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Ag-Env 5.3
| Question | Answer |
|---|---|
| Most nitrogen is found where? | atmosphere |
| Which percentage of the atmosphere is nitrogen? | 78% |
| Nitrogen is used to produce what? | Proteins & DNA |
| Free nitrogen is converted into usable form through..? | nitrogen fixation |
| The majority of nitrogen fixation happens when_______ convert atmospheric nitrogen into ammonia. | bacteria |
| Ammonia is toxic to plants. The ammonia must be converted into a more useful form by _________ in the soil. | bacteria |
| Bacteria convert ammonia into nitrates for plants to uptake in a process known as ________. | nitrification |
| When a plant or animal dies, or an animal defecates, decomposers convert the nitrogen back into which form? | ammonium |
| Reduction of nitrates or nitrites by bacteria that usually results in the escape of nitrogen into the air is known as...? | denitrification |
| The nitrogen cycle has no beginning or end. | true |
| Consumers can get nitrogen directly from the atmosphere. | false |
| Plants and animals benefit from nitrogen-fixing bacteria. | true |
| Carbon is known as the element of _____. | life |
| Why is carbon known as the element of life? | it can form stable bonds |
| What are lipids, carbohydrates, proteins, and nucleic acids that carbon is the backbone of? | macromolecules |
| Carbon is the ________ of major macromolecules. | backbone |
| Plants and ____ take in carbon dioxide and convert it into ____ using sunlight and water. | algae, sugars |
| When fungi and bacteria decompose dead organisms and organic waste, they release organic compounds and __________. | carbon dioxide |
| Water is an important ______ in the body. | solvent |
| Water can evaporate from the leaves of plants through tiny holes called ________. | stomata |
| When water vapor condenses (when it is cooled), it forms...? | clouds |
| Nitrogen is an important component of ___ and ____. | DNA, RNA |
| What type of bacteria carry out nitrification? | nitrifying |
| Bacteria in the soil and root nodules of leguminous plants convert nitrogen gas into...? | ammonium ions |
| The process of turning ammonium ions into nitrates/nitrites is called...? | nitrification |
| Assimilation is the process of plants doing what? | taking nitrates from the soil |
| In this process, decomposers turn nitrogen compounds from dead organisms and organic waste into ammonium. | Ammonification |
| Phosphorous is used to make phospholipids which make up the...? | cell membrane |
| Weathering is the _______ and _________ breakdown of rocks. | physical, chemical |
| _______ is the geological process that moves rocks from oceans onto the land. | Uplift |
| Decomposers _______ phosphates from dead organisms. | recycle |
| Phosphate ions can dissolve in water and be transported in __________ __________ to water ways | surface runoff |
| Dead marine organisms get compacted by _________. | sediment |
| Sedimentation is the process of dead marine organisms being compacted by sediment and forming..? | sedimentary rock |
Created by:
megsch26