Carbon and Nitrogen Cycle

Carbon and Nitrogen Cycle

Multiple Select

This is necessary for all organisms. They both move between consumers, producers and the atmosphere in a continuous cycle. (select all that appy)

• Carbon

• Cytoplasm

• Oxygen

Multiple Choice

Organisms that make their own food.

• Producers

• Consumers

• omnivores

Multiple Choice

An organism that consumes other plants or organisms to survive.

• Producer

• Consumer

• Omnivore

Multiple Choice

An important compound that makes up plants and animals (as well as almost everything else)

• silicone

• Helium

• Oxygen

• carbon

Multiple Select

The carbon that is from fossilized organisms is made to form what three types of fossil fuels (select all that apply)

• Oil

• Natural gas

• plasma

• coal

Multiple Choice

The two most important processes that drive the carbon oxygen cycle are

• Cellular respiration and Photosynthesis

• Photosynthesis and Precipitation

• photosynthesis and evaporation

• precipitation and evaporation

Multiple Choice

carbon dioxide + water → sugar + oxygen

(What is this the formula for?)

• Cellular respiration

• photosynthesis

• denitrification

• nitrogen fixation

Multiple Choice

Which of these best describes the role of plants in the carbon-oxygen cycle?

• to absorb carbon dioxide from the atmosphere and use it to make sugar.

• to absorb oxygen from the atmosphere and release carbon dioxide into the atmosphere

• to absorb carbon dioxide from the atmosphere and release it back into the atmosphere

• to absorb oxygen from the soil and use it to make carbon dioxide for sugar production

Multiple Choice

Which arrow, or series of arrows, represent the movement of atmospheric oxygen (O2) during photosynthesis?

• only arrows 1 and 6

• only arrow 1

• only arrows 1 and 2

• only arrow 6

Multiple Choice

sugar + oxygen → carbon dioxide + water

(What is this the formula for?)

• Photosynthesis

• Cellular respiration

• evaporation

• None of the above

Multiple Choice

Which arrow, or series of arrows, represents the movement of atmospheric oxygen (O2) during respiration?

• only arrows 2 and 6

• only arrow 2

• only arrows 1 and 6

• only arrow 6

Poll

How are we feeling about the carbon cycle?

• Great

• Getting there

• Needs some work

Multiple Choice

a process in which nitrogen and nitrogen compounds go through chemical changes. These chemical changes are important so that plants and animals can use nitrogen to sustain life as it is cycled through the environment.

• Carbon cycle

• Nitrogen cycle

• Water Cycle

Multiple Choice

Nitrogen is the most abundant gas in the atmosphere so it is easy for us to pull as much nitrogen as we need straight from the air.

• True

• False

Multiple Choice

According to the picture which organism is responsible for nitrogen in the atmosphere being converted to a usable form?

• Cows

• Trees

• Bacteria

• Grass

Multiple Choice

What does it mean for nitrogen to be fixed.

• Nitrogen is held firmly in place

• Nitrogen is destroyed

• Nitrogen is changed into a usable form

• Nitrogen was broken but is now prepared.

Multiple Choice

This is when nitrogen is taken from a usable form and changed back into atmospheric nitrogen.

• Nitrogen fixation

• Denitrification

• Precipitation

• Respiration

Multiple Choice

Plants can absorb nitrates from the soil and use them to form important molecules such as

• carbon

• water vapor

• proteins

Multiple Choice

How do consumers get nitrogen?

• From photosynthesis

• From the organisms they eat

• from sheer luck

• By decomposing

Multiple Select

What are two ways that nitrogen can be released back into the soil from a plant or animal (check all that apply)

• waste

• by the animal respirating

• by decomposition

Multiple Choice

What role do decomposers play in the nitrogen cycle

• They break down dead and waste matter to return nitrogen to the soil.

• They cause harmful pollutants

• They assist the plants in photosynthesis

Multiple Choice

Many species of plants have nodes that are filled with nitrogen-fixing bacteria on their roots. The nitrogen that the bacteria "fix" is then used by the plant to build plant tissues. Where does most of the nitrogen that the bacteria use come from?

• The nitrogen is formed by chemical reactions taking place between different minerals in the soil.

• The nitrogen is absorbed into the soil from the atmosphere.

• The nitrogen is secreted by the plants through their root systems.

• The nitrogen is produced by the node's outer membrane.

Multiple Choice

Why is the nitrogen cycle important for the survival of organisms in an ecosystem?

• The nitrogen cycle recycles nitrogen through an ecosystem, making it available to all organisms.

• The nitrogen cycle allows all organisms in an ecosystem to consume nitrogen instead of consuming each other.

• The nitrogen cycle stores nitrogen in safe places, keeping it from entering an ecosystem.

• The nitrogen cycle keeps organisms from consuming nitrogen in their ecosystem.

Poll

How do you feel about the nitrogen cycle

• Great

• Getting there

• Needs work