Abdul Archive

Cell Wall- Chemical Composition

MACROMOLECULAR COMPONENTS OF THE CELL WALL Cellulose Is the Principal Component of Plant Cell Walls The principal component of plant cell walls is cellulose, a polysaccharide with the empirical formula (C6H10O5)n. Its molecules are linear chains of (1→4)β-linked-D-glucan (repeating monomers of glucose attached end …

Cell Wall

The presence of a cell wall, above all other characteristics, distinguishes plant cells from animal cells. Its presence is the basis of many of the characteristics of plants as organisms. The cell wall is rigid and therefore limits the size of …

Sources and Sinks

Sources include any exporting organs, typically mature leaves, that are capable of producing photosynthate in excess of their own needs. The term photosynthate refers to products of photosynthesis. Another type of source is a storage organ during the exporting phase …

PATHWAYS OF TRANSLOCATION

The two long-distance transport pathways—the phloem and the xylem—extend throughout the plant body. The phloem is generally found on the outer side of both primary and secondary vascular tissues. In plants with secondary growth the phloem constitutes the inner bark. The …

Translocation in the Phloem

SURVIVAL ON LAND POSES SOME SERIOUS CHALLENGES to ter-restrial plants, foremost of which is the need to acquire and retain water. In response to these environmental pressures, plants evolved roots and leaves. Roots anchor the plant and absorb water and nutrients; leaves absorb …

Advanced Algorithm

This course is a first-year graduate course in algorithms. Emphasis is placed on fundamental algorithms and advanced methods of algorithmic design, analysis, and implementation. Techniques to be covered include amortization, randomization, fingerprinting, word-level parallelism, bit scaling, dynamic programming, network flow, …

Advanced Operating Systems

Advanced Operating Systems is a master-level course that addresses a broad range of topics in operating system design and implementation, including operating systems structuring synchronization, communication and scheduling in parallel systems distributed systems, their communication mechanisms, distributed objects and middleware …