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Learning Objective 1.doc

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BIOL 1500
Tanya Da Sylva

Learning Objective 1 What is Science and Biology oApply the scientific method to everyday situations Design critical experiments to test hypotheses and discuss the importance of welldesigned and controlled experiments oDistinguish between quantitative and qualitative data Quantitative data is a measurable observation usually to do with numbersQualitative data is data that can be observed that can be described but not measured oDistinguish between a scientific theory and a hypothesis Hypothesis is a proposed explanation for a set of observations A good hypothesis leads to predictions that scientists can test by recording additional observations or by experiments Theory is much broader in scope that a hypothesis A theory is general enough to generate many hypothesis A theory is supported by evidence Theories describe a great diversity of observations that are supported by a vast body of evidence oDescribe seven properties common to all life 1 Order a highly ordered structure that typified life Living cells are the basis of this complex organization 2 Reproduction Organisms reproduce their own kind 3 Growth and development Inherited information in the form of DNA controls the pattern of growth and development of all organisms4 Energy processing When a predator eats its prey the predator will use the chemical energy in its prey to power its own activities and chemical reactions 5 Response to the environment All organisms respond to environmental stimuli6 Regulation many types of mechanisms regulate an organisms internal environment keeping it within limits that sustain life 7 Evolutionary adaptations Adaptations evolve over many generations as individual traits with traits best suited for their environment have greater reproductive success and pass on their traits to their offspring oDescribe the levels of biological organization from molecules to the biosphere noting the interrelationships between levels 1 Biosphere All of the environments on earth that support life Includes Regions of land bodies of water and the lower atmosphere2 Ecosystem All the organisms living in a particular area as well as the physical component with which the organisms interact with such as air soil water and sunlight3 CommunityThe entire array of organisms So all the species inhabiting in a certain area 4 Population All the individuals of a particular species living in an area 5 Organism an individual living thing6 Organ system Several organs that cooperate in a specific function Such as circulatory system or nervous system 7 Organ An organ is made up of several different tissues Example our brain 8 Tissue is made up of a group of similar cells that perform a specific function Ex Nervous system 9 Cell a fundamental unit of life Ex nerve cell 10 Organelle a membraneenclosed structure that performs a specific function in a cell Ex Nucleus11 Molecule is a cluster of small chemical units called atoms held together by chemical bonds Ex DNA oDiscuss how hierarchical organization and evolution tie together all major themes in biology At each new property there are novel properties that arise properties that were not present at the preceding levelEmergent properties is an important theme in biology because everything is always developing and coming together oExplain why cells are a special level in biological organization Cell are the fundamental unit of life
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