Study Guides (238,586)
United States (119,852)
Biology (282)
CAS BI 108 (44)

BI108 Lecture Notes-Exam 1 (Chapters 1-6).docx

2 Pages
Unlock Document

Boston University
CAS BI 108
Francis Monette

Lecture Notes: 1/27 Lipids and Proteins (Chapter 3 and 4) • Which glycosidic linkage joins monosaccharides in glycogen: alpha 14 • “D” Glucose is a stereo isomer of glucose • Sucrose is a disaccharide • What distinguishes “saturated” from “unsaturated” fatty acids? Number of electron pairs shared between carbons • Phospholipids: 2 fatty acids, glycerol (3 carbon alcohol), phosphate group, functional group • Biological usefulness of phospholipids: generation of hydrophobic environment/barrier between two aqueous environments (CELL MEMBRANES) • True lipids (polymer); fats = triglyceride *only polymer o Glycerol + 3 fatty acid molecules; ester linkage • Lipids: o Phospholipids: cell membrane o Triglycerides (fats and oils) energy storage o Carotenoids: pigments, some vitamins; OH- group at end o Steroids: cholesterol—hydrophobic, OH- group at end Lecture: 1/29 Lipids and Proteins Continued... • How to join amino acids together to generate peptides? Via condensationPeptide Bonds • R groups have nothing to do with condensation reactions • N terminus: NH a3d C Terminus: COO - • 4 peptide bond atoms; resonance—electron sharing • Major Concept: the sequence of amino acids in chain determines the structure and function of the protein o Amino acid is ordered genetically • PRO
More Less

Related notes for CAS BI 108

Log In


Don't have an account?

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.