Let’s think about nutrition in different organisms! Brainstorm all the terms you can think of that relate to Nutrition in 2 minutes. Write them down!

What is nutrition? Nutrition is the process of obtaining food and changing it into a useable form.

Vitamins are coenzymes that assist in some reactions. 2 types: Vitamins are coenzymes that assist in some reactions 2 types: water soluble: B & C fat soluble: A, D, E, K Minerals are chemical elements that organisms need for normal functioning ex.Iodine, Cobalt, Zinc, Manganese

Who can differentiate autotrophs and heterotrophs? Autotrophs-make their own food ◆phototrophs- use light to make Energy. ◆chemotrophs- use chemical reactions Rx to make Energy Heterotrophs – eat ready-made food. Herbivores, carnivores, & omnivores

Calorimeter- measures the amount of heat produced during burning of food.

calorie- unit used to measures the energy content of food or the amount of heat required to raise the temperature of 1 kg of water one degree Celsius. How many calories is a kilocalorie? 1 kilocalories = 1,000 calories 1 kilo calorie = 1 Calorie 1 calorie = 4.2 joules

If you burn more calories than you take in would you be normal, obese, or thin? If you burn a great deal less calories than you take in would you be normal, obese, or thin?

How much should you eat from each food group?

What is fiber? Fiber is bulky, indigestible materials found in cell walls of fruits, vegetables, & grains. It stimulates muscles in the digestive tract to keep food moving. It reduces risks of colon & rectal cancers.

What is the difference between intracellular digestion and extracellular digestion? Intracellular is digestion within the cell while extracellular digestion is outside the cell.

Describe how this Ameba takes in food. Ameba uses pseudopods to engulf food by phagocytosis.

Describe how this paramecium takes in food.

Food particle are swept into oral groove by cilia Food particle are swept into oral groove by cilia. Food vacuole is formed by pinching membrane off, which later joins with a lysosome. Undigested food exits via anal pore.

Hydra is 2 cell layers thick. Cnidoblasts are stinging cells surround the mouth .

Describe how this Hydra takes in food.

Hydra uses its tentacles to capture & stuff a paralyzed water flea (daphnia) into its gastrovascular cavity where digestion will occur. Wastes diffuse through ectoderm.

Describe how this Earthworm takes in food through its alimentary canal or digestive tube. Fold in the wall

Food enters mouth, pharynx pulls food in & it passes through the esophagus. Crop stores and releases food gradually into gizzard where grinding takes place. Paste like food enters intestines where chemical digestion & absorption take place. Last wastes exit the anus

Describe how this grasshopper takes food into its tubular digestive system. Where does mechanical digestion occur? Where does chemical digestion occur? esophagus crop