2:30-3:30 TTHS Levels of Organization in Organism In unicellular (single-celled) organisms‚ the single cell performs all life functions. It functions independently. However‚ multicellular (many celled) organisms have various levels of organization within them. Individual cells may perform specific functions and also work together for the good of the entire organism. The cells become dependent on one another. Multicellular organisms have the following 5 levels of organization ranging
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8.4 - Life on Earth: Prerequisite Knowledge: • Discuss evidence that present-day organisms have developed from different organisms in the distant past: Comparison of the physiology of fossils to present day organisms have showed relationships between the organisms The examination of the DNA structure of organisms has shown the development from past organisms. • Describe the conditions under which fossils form: Fossils are any remains of past life found in rocks of different
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and Functions Indicate whether the following statements are True (T) or False (F). (a) Unicellular organisms have one-celled body. (T / F) (b) Muscle cells are branched. (T / F) (c) The basic living unit of an organism is an organ. (T / F) (d) Amoeba has irregular shape. (T / F) Answer: (a) Unicellular organisms have one-celled body. (T) (b) Muscle cells are branched. (F) (c) The basic living unit of an organism is an organ. (F) (d) Amoeba has irregular shape. (T) Question 2: Make a sketch of the
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together -Unicellular-one cell -Multicellular-one or more cells -Living things produce offspring *Reproduction is essential for the continuation of the species. -Sexual- two cells from different parents unite -Asexual- a cell splits to form two organisms -Living things grow and develop *Organisms start as a single cell. *Growth results in the increase in the amount of living materials Development - All of the changes that take place during the life of and organism. Like when
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Title- Protista Lab Concept- the concept of this lab was to explore what is in the pond water as living organisms and try to identify what it is. Some types of Protista are multi-cellular like giant kelp. Although they look much like plants‚ multi-cellular protists lack specialized tissues. Being eukaryotes‚ they have a membrane-bound true nucleus with linear chromosomes‚ and they have membrane-bound organelles. The kingdom Protista contains all eukaryotes that are not plants‚ animals‚ or fungi
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Human Biology‚ 7e (Johnson) Chapter 1 Human Biology‚ Science‚ and Society 1.1 Multiple Choice Questions 1) The branch of science that studies living organisms and their life processes is A) biology B) geology C) chemistry D) physics Answer: A Topic: Sec. 1.0 Skill: Knowledge/Comprehension 2) The process by which living organisms maintain a fairly constant internal environment despite changes in the external environment is known as A) metabolism B) biology C) homeostasis D) evolution
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association of 2 or more atoms) Cell - smallest unit of life Tissue - organized array of cells and substances that interact in a collective task Organ - structural unit of interacting tissues Organ System - a set of interacting organs Multicelled Organism - individual that consists of one or more cells Population - group of single celled or multicelled individuals of a species in a given area Community - All populations of all species in a specified area Ecosystem - A community interacting with
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queen is much larger F Organisms Are Composed of Cells 1.3 Cells are the fundamental unit of living things 9 THE GENE THEORY: Genes Control the Traits of Organisms 1.4 Organisms have a genetic inheritance 10 THE THEORY OF HOMEOSTASIS: Organisms Are Homeostatic 1.5 Organisms regulate their internal environment 11 THE THEORY OF ECOSYSTEMS: Organisms Live in Ecosystems 1.6 The biosphere is divided into ecosystems 12 THE THEORY OF EVOLUTION: Organisms Are Related and Adapted to Their
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Bio Notes 9/5/2012 * Biology- Study of living things * Characteristics of living organisms * Consist of one or more cells * Unicellular- one cell able to carry out life ex. Bacteria * Multicellular- Many cells‚ specialized cells * Observations with microscopes lead to Cell Theory‚ Robert Hook * All cells come from preexisting cells * All cells are similar in chemical composition * Chemical reactions occur within
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what life is. CHARACTERISTICS OF LIVING AND NON-LIVING THINGS 1. COMPLEX DEFINITION- Living things is composed of one or more cells. 2 KINDS OF CELL 1. UNICELLULAR- It is one celled organisms. 2. MULTI-CELLULAR- organisms composed of many cell. 2.METABOLISM- the sum of all different chemical activities carried out by living things. 2 SETS OF METABOLIC REACTIONS 1. CATABOLISM- all reactions that break own substances. 2
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