❞ كتاب lec11_12slid ❝ ⏤ كاتب غير معروف

Biologically

Biology is a natural science that is concerned with the study of life, its various forms and its function, how these organisms interact with each other and with the surrounding environment. The word biology in Greek is made up of two words: bio (βίος) meaning life. And loggia (-λογία) means science or study. Biology: the similarity of vegetation and animal cover on the edges of the African and American states, and the existence of the same fossil.

Branches of biology
Biology is an ancient science thousands of years old and modern biology began in the nineteenth century. This science has multiple branches. Among them are:

Anatomy
Botany
Biochemia
Biogeography
Biofisia
Cytology or cell science
Ecology or environmental science

نبذه عن الكتاب:

Proteoglycans (PGs) and
glycosaminoglycans (GAGs)
a) GLYCOSAMINOGLYCANS (GAGs) form gels
i) polysaccharide chains of disaccharide units
ii) too inflexible and highly charged to fold in a compact way
iii) strongly hydrophilic
iv) form extended conformations and gels
v) osmotic swelling (charge repulsion)
vi) usually make up less than 10% of ECM by weight
vii) fill most of the ECM space
viii) four main groups
a. hyaluronan
b. chondroitin sulfate and dermatin sulfate
c. heparin sulfate and heparin
d. keratin sulfate

Biology
Human biology
Who is the founder of biology?
The importance of biology
Areas of work in the field of biology
Theories of biology
Research on biology for the first grade of secondary school
Human biology