Biob 110cs 1st Edition Lecture 7 Current lecture Plant Complexity Plants have 40 50 000 genes while humans only have 25 30 000 Macronutrients Plants need Carbon Hydrogen Oxygen Phosphorous Potassium Nitrogen Sulfur Calcium Iron Magnesium They also need the micronutrients Zinc copper Boron Molybdenum and Manganese Water Unique properties that make it necessary 1 Highly polar 2 Universal Solvent 3 Highly cohesive 4 Ice Floats on water solid is less dense than liquid 4 Major groups of organic molecules 1 Carbohydrates important for energy food transport and structural integrity a Glucose and Fructose are both monosaccharides simple sugars b Sucrose is a disaccharide made with both structures used in a monosaccharide and is transported throughout the plant c Starch polysaccharide complex is stored in roots tubules and seeds These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute d Cellulose is a major component of the cell wall and only bacteria and fungi can digest it 2 Lipids cell membranes energy storage and protection a Fatty acids Saturated has no double bonds found in coconut chocolate and palm Monounsaturated has 1 double bond and is found in olive peanut canola and avocado oil Polyunsaturated has more than 2 double bonds and is found n sunflower safflower corn and soybean Waxes are long chains of saturated fatty acids on leave s surfaces to conserve water and prevent too much evaporation b Phospholipids A chain that contains phosphate and can be hydrophobic hates water or hydrophilic likes water c Steroids not the kind people use Used in plants for self defense
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