âGaining confidence, one 160-foot fall at a time.â Thatâs how Canada-based organization 9 Lives Adventures describes bungee jumping for the wheelchair-bound.n their blog, 9 Lives founder Karim Ladki explains wheelchairs keep jumpers upright and prevent blood from rushing to the head. Wheelchair-bound jumpers also have a special bungee cord that attaches to the chairâs axles.
lac - resinlike substance secreted by certain lac insects; used in e.g. varnishes and sealing wax. seal, sealing wax - fastener consisting of a resinous composition that is plastic when warm; used for sealing documents and parcels and letters. shellac varnish, shellac - a thin varnish made by dissolving lac in ethanol; used to finish wood. animal product - a product made from animal material.
lac operon (lactose operon) is an operon required for the transport and metabolism of lactose in Escherichia coli and many other enteric bacteria. Although glucose is the preferred carbon source for most bacteria, the lac operon allows for the effective digestion of lactose when glucose is not available.n summary: 1  When lactose is absent then there is very little Lac enzyme production (the operator has Lac repressor bound to it). 2  When lactose is present but a preferred carbon source (like glucose) is also present then a small amount of enzyme is produced (Lac repressor is not bound to the operator).