There are 7 characteristics: • Move • Respire • Sensitive to Changes • Grow • Reproduce • Excrete Waste • Nutritional Needs ClickBiology Movement/Move • An action by an organism or part of an organism causing a change of position or place. ClickBiology Respiration/Respire • The chemical reactions that break down nutrient molecules in living cells to release energy ClickBiology Sensitivity/Sensitive to Changes • The ability to detect or sense changes in the environment (stimuli) and to make responses. ClickBiology Growth/Grow • A permanent increase in size and dry mass by an increase in cell number or cell size or both. ClickBiology Reproduction/Reproduce • The processes that make more of the same kind of organism ClickBiology Excretion • The removal from organisms of toxic materials, the waste products of metabolism (chemical reactions in cells including respiration) and substances in excess of requirements. ClickBiology Nutrition/Nutritional Needs • The taking in of nutrients which are organic substances and mineral ions, containing raw materials or energy for growth and tissue repair, absorbing and assimilating them. ClickBiology Today in Life Science November 4, 2013 Warm-up Part 1: Use Chart with Video Warm-up Part 2: Use Warm-up Sheet Weeks Ahead Overview Characteristics of Living Things Quiz Necessities of Life Note-taking Guide IAN Page 55 Necessities of Life Cornell Notes and HW IAN Pages 56 and 57 A Look Ahead at the Study of Cells Cell Structure and Function At-a-Glance November 4th - 8th Monday - Characteristics of Living Thing Wrap-up/Necessities of Life Introduction Tuesday - Necessities of Life Wrap-up/Cells Intro Wednesday - Diversity of Life Reading and Notes Thursday - Cell Organelles Differentiated Activity Friday - Chapter 3 Reading and Wrap-up Text Assignment November 11th - 15th Monday - Cell Analogy Project Day 1 Tuesday - Cell Analogy Project Day 2 Wednesday - Cell Analogy Project Day 3 Thursday - Cell Stations Friday - Cell Stations November 18th - November 22nd Monday - Cell Structure and Function Exam Review (Characteristics of Living Things, Necessities of Living Things, and Cell Parts and Functions) Tuesday- Cell Structure and Function Exam 1 (Cell Structures and Functions) Wednesday - Amnesty Day/Make-up Day Thursday Edible Cell Model Project Friday - Amnesty Day - IAN CHECK It is pretty clear to most people, even very small children, know that icicles are not alive. They are cold to the touch; they don't move, except to drip or to fall to the ground when they break; they don't reproduce. At the opposite end of the spectrum, it is also clear that household pets and human friends are alive, especially when you see them run, jump, or respond to you. Those are fairly easy examples. But what about a clock or a seed? Are these things living or nonliving, and how can you tell? You know that a clock is nonliving, right? But its hands move, it makes noise, and it responds when you turn its dials or press its buttons. That's more lifelike than an icicle, isn't it? And what about a seed? Even though we're told that it holds the potential for life, it looks about as lively as a stone. As you can see, the distinction between living and nonliving is not always clear-cut. Some inanimate objects have characteristics of living organisms, while many living organisms, on the face of it, seem utterly lifeless. So how does one distinguish between living and nonliving things? First of all, the scientific definition of living includes those things that are alive or have ever been alive -- including what's left of a tree that died years before. Likewise, the seed, which appears lifeless and can remain dormant for years before finally germinating under the right environmental conditions, qualifies as living. In contrast, nonliving things are not alive, nor have they ever been. But what does it mean to be alive? According to biologists living organisms are characterized by seven "signs of life": 1) living things have highly organized, complex structures (CELLS); 2) living things maintain a chemical composition that is quite different from their surroundings; 3) living things have the capacity to take in, transform, and use energy from the environment; 4) living things can respond to stimuli; 5) living things have the capacity to reproduce themselves; 6) living things grow and develop; and 7) living things are well-suited to their environment. Summary • • • • • • • Move Respire Sensitive Growth Reproduction Excretion Nutrition ClickBiology Quiz Part 2 Guess which characteristic is being demonstrated by the following animations: ClickBiology Question 8 A. GROWTH B. MOVEMENT C. EXCRETION D. SENSITIVITY ClickBiology Question 9 A. NUTRITION B. MOVEMENT C. EXCRETION D. SENSITIVITY ClickBiology Question 10 A. NUTRITION B. MOVEMENT C. EXCRETION D. SENSITIVIYT ClickBiology Question 11 A. NUTRITION B. REPRODUCTION C. EXCRETION D. SENSITIVITY ClickBiology Question 12 A. SENSITIVITY and MOVEMENT B. MOVEMENT and GROWTH C. REPRODUCTION and MOVEMENT D. MOVEMENT and RESPIRATION Which two characteristics are shown by this animation: ClickBiology Question 13 A. NUTRITION and EXCRETION B. NUTRITION and GROWTH C. NUTRITION and REPRODUCTION D. NUTRITION and SENSITIVITY Other than movement, which characteristics are shown by this animation: ClickBiology Question 14 A. NUTRITION and EXCRETION B. REPRODUCTION and GROWTH C. GROWTH and EXCRETION D. RESPIRATION and GROWTH So far you should have named a total of five different characteristics. However there are 7 characteristics in total. Name the two remaining characteristics. ClickBiology Answers: How well did you do? ClickBiology Question 8: Excretion ClickBiology Question 9: Nutrition ClickBiology Question 10: Movement ClickBiology Question 11: Reproduction ClickBiology Question 12: Sensitivity and Movement Which two characteristics are shown by this animation: ClickBiology Question 13: Sensitivity and Nutrition Other than movement, which characteristics are shown by this animation: ClickBiology Question 14: Growth and Respiration So far you should have named a total of five different characteristics. However there are 7 characteristics in total. Name the two remaining characteristics. ClickBiology Cambridge IGCSE Biology www.ClickBiology.com ClickBiology