Biol 216 12 UPDATED Digestion 1-48.pdf

Biol 216 12 UPDATED Digestion 1-48.pdf - Power Point 9 1...

Info icon This preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
5/30/17 1 Power Point 9 5/30/17 1 Learning Goals 1. Understand the nutritional requirements of animals and various feeding methods 2. Describe the 4 layers of the vertebrate gut. 3. Explain the details of the digestive process, including anatomical components, specific molecules (enzymes, bile salts, etc) and neuronal and hormonal control. 5/30/17 2 Nutrition All animals require matter and energy for: Metabolism : the biochemical reactions that allow a cell or organism to extract energy from its surroundings and use that energy for… Homeostasis -maintaining a stable internal environment Growth Reproduction 5/30/17 3
Image of page 1

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

View Full Document Right Arrow Icon
5/30/17 2 Organic Molecules Organic: molecule based on carbon 1. Provide energy Used as fuels for oxidative reactions Carbohydrates and fats: primary organic molecules used as fuels 2. Building blocks for making complex biological molecules, such as: carbohydrates, lipids, proteins, nucleic acids 5/30/17 4 Important classes of organic macromolecules: Carbohydrates Lipids Proteins Nucleic acids 5/30/17 5 Carbohydrate A biological molecule consisting of: Simple single monomer sugars (monosaccharides) Two-monomer sugars (disaccharides) and other multi-unit sugars (polysaccharides). 5/30/17 6
Image of page 2
5/30/17 3 Monosaccharide Smallest kind of sugar molecule A simple sugar A single unit sugar Building blocks of more complex sugar 5/30/17 7 Sugar Characterized by several hydroxyl groups (-OH) and a carbonyl group (>C=O) Isomer: same formula, different structure Glucose C 6 H12O 6 C 6 H12O 6 Fructose 5/30/17 8 In aqueous solutions, some monosaccharides form rings Linear structure Abbreviated ring structure Monosaccharides are the main fuel that cells use for cellular work 5/30/17 9
Image of page 3

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

View Full Document Right Arrow Icon
5/30/17 4 Disaccharide Consists of two monosaccharides linked via a dehydration reaction Examples: Sucrose=glucose+fructose Sucrose: table sugar Glucose: sports drinks Fructose: fruit Lactose= glucose+galactose Maltose= glucose+glucose 5/30/17 10 Polysaccharides Polymers of monosaccharides Long chains of sugar units Examples: Starch: long chain of glucoses Found in plants ( potatoes, wheat, rice) Glycogen: long chain of glucoses but with branches Found in animals Cellulose: long chain of glucoses but with different linkage Found in cell walls of plants; structural component 5/30/17 11 Polysaccharides 5/30/17 12
Image of page 4
5/30/17 5 Cellulose Cellulose is the most abundant organic compound on Earth Forms cable-like fibrils in the tough walls that enclose plants Major component of wood Also known as dietary fiber 5/30/17 13 Lipids Organic compound Consists mainly of carbon and hydrogen atoms linked by non polar, covalent bonds and therefore is mostly hydrophobic and insoluble in water Includes: fats, phospholipids, steroids 5/30/17 14 Fats A fat is a type of lipid molecule Dietary fat is composed of mostly triglycerides Triglycerides are made from glycerol (an alcohol) + three fatty acids Fat function: Energy storage Cushioning Insulation 5/30/17 15
Image of page 5

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

View Full Document Right Arrow Icon
5/30/17 6 Triglyceride= + 3
Image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern