Biogeochemical Cycles-Nitrogen/Phosphorus

Front

Organisms use nitrogen to form: carbohydrates and lipids, proteins and lipids, lipids and nucleic acids, proteins and nucleic acids

Back

proteins and nucleic acids

Front

The most abundant gas within the atmosphere is: carbon., hydrogen., oxygen., nitrogen.

Back

nitrogen.

Front

The conversion of nitrogen gas to a form that can be used by plants is called

Back

nitrogen fixation.

Front

Where do animals get nitrogen from?

Back

from plants they eat

Front

Where is the majority of carbon dioxide on our planet dissolved?

Back

oceans

Front

What are the main ingredients of most fertilizers?

Back

nitrogen, phosphorus, and potassium

Front

Building proteins and DNA is the reason organisms need what substance? Options: Water, Carbon, Nitrogen, Calcium

Back

Nitrogen

Front

This is released by the weathering of rocks. It is known as a long term cycle.

Back

Phosphorus

Front

How nitrogen is "fixed" into useable form for plants?

Back

through action of bacteria & lightning

Front

Which of the following statements is true of the phosphorus cycle? Options: Phosphorus enters the atmosphere as phosphates., The phosphorus cycle utilizes the processes of erosion, and weathering., Phosphates are used in carbohydrate and glucose storage., The phosphorus cycle utilizes bacteria to breakdown phosphates and make them available for plants.

Back

The phosphorus cycle utilizes the processes of erosion, and weathering.