strict sense include the green algae , and land plants that emerged within them, including stoneworts . the relationships between plant groups are still being worked out, and the names given to them vary considerably. the clade viridiplantae encompasses a group of organisms that have cellulose in their cell...
] vascular land plants make lignin , a polymer used to strengthen the secondary cell walls of xylem tracheids and vessels to keep them from collapsing when a plant sucks water through them under water stress. lignin is also used in other cell types like sclerenchyma fibres that provide structural support...
] vascular land plants make lignin , a polymer used to strengthen the secondary cell walls of xylem tracheids and vessels to keep them from collapsing when a plant sucks water through them under water stress. lignin is also used in other cell types like sclerenchyma fibres that provide structural support...
component , molecular function enzyme classification transporter classification source organism genome location mesh (medical subject headings) scop and cath start browsing statistics search pdb statistics the pdb statistics page lists the current holdings in the pdb and various growth statistics and...
only a fermentation agent like yeast can give bread its organoleptic quality. bread is symbolical food which, in spite of its various compositions, is appreciated worldwide thanks to a special manufacturing process: fermentation. between 1857 and 1863 louis pasteur demonstrated the role of yeast as a micro-organism...