KINESIOL 3Y03 Lecture 2: Carbohydrates I

• School: McMaster University
• Department: Kinesiology
• Course: KINESIOL 3Y03
• Professor: Danny M.Pincivero

Document Summary

What is a carbohydrate? (cid:120) (cid:44)(cid:86)(cid:3)(cid:68)(cid:3)(cid:179)(cid:75)(cid:92)(cid:71)(cid:85)(cid:68)(cid:87)(cid:72)(cid:3)(cid:82)(cid:73)(cid:3)(cid:70)(cid:68)(cid:85)(cid:69)(cid:82)(cid:81)(cid:180) (cid:120) manufactured by plants. 6 co2 + 6 h2o + energy c6h12o6 + 6 o2. Types of carbohydrates: sugars, starch, fibre, sugars (simple carbohydrates) Monosaccharides: simplest form of cho (cid:135) contains 3 to 9 carbon atoms. Dietary monosaccharides: glucose- preferred energy source fructose - sweet avour and sensation (cid:135) glucose, fructose, galactose same chemical formula, con gured differently. Disaccharides: (cid:135) sucrose (glucose + fructose), lactose (glucose + galactose), maltose (glucose + glucose) milk sugar. Oligosaccharides: 3-9 cho monomers (complex carbohydrate) more work for the digestive system to break them down, long strings of monos. 7828!9/,:/;3. 0? can only absorb when in monosaccharide form. A! alpha linkages predominant makeup of our diet glycogen starch (amylopectin and amylose) Storage form of glucose (cid:135) (cid:135) branching every7-11 glucose. 1/4 of starch less glucose units don"t have access to the glucose chemical bonds! B! majority of carb digestion individual intestinal cell.