Exploring the Nitrogen Cycle

The video explains the nitrogen cycle, highlighting the role of bacteria in converting nitrogen gas into forms usable by plants and animals. It details the processes of nitrification and decomposition, emphasizing the importance of nitrates in protein synthesis. The video also addresses human impacts on the cycle, such as pollution, and suggests solutions like reducing car usage.

What is found inside the weird bumps on the roots of some plants?

• Bacteria

• Fungi

• Viruses

• Insects

Why can't humans and plants use nitrogen directly from the air?

• It is in a liquid form

• It is in a gaseous form

• It is too hot

• It is too cold

What do bacteria in plant nodules convert nitrogen gas into?

• Ammonia

• Nitrites

• Nitrates

• Proteins

Why can't most plants use ammonia directly?

• It is too expensive

• It is too toxic

• It is too rare

• It is too common

What is the process called when bacteria convert ammonia to nitrites and then to nitrates?

• Nitrification

• Nitrogenation

• Ammonification

• Denitrification

Tags

NGSS.MS-LS2-3

How do animals obtain the nitrates they need?

• By absorbing through skin

• By breathing air

• By eating plants or other animals

• By drinking water

Tags

NGSS.MS-LS2-3

What happens to nitrogen when plants and animals die?

• It becomes water

• It is released back into the air

• It turns into oxygen

• It disappears

Tags

NGSS.MS-LS2-3

What role do decomposers play in the nitrogen cycle?

• They absorb nitrogen from the air

• They convert nitrates to ammonia

• They break down dead matter and release nitrogen

• They create nitrogen gas

Tags

NGSS.MS-LS2-3

What human activity is mentioned as disrupting the nitrogen cycle?

• Driving too many cars

• Planting trees

• Fishing

• Using solar panels

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

What is one suggested way to help mitigate the disruption of the nitrogen cycle?

• Riding bikes more

• Cutting down trees

• Using more plastic

• Using more fertilizers