Index Cards For Biology Quiz On Cycles In Nature And Populations

Front 1

Process in which plants absorb nitrogen

Back 1

Assimilation

Front 2

Nitrogen from animal waste or decaying bodies is returned by bacteria

Back 2

Ammoniafication
(Ammonia-fication)

Front 3

What is the process called where nitrogen is changed into Nitrogen Gas (N2), which returns to the atmosphere

Back 3

Denitrification

Front 4

Changing Amino Acids into Nitrogen

Back 4

Nitrification

Front 5

What five things must be cycled in an environment?

Back 5

- Water
- Carbon
- Oxygen
- Phosphorus
- Nitrogen

Front 6

What is the process in which water seeps into the soil from run-off?

Back 6

Percolation
(Per-cola-tion)

Front 7

What is the process of exchanging Oxygen and Co2 between organisms and their surroundings?

Back 7

Respiration
(Res-pi-ration)

Front 8

Why must Nitrogen be transferred through an ecosystem?

Back 8

So organisms can make proteins

Front 9

What percentage of the atmosphere is Nitrogen?

Back 9

78%

Front 10

What gas is created when fossil fuels are burned?

Back 10

Carbon

Front 11

What gas is a major component in nucleic acids (RNA + DNA) and proteins?

Back 11

Nitrogen

Front 12

What are the special bacteria that are used to make the process of Nitrogen Fixation occur?

Back 12

Legumes
(Leg-u-mes)

Front 13

What are the three ways Nitrogen can be fixed in an environment?

Back 13

- When fossil fuels are burned
- Lightning
- Bacteria

Front 14

Why is Phosphorus important (what is it found in)?

Back 14

It is needed to form ATP and DNA

Front 15

What form is Phosphorus found as in rocks and soils?

Back 15

Calcium Phosphate
(Cal-ci-um Ph-osp-hate)

Front 16

What does Calcium Phosphate form when it dissolves in water after being released from soils and rocks?

Back 16

Phosphorus
(Phos-pho-rus)

Front 17

From where do plants absorb phosphates from?

Back 17

Their roots

Front 18

How is Phosphorus returned to the soil?

Back 18

It is released back into the ground when animals die

Front 19

Where do animals get Phosphorus from?

Back 19

From consuming plants

Front 20

Is Phosphorus a gas?

Back 20

No (it is solid at room temperature)

Front 21

What are the three main characteristics of a population?

Back 21

- Geographic Distribution
- Density
- Growth Rate

Front 22

What is Geographic Distribution also known as?

Back 22

The "range"

Front 23

What does Geographic Distribution do?

Back 23

Describes an area inhabited by a population

Front 24

What is the formulate for Population density (Important)?

Back 24

Number of individuals (Ex. 4 Deer)
__________________
Unit Area (Ex. 2 Sq. Miles)

Front 25

What is population density?

Back 25

The number of individuals per unit area

Front 26

What is population density dependent on?

Back 26

the species of organisms and the ecosystem

Front 27

What three things are population growth rate?

Back 27

- Number of births
- Number of deaths
- Number of individuals that enter and leave a population

Front 28

What are limiting factors?

Back 28

Factors that cause a population's growth to decrease

Front 29

What line on a graph is the carrying capacity?

Back 29

The line on top that the number of individuals won't go passed

Front 30

What is the carrying capacity of an environment?

Back 30

The maximum number of individuals it can hold

Front 31

What is it called when a population slows down or stops after a period of exponential growth?

Back 31

Logistic Growth
(Log-is-tic)

Front 32

What shape does Exponential Growth usually look like on a graph?

Back 32

A "J-Shape"

Front 33

What kind of growth can only occur when resources are unlimited and conditions are ideal?

Back 33

Exponential Growth
(Ex-pon-en-tial)

Front 34

What does Exponential Growth mean?

Back 34

The individuals in a population reproduce at a constant rate

Front 35

What is Immigration?

Back 35

When individuals move into a population

Front 36

What is Emigration?

Back 36

When individuals move out of a population

Front 37

What are the two types of limiting factors?

Back 37

Density-Dependent and Density-Independent

Front 38

What kind of limiting factors change as the size of a population increases or decreases?

Back 38

Density-Dependent Limiting-Factors

Front 39

What kind of limiting factors affect a population regardless of population size?

Back 39

Density-Independent Limiting-Factors

Front 40

What are the three things that Density-Dependent Factors include?

Back 40

- Predation
- Population Size
- Parasitism and Disease

Front 41

What is the name of the disease called "Blue-Tongue" in deer?

Back 41

Epizootic Hemorrhagic
(Epi-zoo-tic Hem-orr-hag-ic)

Front 42

What are the four factors that are considered Density-Independent Factors?

Back 42

- Unusual weather (drought; flood)
- Natural Disasters (Tsunami, Tornadoes, Hurricanes)
- Seasonal Cycles
- Human Activities (damming, logging, etc.)

Front 43

What is Demography?

Back 43

The study of human populations

Front 44

What type of density factors are these:
- Unusual weather (drought; flood)
- Natural Disasters (Tsunami, Tornadoes, Hurricanes)
- Seasonal Cycles
- Human Activities

Back 44

Density-Independent Factors

Front 45

What is the change in a population from high birth rates and high death rates, to low birth rates and low death rates?

Back 45

Demographic Transition
(Demo-graphic Tran-sit-ion)

Front 46

What is Demographic Transition?

Back 46

The change in a population from high birth and high death rates, to low birth rates and low death rates