Which type of operon is off by default, but may be turned on…

Which type of operon is off by default, but may be turned on in the presence of certain molecules and is typically used for anabolic processes?   Terms List activation energy active site aerobic respiration allosteric site amphibolic anabolism anaerobic respiration anticodon apoenzyme bacterial conjugation catabolism chemiosmosis codon cofactors competitive constitutive denature diploid DNA helicase DNA ligase DNA polymerase DNA template strand electron transport chain endergonic exergonic feedback inhibition fermentation flavin adenine dinucleotide (FAD) gene genome genotype glycolysis gyrases and topoisomerases haploid holoenzyme inducer inducible kinases Krebs cycle lagging strand leading strand messenger RNA nicotinamide adenine dinucleotide (NAD+) nicotinamide adenine dinucleotide phosphate (NADP+) noncompetitive non-constitutive nucleoid nucleoside triphosphates Okazaki fragments oxidation oxidative phosphorylation Pentose phosphate pathway phenotype plasmid primase primer promoter reduction release factor replication bubble repressible ribosomal RNA ribozymes RNA coding region RNA polymerase saturation point semi-conservative stabilizing proteins substrate substrate level phosphorylation terminator transduction transfer RNA transformation translation

Directions: Read the paragraph and then answer the question…

Directions: Read the paragraph and then answer the question that follows.Throughout history, dance has been a significant part of many cultures. Theearliest recorded history of dance can be found in India’s Rock Shelters ofBhimbetka paintings, where dancing figures are shown on the walls. Dance wasan important part of ceremonies and rituals in many ancient civilizations, such asthe Egyptians as shown in their drawings dating from 3300 B.C. Throughouthistory, dance has evolved into an art form for creative expression, and there arenow more opportunities for careers in dance than in the past.Professional dancers are often employed in the entertainment field, where they arepaid stage performers for various types of productions. Dance coaches are chieflyinvolved with competitive dancing, and spend most of their time teaching danceto tournament dancers. Choreographers are usually people with college degrees indance. They create original dances and are often employed in the entertainmentfield, especially in movies and theater. Professional ballet dancers may spendyears in formal training, whereas someone who does folk dances in a troupe maynot have any professional training. Dance is art form for creative expression thatoffers many opportunities for professional careers.Question:  What is the central point of the selection?