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i am pretty sure answer is A you got this
Light is to find the distance between planets called light years.
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a kinase is an enzyme that catalyzes the transfer of phosphate groups from high-energy, phosphate-donating molecules to specific substrates.
The body's use of signal transduction is to ultimately result in a cellular function.
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In cells. The increase in size and changes in shape of a developing organism depend on the increase in the number and size of cells that make up the individual. Increase in cell number occurs by a precise cellular reproductive mechanism called mitosis.
RNA plays central role in the pathway from DNA to proteins.