EEMB 127 Chapter Notes - Chapter 1: Hydrophile, Germination, Phloem

• School: UCSB
• Department: Ecology, Evolution & Marine Biology
• Course: EEMB 127
• Professor: Mazer

Document Summary

Tissues a(cid:396)e k(cid:374)o(cid:449)(cid:374) to (cid:271)e a g(cid:396)oups of (cid:272)ells o(cid:396) (cid:862)agg(cid:396)egate of (cid:272)ells(cid:863) that ha(cid:448)e a si(cid:373)ila(cid:396) st(cid:396)u(cid:272)tu(cid:396)e a(cid:374)d a(cid:272)t together to perform a specific function. Group of cells are associated with each other in various way, forming and organizing into structural and functional units known as tissues. There are three tissue systems, which are larger units, known as the ground tissue system, vascular tissue system, and dermal tissue system. The cell wall is the outermost boundary of a cell in which it contains about 40-60% (cid:272)ellulose (cid:894)the pla(cid:374)t"s cell wall main component). Cellulose, a carbohydrate, is mainly composed of long strands of repeating monomers of glucose attached end to end and is the most abundant polymer on earth. Mi(cid:272)(cid:396)ofi(cid:271)(cid:396)il a(cid:396)e (cid:272)ellulose st(cid:396)a(cid:374)ds that a(cid:396)e t(cid:449)isted togethe(cid:396) i(cid:374)to a st(cid:396)o(cid:374)g, th(cid:396)eadlike (cid:272)o(cid:373)ple(cid:454) a g(cid:396)oups of molecules, linearly arranged, that comprise cell walls whereas, macrofibrils contain many microfibrils. Cellulose is made of repeat units of the monomer glucose.