KSSM_FORM 5_CHAPTER 2_SUBCHAPTER 2.3

Air is made up of _______ of nitrogen.

• 21%

• 1%

• 78%

• 0.03%

Plant can absorb nitrogen directly from the air.

• True

• False

Which of the following is not the process that add nitrate ion to the soil?

• volcanic eruption

• glacier

• lightning

• Nitrogen fixation.

Tags

NGSS.MS-LS2-4

Which of the following is not the processes that extract nitrate ions from the soil?

• Denitrification

• Nitrate leaching

• absorbing nitrate ions from soil

• combustion

Nitrogen-fixing bacteria can convert nitrogen in the air into nitrate ions.

• True

• False

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Nitrifying bacteria convert ammonium compound into nitrate ions then nitrate ions.

• True

• False

Tags

NGSS.MS-LS2-3

Denitrifying bacteria in soil will convert nitrite ion into nitrogen.

• True

• False

Tags

NGSS.MS-LS2-3

Nitrate leaching is a man made process.

• True

• False

Tags

NGSS.MS-ESS3-4

Lightning convert directly from nitrogen into nitrate ions

• True

• False

Tags

NGSS.MS-LS2-3

Protein is used to build new cells and repair damaged cells.

• True

• False

Tags

NGSS.MS-LS1-2