Quiz - Topic 2.3 HL
This quiz features a variety of multiple choice and true/false questions. Each time you select this quiz a new assortment of questions will appear.
This quiz has 10 questions on Topic 2.3 for HL students.
Which of the following is an energy store in the nitrogen cycle?
Fossil fuels are the only store of nitrogen in this list. The others are how nitrogen flows from one store to another.
Which soil conditions can contribute to denitrification?
Denitrification only happens in anaerobic conditions, such as soils that are waterlogged. In waterlogged, anaerobic soils, plant growth is reduced or stopped and denitrification and leaching take place. In these soils, insectivorous plants (for example, pitcher plants and sundews) can capture and digest insects and use them as a nitrogen source.
Which of the following is the conversion of ammonia into nitrates?
Nitrogen fixation is conversion of nitrogen from the atmosphere into ammonia.
Nitrification is conversion of ammonia to nitrates.
Denitrification is conversion of nitrates to nitrogen.
Decomposition is the conversion of amino acids into ammonium.
Which flow in the nitrogen cycle uses bacteria to release nitrogen into the atmosphere from water bodies?
Although both nitrogen fixation and denitrification makes use of bacteria, only denitrification returns nitrogen gas to the atmosphere. Nitrogen fixation removes it from the atmosphere.
The main processes how nitrogen enters and leaves food webs are ...
The main processes how nitrogen enters and leaves food webs is by nitrogen fixation by bacteria from the atmosphere into the soil and denitrification by bacteria of nitrates back into nitrogen gas.
Which flow does NOT take place in the nitrogen AND carbon cycle?
Consumption of food energy, decomposition and excretion of waste from organisms transform both nitrogen and carbon from one store to another. Respiration only involves the release of carbon dioxide from organisms.
The calcium carbonate from reef-building corals and molluscs can be fossilised in which of the following?
Limestone is the largest store of carbon in Earth systems. Not all limestone is formed by fossilisation of animal remains; it can also be formed by both biological and non-biological processes.
Methane oxidises into which of the following in the atmosphere?
Methane has a residence time of about 10 years in the atmosphere and is eventually oxidised to carbon dioxide.
Which of the following is an energy store in the nitrogen cycle?
Fossil fuels are the only store of nitrogen in this list. The others are how nitrogen flows from one store to another.
Which flow does NOT take place in the nitrogen AND carbon cycle?
Consumption of food energy, decomposition and excretion of waste from organisms transform both nitrogen and carbon from one store to another. Respiration only involves the release of carbon dioxide from organisms.