Biology 1001A Lecture Notes - Radiant Energy, Micronutrient, Heterotroph

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7 Dec 2012

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A few terms : community: all of the organisms living in some defined place, ecosystem: a biotic community and its abiotic environment functioning as a system, ecosystems are open, not closed systems. Ecosystem involves the community and it also includes the abiotic components of the environment. Ecosystems are fundamentally open systems (energy, nutrients) that means that any ecosystem on earth is going to require some source of energy input (light energy from the sun). Many ecosystems give energy to the environment or to other ecostsyems in the form of sound or heat. Ecosystems are not sealed off in terms of nutrients aswell. Streams feeding into a lake (example of nutrient intake) Production- new biomass is being created from inorganic substances. Consumption- biomass that is alreay created is being converted to other forms of biomass. Autotroughs at the bottom make their own food. An ecosystem has the abiotic environment (energy and sun)

Related Questions

1.What is an ecological footprint? What is the greatestcontribution that you make to your footprint? How could you reduceit?

2. Are humans a keystone species? Support your answer.

3. Why does community connectedness matter?

4. Why does community change matter?

5. What kind of environmental features favor pioneer species,what kind favor climax/late succession species? What kinds ofadaptations favor pioneer species, and what kinds favor climaxspecies?

5. What do we mean when we say that landscapes are stable?

6. What would a community ecologist be able to learn from the USCensus?

7. What does evolution have to do with community ecology?

8. What role does disturbance play in ecology? Giveexamples.

9. You will be expected to be able to calculate species richnessand determine evenness and species diversity indices.

10. You will be expected to make a connection between carryingcapacity, population growth, and community succession in NewJersey.

11. What are the factors that can or could influence thecarrying capacity of NJ?

12. Rank the following three factors in terms of their impact onhuman carrying capacity: space availability, food availability,money availability.

13. Why are some invasive species more successful (i.e. havegreater fitness) in their introduced environment compared to theirnative environment?

14. What is global change about and how do our actions affectit? How is NJ going to be affected by global change?

15. Why, if it is summer in the southern hemisphere and winterin the northern hemisphere, do we see an overall increase in globalCO2 concentrations?

16. What is a dead zone and how is it created? What humanactivity (ies) help create a dead zone?

17. How would a fire that burns most of a forest affect theenergy, water, nutrient, and carbon cycles?

18. What are ecosystem services? Give an example of two.

19. Show how the energy and carbon cycles are inter-related.Explain what is happening in your diagram.

20. You need to be able to explain why nitrogen is important andwhy too much nitrogen is bad.

21. Which gas is more important for global warming:CO₂ or methane? Why?

22. What are the major carbon sinks and sources on earth?

23. What evidence do we have that CO2 concentration of theatmosphere has increased in the last 200 years and what evidence dowe have that that increase is due to human activity?

24. What is happening to our oceans in response to the increasein CO2 in the atmosphere. Be complete, there is more than one partto this answer.

25. How do we know that global warming is and will have animpact on populations, communities, and ecosystems?

26. Given what we know about Japanese knotweed, global change,and human activity, explain the interactions and consequences ofJapanese knotweed invasion on our water supply. You need toinclude, the physiology of the plant, the population ecology of theplant, the water cycle (ecosystems), and global change.

27. Regional climate change models predict that this area willget warmer and receive more rainfall. They also predict thatagriculture (i.e. growing plants) will suffer. Explain why. Becomplete in your answer. There are several factors at workhere.

28. Why are sea-levels increasing globally? Give a detailedanswer. What are some likely consequences going to be (other thanlosing land).

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Question1.1. Accidental alterationsduring DNA replication that give rise to variations in organismsare __________. (Points : 1)

adaptive traits
mutations
symbioses
random distributions

Question2.2. The largest reservoir ofcarbon in the carbon cycle is comprised of _________. (Points :1)

freshwater systems andoceans
plants and animals
sedimentary rock andfossil fuels
atmosphere

Question3.3. The principle of utility________. (Points : 1)

holds that any naturalresource should be available for use in manufacturing
holds that something isright when it produces the greatest benefit for the greatest numberof people
is not an ethicalstandard
cannot be used toestimate the value of natural resources

Question4.4. The two processes thatdetermine current biodiversity on a global scale are __________.(Points : 1)

allopatric speciation andimmigration
mutation and habitatselection
mutation and globalclimate change
extinction andspeciation

Question5.5. The conservation ethicholds that we should ________. (Points : 1)

exploit natural resourcesfor economic gain regardless of sustainability
be prudent and efficientin the use of natural resources
consider the environmentthe ultimate servant of mankind
maintain the environmentin a pristine, unaltered state

Question6.6. The preservation ethicholds that we should ________. (Points : 1)

be responsible for wisemanagement while using natural resources
protect areas againstdevelopment while allowing public access
harvest naturalresources
maintain the naturalenvironment in a pristine, unaltered state

Question7.7. Trophic levels and foodchains diagram __________. (Points : 1)

logistic curves
energy flow in anecosystem
population density
natural resourcefluctuations

Question8.8. A hypothesis is ________.(Points : 1)

a prediction
an educated guess thatexplains a phenomenon or answers a question
an instrument that isused to examine environmental conditions
the design of anexperiment that can be used for the process of science

Question9.9. A biocentric view of theworld emphasizes ________. (Points : 1)

the role of corporationsin environmental law
the importance ofconsidering environmental impacts on all living things
the importance ofeconomics in environmental decisions
the dual-natured view ofhumans and animals as environmental controls

Question10.10. Malthus was responsiblefor ________. (Points : 1)

the book The PopulationBomb that described the disastrous effects of human populationgrowth
the idea that theincrease in human population would lead to famine and war
the concept that humanpopulation growth would lead to greater industry and prosperitythrough education
instituting fertilizeruse for agriculture

Question11.11. Ecology is ________.(Points : 1)

the study of how to solveenvironmental problems
the study of organismsand their interactions with each other and the environment
a subfield ofenvironmentalism
the study of the E. colifamily of bacteria

Question12.12. The scientific processis based on ________. (Points : 1)

observations thatresearchers keep in a scientific journal
testing hypotheses builton observation, and revising them based on results
intuitive understandingof natural laws and processes
the ancient writings ofHeraclitus

Question13.13. Which of the followingis an abiotic factor? (Points : 1)

Amphibians
Wood
Mammals
Water

Question14.14. In environmentalscience, "carrying capacity" means the ___________. (Points :1)

maximum population sizethat a given environment can sustain
average number of viableoffspring produced within a population
potential number ofspecies in a given area
limitation on the numberof species in an ecosystem

Question15.15. The Cuyahoga River madepeople aware of environmental problems because __________. (Points: 1)

people in manycommunities became sick when using water from the river
the drinking water inelementary schools near the river became contaminated
the river caught onfire
the river stoppedsupporting any plant or animal life

Question16.16. The conversion processwhere nitrogen gas combines with hydrogen to form ammonium ions,which is accomplished through the intense energy of lightening orwhen air in the top layer of soil comes into contact with certainbacteria, is known as ________. (Points : 1)

the carbon cycle
nitrogen fixation
ionic conversation
bacterial ionization

Question17.17. The fresh water wedepend on for survival accounts for approximately __________ of allwater on Earth. (Points : 1)

two-thirds
one-third
10%
3%

Question18.18. A paradigm is ________.(Points : 1)

a group of severalhypotheses that can be tested together
a dominant view inscience
the same as ahypothesis
synonymous with thescientific method

Question19.19. The degree of disorderin a substance, system, or process is called ________. (Points :1)

chaos
entropy
energy
electricity

Question20.20. A population is definedas ___________. (Points : 1)

a group of individuals ofmultiple, interacting species that live in a particular area
a group of similarspecies that inhabit various ecosystems
a group of individuals ofa single species inhabiting a particular area
(crude birth rate +immigration rate) - (crude death rate - emigration rate)

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Question 55.55. The fact that marsupials are not as diverse inSouth America as they are in Australia would be classified as whattype of evidence for evolution? (Points : 1.25)

biogeographical

anatomical

biochemical

fossil record

molecular evidence

Question 56.56. What is the name of the hypothesis that statesthat the very first living thing came from nonliving chemicals?(Points : 1.25)

cell theory

chemical evolution

Darwinian evolution

speciation

organic chemistry

Question 57.57. What structures are necessary for thereplication process to occur in a cell? (Points : 1.25)

enzymatic proteins

carbohydrates

lipids

starches

viruses

Question 58.58. The flipper of a whale and the wing of a birdare homologous structures. (Points : 1.25)

TRUE

FALSE

Question 59.59. Both the RNA-first and the protein-firsthypotheses must propose a manner for DNA to become the geneticmaterial as it is today. (Points : 1.25)

TRUE

FALSE

Question 60.60. The early atmosphere of Earth consisted mainlyof (Points : 1.25)

hydrogen, oxygen, and carbon dioxide.

oxygen, water vapor, and carbon monoxide.

water vapor, nitrogen, and carbon dioxide.

hydrogen, carbon monoxide, and nitrogen.

water vapor, hydrogen, and carbon dioxide.

Question 61.61. Which of the following biogeochemical cycles isa sedimentary cycle? (Points : 1.25)

carbon

nitrogen

phosphorus

water

ice

Question 62.62. What two characteristics define a biome? (Points: 1.25)

temperature and the types of plants found there

amount of precipitation and the types of plantsfound there

temperature and rainfall

latitude and rainfall

altitude and temperature

Question 63.63. The atmosphere would be considered whatcomponent of a chemical cycle? (Points : 1.25)

reservoir

exchange pool

biotic community

source

none of these

Question 64.64. Are humans capable of upsetting globalbiogeochemical cycles with their activities? (Points : 1.25)

YES

Question 65.65. The richest marine ecosystems are those in theopen water where large fish abound. (Points : 1.25)

TRUE

FALSE

Question 66.66. What is involved in the process ofdenitrification? (Points : 1.25)

conversion of nitrogen gas to ammonium

conversion of nitrogen gas to nitrate

conversion of ammonium to nitrate

conversion of nitrite to nitrate

conversion of nitrate to nitrogen gas

Question 67.67. What is the loss of water from plants called?(Points : 1.25)

runoff

precipitation

evaporation

transpiration

transference

Question 68.68. Decomposers perform a valuable service becausethey recycle nutrients. (Points : 1.25)

TRUE

FALSE

Question 69.69. There is more nitrogen gas in the atmospherethan there is oxygen. (Points : 1.25)

TRUE

FALSE

Question 70.70. Which of the following defines an ecosystems?(Points : 1.25)

a group of organisms of the same speciesinteracting together

all of the living organisms in an area interactingtogether

all living organisms and the nonliving environmentinteracting together

aspects of the nonliving environment interactingtogether

all the places on Earth where living organisms canbe found

Question 71.71. In MDCs, many people do not eat enough protein.(Points : 1.25)

TRUE

FALSE

Question 72.72. The age structure diagram of MDCs is shaped like(Points : 1.25)

a pyramid.

an inverted pyramid.

a rectangle.

an oval.

a cube.

Question 73.73. The biggest problem in moving toward asustainable society with the LDCs is overconsumption. (Points :1.25)

TRUE

FALSE

Question 74.74. A sustainable society is one that provides allof the goods and services desired by humans. (Points : 1.25)

TRUE

FALSE

Question 75.75. In order to have a negative population growthrate, (Points : 1.25)

the birthrate must exceed the death rate.

the biotic potential of the population mustincrease.

the death rate must exceed the birth rate.

the carrying capacity for the population mustincrease.

only replacement reproduction can occur.

Question 76.76. Why should pregnant women and small children noteat certain fish? (Points : 1.25)

herbicide contamination

mercury contamination

pesticide contamination

lead contamination

PCB contamination

Question 77.77. What do hydropower and wind power have incommon? (Points : 1.25)

Both require the building of dams.

Both lead to an increase in greenhouse gasemissions.

Both are renewable energy sources.

Both result in the depletion of fossil fuels.

Both require the use of photovoltaic cells.

Question 78.78. Which organism would be most impacted bybiomagnification? (Points : 1.25)

eagles

rabbits

wheat plants

earthworms

corn

Question 79.79. Most of the freshwater in the world is used for(Points : 1.25)

drinking.

bathing.

irrigation.

watering lawns.

industrial needs.

Question 80.80. Which of the following is not associated withgroundwater depletion? (Points : 1.25)

subsidence

sinkholes

saltwater intrusion

lowering of the water table

sediment buildup

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Biology 1001A Lecture Notes - Radiant Energy, Micronutrient, Heterotroph

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