Some bacteria live in the roots of plants like soybeans and peas. what is the role of these bacteria in the nitrogen cycle? to absorb nitrogen-containing compounds from the soil to release free nitrogen into the atmosphere to break down nitrogen-containing compounds in dead organisms to convert free nitrogen into usable nitrogen

The correct answer would be "to convert free nitrogen into usable nitrogen".

Symbiotic bacteria such as Rhizobium live in the roots of the plants like soybean and peas help in the process of biological nitrogen fixation.

It is the process by which bacteria convert the atmospheric nitrogen to the form which can be used easily by the plants. In return, they get energy-producing nutrients such as glucose.

The reaction is usually catalyzed by the enzyme nitrogenase.

The chemical reaction can be written as:

N₂ + 16ATP + 8e⁻ + 8H⁺ → 2NH₃ + H₂ + 16ADP + 16Pi

answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation:

the answer to your question is:

c. complementary base-pairing