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Bio Concept 1 Notes

Intro to Ecology Notes for 1/29 Biology Test

QuestionAnswer
What is ecology? the study of relationships between two organisms and an organism and its environment
What is an organism? a living thing. an individual member of a species or population
What does unicellular mean? composed of one cell
What does multicellular mean? composed of more than one cells
What are the 7 characteristics of life? 1. one or more cells 2. DNA or RNA as genetic material 3. growth 4. reproduction 5. respond to outside stimuli 6. as a population, be able to adapt to the environment and evolve 7. have a metabolism
What are the 2 types of reproduction? sexual and asexual
Describe sexual reproduction. 2 parents produce genetically unique offspring together
Describe asexual reproduction. 1 parent produces genetically identical offspring
What is a stimulus? a change in an organism's environment (cause)
What is a response? how an organism reacts to a change in its environment (effect)
What does it mean to adapt and evolve? populations of living things change over time as individuals with better traits (adaptations) live longer and reproduce more.
What does it mean to have a metabolism? to both consume energy and produce waste
What is metabolism? all of the chemical reactions of each cell in an organism that provide energy for life's processes and create key molecules
What are the last 6 levels of ecological organization (in order)? 1. organism 2. population 3. community 4. ecosystem 5. biome 6. biosphere
What is a population? multiple organisms of the same species living together
What is a community? multiple populations of different species living together
What is an ecosystem? a community plus all of the abiotic factors in the environment
What is a biome? multiple ecosystems that share similar characteristics but are located in different parts of the planet
What is the biosphere? the zone of life on Earth, encompassing all of Earth's ecosystems
What is biodiversity? the variety of organisms considered at all levels, from populations to ecosystem
What is taxonomy? the field of biology that classifies organisms, organizing them based on similar characteristics
What are the 8 classifications all life is organized into? 1. domain 2. kingdom 3. phylum 4. class 5. order 6. family 7. genus 8. species
What is binomial nomenclature? 2-name naming system by Carolus Linnaeus that names organisms after their two most specific classification levels: genus species
What is a cladogram? a diagram that shows relatedness of organisms
What doesn't a cladogram show? it does not show ancestral relationships like a phylogenetic tree does
What is a dichotomous key? a tool used for identifying organisms based on their characteristics
Created by: miayablasingame
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