Mid Term Review Flashcards

0
Q

Dependent variable

A

Part of an experiment you measure.

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1
Q

Independent Variable

A

Part of the experiment that you control

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2
Q

Steps in the scientific method include

A

1a: The title- the name of the experiment
1b: Stating the problem- (What, How, Why)
A: what is the experiment supposed to answer?
B:One sentence long, stated in question form.

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3
Q

Hypothesis

A

An educated guess predicting the outcome of the experiment.

A: Statement should be written: If, then… Format

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4
Q

Develop a control experiment

A

Only one variable is tested

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5
Q

Control

A

This variable stays the same during the experiment. It allows you to compare with the experimental data

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6
Q

Experimental

A

This variable is what you’re testing and comparing with the control.

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7
Q

Procedures

A

These are the detailed steps that the experimenter must follow in order to complete the experiment. The procedure must be written in detail, so anyone who tries this experiment won’t make any mistakes.

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8
Q

Analysis of data

A

Read and interpret charts, graphs, and written information.

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9
Q

Independent variable

A

This is the part that the experimenter controls.

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10
Q

Dependent variable

A

This is the part that the experimenter measures.

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11
Q

Conclusion

A

This determines if the experimenter’s hypothesis was supported or not.

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12
Q

What is ecology

A

The study of how organisms interact (live) with each other and the environment.

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13
Q

This includes

A

Abiotic (Nonliving) factors

Biotic (Living) factors

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14
Q

Abiotic (Nonliving) factors

A

Water, space, air, warmth, sunlight

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15
Q

Biotic (living) factors

A

Bacteria, plants, animals

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16
Q

Living vs. Nonliving

A

Biologists have created a list of characteristics of life by which we can recognize between living and Nonliving. Some nonliving things possess some of these characteristics of life, but they must possess ALL of theses characteristics to be considered living

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17
Q

Organization

A

Living things show an orderly structure. All are composed of one or more cells. Each cell contains the genetic material DNA that provides all the information needed to control the organisms life processes.

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18
Q

Reproduction

A

Living things produce offspring. Organisms don’t live forever they must replace themselves for the survival of their species.

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19
Q

Species

A

A group of organisms that can interbreed and produce fertile offspring in nature.

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20
Q

Growth

A

An increase in the amount of living material and the formation of new structures. All organisms grow with different parts of the organism growing at different rates.

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21
Q

Development

A

All of the changes that take place during the life of an organism

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22
Q

Environment

A

Organisms live in a constant interface with their surrounding which includes the air, water, weather, temperature, any organism in the area and many other factors.

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23
Q

Stimulus

A

Anything in an organism’s external or internal environment that causes the organism to react.

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24
Q

Response

A

A reaction to a stimulus in an organism’s environment. The ability to respond to stimulus in the environment is an important characteristic, of living.

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25
Q

Homeostasis

A

The ability of the body to maintain an internal stable environment when the external environment is changing

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26
Q

Energy

A

Is the ability to cause change. Organisms get energy from food. Plants make their own food where as animals, fungi and other organisms get food by eating plants or animals. Organisms maintain homeostasis by using energy.

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27
Q

Adaptation

A

Any inherited structure, behavior, or internal process that enables an organism to respond environmental factors and live to produce offspring. The gradual change in a species through adaptions over time is called evolution.

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28
Q

Environment

A

Every biotic (living) and abiotic (nonliving) things that surround an organism.

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29
Q

Levels of organization

A

Individual-smallest, population, community, ecosystem, biome, biosphere-largest.

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30
Q

Habitat

A

A specific environment where animals live, it’s their home

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31
Q

Population

A

All the organisms of a species that live in the same area.

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32
Q

Community

A

Many different populations living in the same area.

33
Q

Ecosystem

A

Made up of all living things such as bacteria, plants, and animals. They interact with another. Also deals with abiotic factors

34
Q

Niche

A

The role each species plays in the ecosystem.

35
Q

Biome

A

Large groups of ecosystems with similar climates and organisms.

36
Q

Biosphere

A

The earth’s biosphere extends from the highest point in the sky.

37
Q

Symbiosis

A

Are the relationships between the individuals of two (or more) different species.

38
Q

Neutralism

A

Describes the relationship or lack thereof between two organisms. Both organisms are unaffected.

39
Q

Mutualism

A

describes the relationship between two organisms and both organisms BENEFIT from each other.

40
Q

Commensalism

A

describes the relationship between two organisms and ONLY one organism benefits while the other is unaffected.

41
Q

Parasitism

A

describes the relationship between two organisms and one organism benefits while the other is harmed.

42
Q

Competition

A

when organisms compete for vital resources, such as food, shelter, and space. Neither organism benefits. Competition can be between the same species or can be members of different species.

43
Q

Predator

A

animals that eat other living things

44
Q

Prey

A

animals that get eaten by other animals

45
Q

Food Chains

A

show the relationship between predators and prey.

46
Q

Autotrophs or Producers

A

these are animals that MAKE THEIR OWN FOOD to acquire energy. These plants make their own food by PHOTOSYNTHESIS.

47
Q

Hetertrophs or Consumers

A

these animals EAT other animals to acquire energy

48
Q

Herbivores

A

these are animals that eat ONLY plants.

49
Q

Carnivores

A

these are animals that EAT other animals

50
Q

Decomposers

A

these animals break down dead animals

51
Q

Scavengers

A

these animals EAT dead organisms.

52
Q

Omnivores

A

these animals get BOTH plants and animals.

53
Q

Parasites

A

these animals attack their host, but nearly kill them.

54
Q

Food Webs

A

these are diagrams that show overlapping food chains in an ecosystem. Arrows always point towards the consumer this shows the flow of energy.

55
Q

Biodiversity

A

the measurement of the number of different types of species living with an ecosystem.

56
Q

Energy Pyramid

A

these are diagrams that show the amount of energy available at each step of a food chain. Each level of the pyramid is called a Trophic Level.

57
Q

Primary Succession

A

when a pioneer organism first grow on a bare rock surface.

58
Q

Secondary Succession

A

After a natural disaster (fire, storm, ext.) succession begins again.

59
Q

Organic Compounds

A

contain the elements carbon and hydrogen . C6H120G=Glucose (Sugar)

60
Q

Inorganic Compounds

A

does not contain one of these elements together. H2O=Water C02=Carbon Dioxide.

61
Q

Cell Theory

A

All organisms are composed of one or more cells. An organisms can be unicellular, or single cell like some bacteria. Organisms such as plants and animals are multi-cellular, or made up of many cells.The cell is the basic unit of structure and organization of organisms. All cells come from preexisting cells.

62
Q

Exceptions to Cell Theory

A

There also is some question as to how the first cell arose.

Viruses lack typical cellular structure.

63
Q

Cell Organization

A

The basic unit structures a cell. When a cell growth occurs and reproduction results in groups of cells that work together a tissue is formed. Tissues organize in various combinations to form Organ that perform more complex roles within the organism. Multiple organs that work together that an Organ System. All organ systems work together for survival of the organism,.

64
Q

Prokaryotic Cells

A

A prokaryotic is an organisms made of a single prokaryotic cell. Prokaryotic cells DO NOT have a nucleus or other internal compartments. They do not contain membrane bound organelles.

65
Q

Eukaryotic Cells

A

A eukaryote is an organism made up of one or more eukaryotic cells. The DNA of a eukaryotic cell is found in the nucleus. They contain membrane bound organelles.

66
Q

Organelles

A

An organelle is a small structure found in the cytoplasm that carries out specific out specific activities (jobs) inside prokaryotic and eukaryotic cells. It makes up the smallest level of organization.

67
Q

Organelles found in the animal cell

A

Cell membrane, nucleus, ribosomes, golgi bodies, vacuole, cytoplasm, nucleolus, mitochondria, lysosome, endoplasmic reticulum.

68
Q

Organelles found in the plant cell

A

cell membrane, nucleus, ribosome, golgi body, endoplasmic reticulum, choroplast, cytoplasm, nucleolus, mitochondria, vacuole, cell wall.

69
Q

Charles Darwin

A

He developed the theory of evolution

70
Q

Evolution

A

is the process by which species may change over time.

71
Q

Natural Selection

A

Those organisms with the most beneficial traits are more likely to survive and reproduce.

72
Q

Variation

A

There is variation (variety) in every population.

73
Q

Competition

A

Organisms compete for limited population.

74
Q

Offspring

A

Organisms produce more offspring for they can survive.

75
Q

Genetics

A

Organisms pass genetic traits on to their offspring.

76
Q

How do we know organisms existed millions of years ago?

A

There is a fossil record.

77
Q

Speciation

A

is a lineage splitting event that produces two or more separate species.

78
Q

Behavioral changes

A

are changes in species behavior for greater reproductive success.

79
Q

Extinction

A

is the disappearance of entire species. Any time the death rate of individuals within a species is greater than the birth rate, extinction is a possibility.