1. in the diagram below, what is not a part of an adp molecule? a. a b. b c. c d. d 2. in the diagram below, which part of the molecule must the bonds be broken to release energy and create adp? a. between a and b b. between a, b, and c c. between b and c d. between c and d

1. The right answer is D.

The diagram represents an ATP molecule.

ADP: adenosine diphosphate

ATP: adenosine triphosphate

ATP has one more phosphate than ADP. So more energy, usually in reaction that require energy, ATP is hydrolyzed to ADP + Pi (inorganic phosphate).

Basically, adenosine carries energy (for muscles, syntheses, etc.) in the form of phosphates, in ADP there are two, and in ATP there are three. So we can go from one to the other by adding or removing a phosphate.

2. The right answer is D.

The hydrolysis of ATP to ADP (adenosine diphosphate) and Pi (inorganic phosphate) is a strongly exothermic reaction. The repulsion between the negative charges of the adjacent phosphate groups makes the bonds between the first and second phosphate groups and the bonds between the second and third phosphate groups unstable. The breaking of these bonds causes a release of energy.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.