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Bio 100 Test 3 > Old Test > Flashcards

Old Test Flashcards

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Biology 101 flashcards
1
Q

T or F. Temperature increases due to global climate change have been greatest closest to the poles

A

true

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2
Q

The biological species concept requires sexual reproduction. t or f

A

true

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3
Q

True or false. natural selection prepares organisms for future changes in the environment

A

false

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4
Q

t or f phylogenetic trees are fossilized trees

A

false

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5
Q

t or f in the food chaing grass to antelop to human to lion the antelope is a herbivore and producer

A

false

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6
Q

True or false natural selection works on variation alreay present in population

A

true

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7
Q

unlike other primates, human populations are parasitized by only one lousy louse species

A

false

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8
Q

organisms evolve structures that they need true or false

A

false

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9
Q

once carbon enters the plant it can be turned into energy for plant growth t or f

A

false

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10
Q

t or f once carbon enters the plant it can be consumed by an insect feeding on the plant and become part of the insect’s body

A

true

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11
Q

t or f once carbon enters a plant it can exit as co2

A

true

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12
Q

what can create new alleles

A

mutation

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13
Q

speciation, or the formation of new species is

A

responsible for the diversity of life

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14
Q

in most developing countries

A

birth rates are much higher than death rates so the population is growing rapidly

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15
Q

the rate at which an ecosystems producers convert solar energy to chemical energy stored in biomass is caled

A

primary productivity

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16
Q

what is a representation of homologous structures

A

wing of a bat and flipper of a whale

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17
Q

what does evolutionary fitness measure

A

relative reproductive success

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18
Q

what is a main idea of darwin that he advanced in his works

A

species change over time, the earth is appx 6000 yrs old and unchanging

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19
Q

mutations arise by….

A

chance due to random changes in nucleotide sequences

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20
Q

in oceans global warming has

A

made the water more acidic

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21
Q

in what way does energy flow differ from chemical cycling

A

energy flow is unidirectional, chemical elements can be recycled

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22
Q

accodring to the logistic growth model, what happens to a population when the sie of the population reaches carrying capacity

A

growth rate is zero

23
Q

If current trends in global warming continue for the next 50 years where will the greates effects of global warming likely be felt

A

greenland

24
Q

what type of consumer is a white tailed deer

A

herbivore

25
Q

natural selection can be defined as

A

a process in which organisms with certain inherited traits are more likely to survive and reprodue than individuals with other traits

26
Q

the total collection of alleles in a population at any one time make up that population’s

A

gene pool

27
Q

genetic drift is the result of

A

chance

28
Q

what level of ecology is concerned with the biotic and abiotic aspects of an environment

A

ecosystem

29
Q

which nutrients often limit the distribution and abundance of photosyntheci organisms

A

nitrogen and phosphorus

30
Q

what is a factor that operates in a density dependent manner

A

food supply

31
Q

co2 in the atmosphere is absorbed by ___ and converted into biomass

A

photosynthetic organisms

32
Q

the effect of deforestation has

A

increased the amount of carbon dioxide in the atmosphere

33
Q

two populations that have been seperated by a river are most likely to become seperate species if

A

genes controlling molecules on the surface of the sperm that bind the egg receptors are different in the tow populations

34
Q

____ is a directive process, while ___ is a random process. Both are considered ___ processes.

A

natural selection, genetic drift, evolutionary

35
Q

speciation, or the formation of new species is

A

responsible for the diversity of life

36
Q

the greenhouse effect causes an increase in global temperatures this is primarily due to

A

co2 and other greenhouse gases slowing the escape of heat from earth

37
Q

What is an abiotic reservoir of nitrogen

A

atmospheric N2

38
Q

microevolution refers to the genetic changes in…

A

populations of organisms

39
Q

if two animals are able to interbreed but produce sterile hybrids these two animals belong to

A

different species

40
Q

what type of structures found in two different species suggests divergent evolution

A

homologous structures

41
Q

fireflies that cannot communicate properly with each other (wrong flash rate) for mating is an example of

A

behavioral isolation

42
Q

in the oceans global warming has…

A

made the water more acidic.

43
Q

according to the logistic growth model what happens to a population when the size of the population reaches carrying capacity

A

growth rate is zero

44
Q

what must occur during a period of geographic isolation in order for two or more sibling species to remain genetically distinct following their geographic reunion in the same home range

A

reproductive isolation

45
Q

hybridization, such as mules and ligers is an example of…

A

postzygotic isolation

46
Q

tropical rainforests contain ____ percent of all life forms on earth

A

40-50%

47
Q

recovery from extinction takes about

A

10 million years

48
Q

what does evolutionary fitness measure

A

relative reproductive success

49
Q

What important processes drive the carbon cycle

A

photosynthesis and respiration

50
Q

in a food web an eagle is most likely to be a ___ consumer

A

tertiary or quaternary

51
Q

the affect of deforestation has been to ____

A

increase the amount of carbon dioxide in the atmosphere

52
Q

the energy for nearly every organism in almost every ecosystem comes from…

A

the sun

53
Q

natural selection can be defined as

A

a process in which organisms with certain inherited traits are more likely to survive and reproduce than individuals with other traits.

54
Q

a reproductive barrier that prevents a species from mating is an example of

A

a prezygotic barrier

Bio 100 Test 3 (2 decks)

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