minor variations in genes

23

Evolution

is the process by which a population changes over time

24

Adaptation

each successive generation will include more members with the new variation

25

Vertebrates

are animals that have a nerve cord protected by a vertebral column

26

Culture

encompasses human activities and products passed on fro one generation to the next outside of direct biological inheritance

27

Biodiversity

the number of different species present in a given area

28

Science

is the study of the material universe or physical reality in order to understand it

29

Scientific Theories

are concepts that tell us about the order and the patterns within the natural world (how the natural world is organized).

concepts supported by a broad range of observations, experiments, and data

30

The Principle of Evolution

the theory of evolution has been supported by so many observations and experiments for over a hundred years that it is referred to this term

31

The Scientific Method

-observation
-hypothesis
-experiment/observations
-conclusion

32

Control Group

given the placebo

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Test Group

given the real meds for experimentation

34

Technology

is the application of scientific knowledge to the interests of humans

35

Organ Systems Maintain Homeostasis

maintaining a stable internal environment even when the external environment changes

36

Zygote

fertilized egg

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Evolution

change

38

Biosphere

zone of air, land, and water at the surface of the Earth in which living organisms are found.

39

Cell Theory

all organisms are composed of cells

40

Gene Theory

organisms contain coded info that determines their form, function, and behavior

41

Evolution Theory

all living things have a common ancestor but each is adapted to a particular way of life