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chemistry test 2
31問 • 1年前
  • ユーザ名非公開
    • 通報

    問題一覧

  • 1

    _____ is the process in w hi g the solar radiation is converted by plants into chemical energy

    photosynthesis

  • 2

    in the greenhouse effect ____ is converted into ____

    solar radiation into heat

  • 3

    biomass is the total mass of ___

    all life

  • 4

    the plants remove____ from the atmosphere and incorporate the ____ into their own structures

    carbon dioxide, carbon

  • 5

    the concentration of CO2 in the atmosphere is

    rising

  • 6

    as a consequence earths temperature is

    rising

  • 7

    what is the main reason for the increase of carbon dioxide amount in the atmosphere

    fossil fuels being burned

  • 8

    give three features that show that the increase of the tempature on earth

    earlier or longer seasons, melting of ice caps, species going to higher altitudes and elevations

  • 9

    define biomass

    renewable organic material that comes from plants and animals

  • 10

    why is there acid rain

    when the ph is lower than 5.6 and because of pollution

  • 11

    what region in north america are there more acid rains

    my state with a ph of 4.1

  • 12

    give 2 environmental mischief related to acid rains

    the loss of forest and aquatic disruption

  • 13

    a ph of 10 is

    basic

  • 14

    the ph of gastric juices is neutral

    false

  • 15

    what are the major atmospheric pollutants

    carbon monoxide and oxides of sulfur and nitrogen

  • 16

    define pollution

    an excess of substance generated by human activity

  • 17

    an example of a major air pollution disaster

    the great smog of london 1952

  • 18

    CO2 is a

    green house gas

  • 19

    ozone is:

    ozone protects the earth from uv

  • 20

    what is the effect of CFC on the environment

    it destroys the ozone layer

  • 21

    for humans how many pairs of chromosomes are present in each cell

    23 pairs

  • 22

    what is the structure of dna

    a double stranded helix

  • 23

    what is called the genetic informayion contained in DNA

    genetic code

  • 24

    give one use of DNA

    the information for life

  • 25

    what are the four nucleotides composing the DNA

    adenine, thymine, cytosine, guanine

  • 26

    how do they bind to one another

    a pairs with t and g pairs with c

  • 27

    what experimental technique showed the structure of DNA

    x-raycrystallography

  • 28

    using the nucleotide affinités principle explain how dna is replicating

    two dna strands separate a binds to t and c binds to g

  • 29

    proteins are made of

    amino acids

  • 30

    what moleculespell out the sequence of protein

    DNA

  • 31

    what is a mutation

    a change in dna frequence

    • Chemistry test 1

    Chemistry test 1

    ユーザ名非公開 · 87問 · 1年前

    Chemistry test 1

    Chemistry test 1

    87問 • 1年前
    ユーザ名非公開

    問題一覧

  • 1

    _____ is the process in w hi g the solar radiation is converted by plants into chemical energy

    photosynthesis

  • 2

    in the greenhouse effect ____ is converted into ____

    solar radiation into heat

  • 3

    biomass is the total mass of ___

    all life

  • 4

    the plants remove____ from the atmosphere and incorporate the ____ into their own structures

    carbon dioxide, carbon

  • 5

    the concentration of CO2 in the atmosphere is

    rising

  • 6

    as a consequence earths temperature is

    rising

  • 7

    what is the main reason for the increase of carbon dioxide amount in the atmosphere

    fossil fuels being burned

  • 8

    give three features that show that the increase of the tempature on earth

    earlier or longer seasons, melting of ice caps, species going to higher altitudes and elevations

  • 9

    define biomass

    renewable organic material that comes from plants and animals

  • 10

    why is there acid rain

    when the ph is lower than 5.6 and because of pollution

  • 11

    what region in north america are there more acid rains

    my state with a ph of 4.1

  • 12

    give 2 environmental mischief related to acid rains

    the loss of forest and aquatic disruption

  • 13

    a ph of 10 is

    basic

  • 14

    the ph of gastric juices is neutral

    false

  • 15

    what are the major atmospheric pollutants

    carbon monoxide and oxides of sulfur and nitrogen

  • 16

    define pollution

    an excess of substance generated by human activity

  • 17

    an example of a major air pollution disaster

    the great smog of london 1952

  • 18

    CO2 is a

    green house gas

  • 19

    ozone is:

    ozone protects the earth from uv

  • 20

    what is the effect of CFC on the environment

    it destroys the ozone layer

  • 21

    for humans how many pairs of chromosomes are present in each cell

    23 pairs

  • 22

    what is the structure of dna

    a double stranded helix

  • 23

    what is called the genetic informayion contained in DNA

    genetic code

  • 24

    give one use of DNA

    the information for life

  • 25

    what are the four nucleotides composing the DNA

    adenine, thymine, cytosine, guanine

  • 26

    how do they bind to one another

    a pairs with t and g pairs with c

  • 27

    what experimental technique showed the structure of DNA

    x-raycrystallography

  • 28

    using the nucleotide affinités principle explain how dna is replicating

    two dna strands separate a binds to t and c binds to g

  • 29

    proteins are made of

    amino acids

  • 30

    what moleculespell out the sequence of protein

    DNA

  • 31

    what is a mutation

    a change in dna frequence