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Bio 100 UMaine Exam 1 with correct answers 100% 2025

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Bio 100 UMaine Exam 1 with correct answers 100% 2025 How would you define biology? - Correct Answer The study of living things How do biologists study a problem, what do they use? - Correct Answer The scientific method What is the definition for each of these levels? Ex. Biosphere, ecosystem, cells, organelles - Correct Answer Ecology What are some key features of the principle of evolution? - Correct Answer Overarching theme in biology, makes sense of everything we know about living organisms What specific feature are characteristics of all cells? - Correct Answer Enclosed membrane, use DNA as their genetic information What is the difference between a eukaryotic cell and a prokaryotic cell? - Correct Answer Eukaryotic Cell: Has a membrane bound nucleus, usually are part of multiple cell organisms, larger and more complex, typically have more organelles Prokaryotic Cell: Lack a membrane bound nucleus, typically part of unicellular organisms, smaller and less complex. What types of organisms are included within the prokaryotes? - Correct Answer Prokaryotic: Bacteria Eukaryotic: Plants and animals Are your cells prokaryotic or eukaryotic? - Correct Answer Eukaryotic What is a chromosome? - Correct Answer One long DNA molecule with hundreds or thousands of genes Where are genes found? - Correct Answer In the chromosomes What are genes made of? - Correct Answer DNA How many chromosomes does a human have? - Correct Answer 46, 23 pairs What is a major difference between chromosomes in eukaryotes and a chromosome in a bacterial cell? - Correct Answer Bacteria cell: Found in cytoplasm Eukaryotes: Found in nucleus How would you define homeostasis? - Correct Answer How organisms maintain internal systems What is an example of homeostasis? - Correct Answer Humans internal body temperature How would you define the branch of biology called taxonomy? - Correct Answer The branch of biology that names and classifies organisms into groups of increasing breadth Have all the species alive today been classified? - Correct Answer No, approximately 1.8 million species have been identified and thousands more are identifies each year, but there are 10 to 100 million species that exist What are the levels of classification, going from species all the way up to domain? - Correct Answer Domain, kingdom, phylum, class, order, family, genus, species What are the 3 domains? - Correct Answer Eukarya, Bacteria, and Archaea What defines each level of ecology and what types of questions are asked at each level of ecology? - Correct Answer Organismal ecology: Studying how a specific organism interacts with its surroundings Population Ecology: How a population interacts with its environment Community Ecology: How a co

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How would you define biology? - Correct Answer The study of living things



How do biologists study a problem, what do they use? - Correct Answer The scientific method



What is the definition for each of these levels? Ex. Biosphere, ecosystem, cells, organelles - Correct
Answer Ecology



What are some key features of the principle of evolution? - Correct Answer Overarching theme in
biology, makes sense of everything we know about living organisms



What specific feature are characteristics of all cells? - Correct Answer Enclosed membrane, use DNA as
their genetic information



What is the difference between a eukaryotic cell and a prokaryotic cell? - Correct Answer Eukaryotic
Cell: Has a membrane bound nucleus, usually are part of multiple cell organisms, larger and more
complex, typically have more organelles

Prokaryotic Cell: Lack a membrane bound nucleus, typically part of unicellular organisms, smaller and
less complex.



What types of organisms are included within the prokaryotes? - Correct Answer Prokaryotic: Bacteria

Eukaryotic: Plants and animals



Are your cells prokaryotic or eukaryotic? - Correct Answer Eukaryotic



What is a chromosome? - Correct Answer One long DNA molecule with hundreds or thousands of genes



Where are genes found? - Correct Answer In the chromosomes

, What are genes made of? - Correct Answer DNA



How many chromosomes does a human have? - Correct Answer 46, 23 pairs



What is a major difference between chromosomes in eukaryotes and a chromosome in a bacterial cell? -
Correct Answer Bacteria cell: Found in cytoplasm

Eukaryotes: Found in nucleus



How would you define homeostasis? - Correct Answer How organisms maintain internal systems



What is an example of homeostasis? - Correct Answer Humans internal body temperature



How would you define the branch of biology called taxonomy? - Correct Answer The branch of biology
that names and classifies organisms into groups of increasing breadth



Have all the species alive today been classified? - Correct Answer No, approximately 1.8 million species
have been identified and thousands more are identifies each year, but there are 10 to 100 million
species that exist



What are the levels of classification, going from species all the way up to domain? - Correct Answer
Domain, kingdom, phylum, class, order, family, genus, species



What are the 3 domains? - Correct Answer Eukarya, Bacteria, and Archaea



What defines each level of ecology and what types of questions are asked at each level of ecology? -
Correct Answer Organismal ecology: Studying how a specific organism interacts with its surroundings

Population Ecology: How a population interacts with its environment

Community Ecology: How a community interacts with itself and its environment

Ecosystem Ecology: Studying the way biotic and abiotic factors in an ecosystem interact

Landscape Ecology: Improving relationships between ecological processes in the environment and
particular ecosystems

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