Which statement best describes an individual enzyme? a. it lowers the activation energy of a reaction and affects many different types of reactions. b. it raises the activation energy of a reaction in the affects many different types of reactions . c. it lowers the activation energy of a reaction in affects only very specific reactions. d. it raises the activation energy of a reaction affects only very specific reactions.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

lesson summarykaryotypes a genome is the full set of all the genetic information that an organism carries in its dna. chromosomes arebundles of dna and protein found in the nucleus of a eukaryotic cell.