BISC306 Study Guide - Midterm Guide: Signal Transduction, Small Intestine, Endocrine System

• School: University of Delaware
• Department: Biological Sciences
• Course: BISC306
• Professor: michael moore

Document Summary

No, smaller organisms and humans require the same substances to survive. Surface area decreases, volume increases and the surface/volume ratio will increase: as organisms get larger, they have to change their shape to maintain their ability to exchange with the environment. Most ideal shape: long skinny hollow tube: which of the following organ systems accounts for most of our direct contact with the environment: skin, lungs, kidneys, small intestine or circulatory system. Small intestine (digestive tract: name the three types of exchange that complex organisms use and contrast their costs and. Use large muscular pumps to push mass quantiles of substances through pipes. A critical aspect of homeostasis in living things is to create an internal environment in which all of the body"s cells are in an isotonic (equal tension/same concentration) solution. The body trying to maintain a somewhat constant stable external and internal environment. By buffering and counteracting external changes: contrast negative feedback, positive feedback and feedforward.