Communication‚ Homeostasis & Energy Communication & Homeostasis Outline the need for communication systems within multicellular organisms‚ with reference to the need to respond to changes in the internal and external environment and to co-ordinate the activities of different organs. Organisms need to respond to external stimuli‚ e.g. temperature‚ oxygen concentration and levels of sunlight. These may be over time‚ e.g. winter fur to summer fur‚ or quickly‚ e.g. changing size of pupils. Internal
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When comparing and contrasting the mitochondria and chloroplast‚ a person learns all of the similarities and differences between the two. In this essay‚ you will read about the mitochondria‚ the chloroplast‚ and their biochemical reactions. The mitochondria often referred to as the powerhouse cell is found in the eukaruotic cells. There‚ those cells are often found in groups of hundreds. Mitochondria cells can be anywhere from 1 to 10 um long in length‚ but are able to change shapes‚ move‚ and divide
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Photosynthesis Lab Answer Key Vocabulary: carbon dioxide‚ chlorophyll‚ glucose‚ limiting factor‚ nanometer‚ photosynthesis‚ wavelength Prior Knowledge Questions (Do these BEFORE using the Gizmo.) [Note: The purpose of these questions is to activate prior knowledge and get students thinking. Students are not expected to know the answers to the Prior Knowledge Questions.] • To survive‚ what gas do we need to breathe in? Oxygen • Where is this gas produced? In plants Gizmo
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Plant Transport Plants are mostly made up of water. Lettuce is about 94% water and a potato is about 77% water. Plants need water for three main purposes: ------photosynthesis‚ -support -transport of chemicals Water is a raw material for photosynthesis. If water is in short supply‚ the rate of photosynthesis will be limited. Plants need water for support‚ otherwise they wilt. Water is needed to transport many chemicals within plants. Chemicals‚ such as mineral salts‚ dissolve in water and
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in: | | |Autotrophs (producers) must be exposed to what |Sunglight!! – no sunlight means no photosynthesis | |abiotic factor in order to survive? | | |Different species
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Growth Introduction Photosynthesis is the process of converting light energy to chemical energy and storing it in the bonds of sugar. Plants need water‚ Co2 and light energy to create sugar. Photosynthesis occurs mainly in leaves and in 2 phases: light reaction and dark reaction. The light reactions converts light energy to chemical (Biology.clc.uc.edu‚ 2014). This chemical reaction must take place in the thylakoid membrane. Chlorophyll (the green pigment involved in photosynthesis) and several other
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they can source water whereas fungi can live almost anywhere so long as it has other small organisms nearby. Plants make their own food‚ using water and carbon dioxide to make glucose (energy) and oxygen (a waste product) in a process called photosynthesis. Though very little of it‚ it also lets out some carbon dioxide. This is the reason that it has adapted to live in places with lots of sunlight- so it can absorbed enough of it to make energy. It also grows in ground that has a water source. Different
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Gabriela Rios-Martinez March 1‚ 2014 BIO 141 Exam 1 Study Questions Chapter 1: Biology and the Tree of Life (#1 – 4) 1. What is the difference between a hypothesis and a scientific Theory? Between a hypothesis and a prediction? What kinds of hypotheses are useful for scientific investigations that try to explain the natural world‚ and which are not? Give one or more examples of hypotheses that are and are not scientifically useful. (a.) A scientific theory has two components; a pattern
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of CO2. These values of the photosynthesis (plus respiration) rates in red light were 0.443‚ -0.141‚ and -1.1 ppm/g/min with a mean value of -0.27 ppm/g/min. The values of photosynthesis (plus respiration) rates in blue light were 2.449‚ 1.667‚ and 2.997 ppm/g/min with a mean value of 2.36 ppm/g/min. A t-test comparing the mean photosynthetic rates under red and blue light indicated no significant difference
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Below are a list of concepts and ideas you need to know for the first Bio 100/107 Test Chapter 1: What is the organizational hierarchy? What is each level? What are emergent properties? At what level does life emerge? Organisms interact with the environment: energy and atoms Unity explains that cells have several common features. What are those features? What is diversity? How does Evolution mediated by Natural Selection explain Unity and Diversity? Chapter 2: Life is composed of atoms
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