BIOL 3070 Lecture Notes - Lecture 18: Pinocytosis, Osculum, Pseudopodia
Document Summary
Food fuel for the body supplying it with macromolecules for energy production and building blocks to synthesis new cells and tissues: water, proteins, fats and carbohydrates are derived from food and absorbed through the gut. If food is scarce and little is eaten inhibiting function of critical body tissues such as brain and heart death: over nourishment: Eating more than the body needs excess nutrients are stored as fat over weight and leads to death. A single gene in the drosophila would determine whether food will come to it (sitter type) or it would go after it (rover type) Feeding methods: surface absorption in parasites where it sits and waits for the nutrients come to it, endocytosis, filter feeding, deposit feeder that feeds on waste products, herbivory, carnivory, omnivory. Surface absorption: passive: small unicellular organisms: parasites and protozoans. Passive movement of nutrients from the extracellular fluid and the gut.
