Textbook Notes (368,434)
United States (206,040)
Boston College (1,174)
Biology (106)
BIOL 1300 (21)


2 Pages
Unlock Document

BIOL 1300
Carol Chaia Halpern

Polysaccharides Thursday, September 13, 2012 8:44 AM • The 3 polysaccharides we will consider are all composed of many glucose molecules covalently bonded Starch • Long chain with occasional branching • Plant product • Grains are rich in starch • A source of energy for animals • Hydrolyzed to maltose (disaccharide of 2 glucose molecules covalently bonded) and then to glucose • Amylopectin- another type of polysaccharide similar to starch Glycogen • Liver and muscle cells make glycogen when they take glucose cells and bond them together- glucose synthesis after a meal • An animal polysaccharide • Highly branched • Storage form for glucose in the liver and the muscle cells • Muscle glycogen breakdown creates energy for cells • Liver glucose is used to release glucose into blood as needed Cellulose • Consists of long chains of glucose molecules with covalent bonds that cannot be hydrolyzed by animal cells • Therefore it cannot be a source of energy for most animals • Provides structural rigidity for plants so they can grow against gravity • Is an important component of fibers in foods that we consume • Vegetables and fruits are rich in fiber Fiber • Exercises the digestive system • Provides bulk, exercises the intestines, helps prevent diverticulosis, helps prevent hemorrhoids, is filling and can reduce food intake • Binds certain molecules and helps eliminate them • Such as cholesterol and carcinogens • Carcinogens can cause cancer if they hang near our cells, fiber traps and eliminates Lipids • Include fats, oils, waxes, etc • Main characterist
More Less

Related notes for BIOL 1300

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.