PPT-Why are cells small? Cells are typically small because of the ratio of surface area to

SAV 6S 2 S 3 where Slength of one side We use cubes for simplicity of the math In real life cells are more like spheres but the concept remains the same Surface area dictates amount of exchange across the . Material Needs.... What sort of things do living things need to obtain from the environment?. What sort of things do they need to remove from their cells?. Organisms are differently adapted so gas exchange can take place whether it be in water or on land. Digital Laboratory. It’s best to view this in . Slide Show . mode, especially for the quizzes.. This module will take approximately 60 minutes to complete.. After completing this exercise, you should be able to:. Take a DIGESTIVE SYSTEM reading packet . Read and complete this period. Underline and highlight as you go along & answer questions. A . large part of your regents (Section C) is reading comprehension . CONVERTING UNITS. mm. µm. nm. x 1,000. x 1,000. ÷ 1,000. ÷ 1,000. Compare the relative sizes of molecules, cell membrane thickness, viruses, bacteria, organelles and cells, using the appropriate SI unit.. http://www.youtube.com/watch?v=ZK6YP1Smbxk. . 2.1 Cell Theory. Assessment Statements. Outline the Cell Theory. Discuss the evidence for the cell theory. State the unicellular organisms carry out all the functions of life.. AVP - Legislative Affairs. Georgia House Rural Development Council. k. evin.curtin@att.com. 404-927-3193. 5/23/17. 2. . More than 19,000. AT&T Employees working in Georgia . as of March 2017. 3. What is the difference between simple diffusion and facilitated diffusion?. What is a hypertonic, hypotonic and isotonic solution?. Why do we use . endocytosis. /. exocytosis. ?. What special structures do we use in . 1. a. Review Identify two reasons why a cell’s growth is limited.. DNA can’t keep up with growth. Plasma membrane doesn’t grow at same rate of volume and cannot provide enough food for cell or get enough waste out of cell.. Objective: To understand SA:V ratio and why a cell needs to divide. Why a cell divides Cell Growth: Grow by dividing instead growing larger The larger a cell is the more demand is put on DNA and nutrients can’t move through big cells easily It’s best to view this in . Slide Show . mode, especially for the quizzes.. This module will take approximately 60 minutes to complete.. After completing this exercise, you should be able to:.  . Distinguish, at the light microscope level, each of the following:. For student copy. The Mouth . aka . oral. or . buccal. cavity. cheeks form lateral walls. internally covered by mucous membrane: . nonkeratinized. , stratified sq . epith. wall of cheeks: . buccinator. Most common. . benign tumours. , . are. leiomyomas,. adenomas. vascular tumours (haemangioma, lymphangioma). . malignant tumours,. . carcinoid tumours. lymphomas . adenocarcinoma. . .. Carcinoid . Tuesday . 6 . December 2011. Professor . Julian Walters. Hammersmith . campus. Intestinal cells. To review the structure of the small and large intestine. To review the types of cells found in the intestinal mucosa. -anatomically in to three regions, duodenum, jejunum and ileum.. -it digests food material and absorbs end products of the digestive process... -to perform its digestive functions, the first region of the small intestine, the duodenum, receives enzymes and alkaline buffer from the pancreas and bile from the liver, additionally, epithelial cells and glands of the mucosa contribute buffer and enzymes to facilitate digestion..