AP BIOLOGY

Detailed explanation-1: -This process is called nitrification. Compounds such as nitrate, nitrite, ammonia and ammonium can be taken up from soils by plants and then used in the formation of plant and animal proteins.

Detailed explanation-2: -Plants absorb ammonium and nitrate during the assimilation process, after which they are converted into nitrogen-containing organic molecules, such as amino acids and DNA. Animals cannot absorb nitrates directly. They receive their nutrient supplies by consuming plants or plant-consuming animals.

Detailed explanation-3: -Plant roots absorb ammonium ions and nitrate ions for use in making molecules such as DNA, amino acids, and proteins. Organic nitrogen (the nitrogen in DNA, amino acids, proteins) is broken down to ammonia, then ammonium. Dramatically alter the rate of biotic nitrogen fixation.

Detailed explanation-4: -Nitrogen Assimilation in Plants. Plants absorb nitrogen from the soil in the form of nitrates and ammonium ions. Ammonium ions and nitrates are absorbed by the plants via their respective transporters. Nitrate after absorption is transported to the leaves and gets reduced to ammonia.

Detailed explanation-5: -Plants take up nitrate from the soil via the transporter proteins present in the root cell membrane. There are other nitrate transporters that are involved in moving nitrate within plants to different tissues as needed.