Keywords B Flashcards

1
Q

abyssal zone

A

a layer of the pelagic zone of the ocean

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2
Q

aerobic respiration

A

A chemical process in which oxygen is used to make energy from carbohydrates (sugars).

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3
Q

ammonia

A

produces the first form of nitrogen in the nitrogen cycle through mineralization

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4
Q

ammonification

A

the process by which microorganisms present in soil, sediment, or water mineralize low molecular weight, dissolved, organic molecules presenting amine or amide groups (of general formula R-NH2) and produce ammonium

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5
Q

anaerobic respiration

A

respiration through which cells can break down sugars to generate energy in the absence of oxygen.

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6
Q

assimilation

A

the movement of digested food molecules into the cells inside the body to be used

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7
Q

barrier islands

A

constantly changing deposit of sand that forms parallel to the coast

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8
Q

bathyal zone

A

marine ecologic realm extending down from the edge of the continental shelf to the depth at which the water temp is 39 degrees farenhite

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9
Q

Biosphere

A

A global ecosystem made up of living organisms: plants, animals, and bacteria

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10
Q

Bottleneck Effect

A

A reduction in population due to environmental disasters/events

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11
Q

Hydrologic Cycle

A

The continuous circulation of water through natural processes

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12
Q

Cellular Respiration

A

A process that converts sugars and oxygen into ATP and carbon dioxide. (C6H12O6 + 6O2 → 6CO2 + 6H2O)

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13
Q

climate

A

The average weather of an environment over a period of time (months - years)

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14
Q

Community

A

A group of species that interact and/or live in a shared area

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15
Q

convection currents

A

global air movements that are caused by the unequal heating of Earth

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16
Q

cyanobacteria

A

large group of diverse photoautrophic prokayotes and are classified as monophyletic phylum within domain bacteria

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17
Q

denitrification

A

the microbial process of reducing nitrate to gaseous forms of oxygen

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18
Q

Ecosystem

A

a biological community of interacting organisms and their physical environment.

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19
Q

endemic species

A

species that is native and found in a limited area

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20
Q

Euphotic Zone

A

The upper layer of the ocean that allows light to enter and foster photosynthesis

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21
Q

eutrophic

A

the enviornment becomes enriched with nutrients, increasing the amount of plant and algae growth to estuaries

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22
Q

G.I.S.

A

Geographic information systems help to store, analyze, and retrieve geological data.

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23
Q

gaia hypothesis theory

A

posits that Earth and its biological systems behave as a huge single entity.

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24
Q

gene flow

A

involves genes moving in or out of a population

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25
Q

genetic diversity

A

the range of diversity within a species

26
Q

Genetic Drift

A

Evolution through the random altering of genes

27
Q

Geographic isolation

A

Two populations are separated by geographic barriers. Ex: mountains, rivers, and other bodies of water

28
Q

H.I.P.P.O.

A

H=Habitat Loss, I=Invasive Species, P=Pollution, P=Human Population, and O=Overharvesting

29
Q

Habitat

A

The natural environment of an organism

30
Q

hydrosphere

A

total amount of water on the planet

31
Q

indicator species

A

an organism whose presence, absence, or abundance reflects a specific environmental conditioin

32
Q

intertidal zone

A

area of shoreline between high tide and low tide

33
Q

keystone species

A

a species that defines an ecosystem

34
Q

limiting nutrient

A

the nutrient that has the smallest quantity in an ecosystem

35
Q

limnetic zone

A

the open water area where the light does not generally penetate all the way to the bottom

36
Q

Lithosphere

A

The layer of the Earth that includes the crust and the very upper layer of the mantle.

37
Q

littoral zone

A

zone in freshwater where light reaches the bottom and nurtures plants

38
Q

lotic water

A

rapidly flowing water

39
Q

Macroevolution

A

A major evolutionary change in traits or genetics

40
Q

Macronutrients

A

Nutrients that the body needs to survive, gain energy, and/or help prevent disease

41
Q

Mass Extinction

A

When species die or vanish in a large amount over a short period of time, faster than they are being reborn/repopulated.

42
Q

Native Species

A

A species that originated in that habitat and has adapted to it over its life

43
Q

niche specialist

A

being advantageous for an organism to occupy a specific niche

44
Q

nitrogen cycle

A

repeating cycle of processes where nitrogen is moved through living and non-living things

45
Q

nutrient cycle

A

the movement and exchange of inorganic and organic matter back into the production of matter. Energy flow is a unidirectional and noncyclic pathway, whereas the movement of mineral nutrients is cyclic.

46
Q

Organism

A

A living entity

47
Q

Phosphorous Cycle

A

The cycle which phosphorous moves between the lithosphere, hydrosphere, and biosphere

48
Q

Phylogeny

A

The history of evolution or line of descent in a species or group

49
Q

Population

A

A group of individuals in a community which share the same species.

50
Q

profundal zone

A

a deep zone of a island body of freestanding water, such as a lake or a pond

51
Q

Reproductive Isolation

A

when two populations are no longer able to reproduce with each other

52
Q

species evenness

A

a measure of the relative abundances of species within a community

53
Q

species richness

A

the number of species in a community

54
Q

Stratosphere

A

The second layer of the Earth’s atmosphere, containing the ozone layer

55
Q

sulfur cycle

A

the movement of sulfur through the geosphere and bioshphere

56
Q

sympatric speciation

A

when their is no physical barriers preventing any members of a species mating with another

57
Q

The Coriolis effect

A

deflection cause by the movement of the earth

58
Q

The founder effect

A

The loss of genetic diversity which comes from the separation of a group from the original population

59
Q

Transpiration

A

When water vapor leaves a plant or leaf.

60
Q

Weather

A

The state the atmosphere is in, including temperature, humidity, wind, air pressure, precipitation and clouds.