Nitrogen

What is the process that turns nitrogen into ammonia?

• Assimilation

• Nitrogen Fixation

What is the process called when atmospheric nitrogen is converted to nitrogenous compounds?

• Nitrogen transformation

• Nitrogen conversion

• Nitrogen fixation

• Nitrogenation

How do nitrates go back to atmospheric nitrogen in the nitrogen cycle?

• By animal consumption

• By plant absorption

• By water evaporation

• By lightning strikes

What is the name of the process where nitrates are converted back to atmospheric nitrogen?

• Denitrification

• Nitrogen transformation

• Nitrogen fixation

• Nitrogenation

What percentage of the air is constituted by nitrogen?

• 65%

• 78%

• 90%

• 82%

Where does Rhizobium bacterium live in leguminous plants?

• Root nodules

• Stem

• Flowers

• Leaves

Tags

NGSS.MS-LS2-3

What do plants use nitrates for?

• To make vitamins

• To make lipids

• To make carbohydrates

• To make proteins

Tags

NGSS.HS-LS1-6

What is the name of the bacteria that convert ammonia to nitrates?

• Nitrogenous bacteria

• Decomposing bacteria

• Nitrogen-fixing bacteria

• Nutrifying bacteria

What is the main source of nitrogen fixation other than the action of bacteria?

• Photosynthesis

• Lightning strikes

• Decomposition

• Respiration

Tags

NGSS.MS-LS2-3

What do animals eat to get proteins in the nitrogen cycle?

• Insects

• Seeds

• Plants

• Fruits