Matter and Cycling

Photosynthesis and cellular respiration are important because

• Ms. Matthews seems obsessed with them

• they are the building blocks of life

• they allow for the energy of lightning to be used on Earth

• they cycle matter and energy between autotrophs and heterotrophs

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Carbon is part of __________.

• proteins
• fats
• carbohydrates
• all of the above

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The following are part of the carbon cycle EXCEPT _________.

• respiration

• precipitation

• decomposition

• photosynthesis

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Decomposers can release __________ into the soil

• hydrogen

• oxygen

• nitrogen

• helium

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Bacteria in soil change __________ into nitrates that plants can use.

• H₂

• O₂

• N₂

• He₂

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Plants rely heavily on _________ on the nitrogen cycle to incorporate nitrogen into organic compounds.

• bacteria

• viruses

• fungi

• lightning

Phosphorus is needed for the production of...

• ATP (usable energy form)

• Nitrates

• Glucose

• Carbon Dioxide

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How is the carbon cycle similar to the water cycle ?

• both involve liquid substances falling to Earth from the atmosphere.

• Neither process works at low temperatures.

• Both involve the transfer of substances between animals, plants, and the Earth

• Both involve the transfer of substances between the Earth and outer space.

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How do animals add carbon dioxide to the atmosphere?

• Through breathing.

• Through evaporation.

• Through their skin.

• Through transpiration.

What effect does the sun have on surface water?

• it causes it to boil

• it causes it to rain

• it causes it to sink

• it causes it to evaporate

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