Enclosed by the chloroplast membrane is the stroma, a semi-fluid material that contains dissolved enzymes and comprises most of the chloroplast's volume. Since, like mitochondria, chloroplasts possess their own genomes (DNA), the stroma contains chloroplast DNA and special ribosomes and RNAs as well. In higher plants, lamellae, internal membranes with stacks (each termed a granum) of closed hollow disks called thylakoids, are also usually dispersed throughout the stroma.
The Professional Transport Operator is responsible for maintaining his/her ability to provide driving services throughout Canada and the USA at all times.  Understands and complies with all customs regulations and has no restrictions in his/her ability to enter or exit the USA because of legal or immigration issues.HYSICAL DEMANDS: A professional transport operator requires physical agility and stamina for pre-and post-trip inspections, hand-bombing and manual adjustments to equipment, and mental concentration for long periods of sitting and driving. Other physical demands include:  Sitting (constant for driving truck).
Professional learning community. A professional learning community (PLC) is a method to foster collaborative learning among colleagues within a particular work environment or field. It is often used in schools as a way to organize teachers into working groups of practice-based professional learning. Contents.