Lecture_19

Lecture_19 - CHM 115 Lecture 19 10-29-07 Chemistry and...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
CHM 115 Lecture 19 10-29-07
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Chemistry and Biochemistry Where we’ve been: ionic and covalent bonding molecular shape intermolecular forces organic functional groups Where we’re going: Types of biochemical molecues How bonding and IMF’s determine shape How shape determines biological function Lipids/amino acids / proteins / nucleic acids
Background image of page 2
Lipids: fats Flipped structure Fats are esters of carboxylic acids & glycerine CH 2 (OH)CH(OH)CH 2 (OH)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Metabolic studies have shown that trans fats have adverse effects on blood lipid levels--increasing LDL ("bad") cholesterol while decreasing HDL ("good") cholesterol. This combined effect on the ratio of LDL to HDL cholesterol is double that of unsaturated fatty acids. Stearic acid (saturated)
Background image of page 4
Zero calorie fat: Olestra Glycerine Stearic acid Sucrose Fat Olestra
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Carbohydrates The most abundant class of organic compounds in living organisms. Products of photosynthesis, an endothermic condensation of carbon dioxide and water requiring light energy and catalyzed by the pigment chlorophyll. n CO 2 + n H 2 O + energy C n H 2n O n + n O 2 Carbohydrates are found as sugars starches structural material (cellulose) a component of ATP, recognition sites on cell surfaces, one of three essential components of DNA and RNA
Background image of page 6
Sugars Preferred structural form may be that of a cyclic molecule -- five and six- membered rings are favored and may be joined into chains. Sugars: 5 & 6 atom cyclic units are most common
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 37

Lecture_19 - CHM 115 Lecture 19 10-29-07 Chemistry and...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online