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Questions and Answers
Which branch of life science investigates the chemical processes occurring within living organisms?
Which branch of life science investigates the chemical processes occurring within living organisms?
What is the process by which cells break down glucose to release energy in the form of ATP?
What is the process by which cells break down glucose to release energy in the form of ATP?
Which of these is NOT a key concept in life science?
Which of these is NOT a key concept in life science?
What is the process by which organisms maintain a stable internal environment despite changes in the external environment?
What is the process by which organisms maintain a stable internal environment despite changes in the external environment?
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Which of these is NOT a branch of life science?
Which of these is NOT a branch of life science?
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What is the basic unit of life?
What is the basic unit of life?
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Which of the following correctly describes the relationship between organism and population?
Which of the following correctly describes the relationship between organism and population?
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Which level of biological organization includes combinations of atoms?
Which level of biological organization includes combinations of atoms?
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What is the primary difference between the domains Bacteria and Archaea?
What is the primary difference between the domains Bacteria and Archaea?
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What is the process by which plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water?
What is the process by which plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water?
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Which of the following is NOT a kingdom within the domain Eukarya?
Which of the following is NOT a kingdom within the domain Eukarya?
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Which of the following best describes the relationship between a community and an ecosystem?
Which of the following best describes the relationship between a community and an ecosystem?
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Which level of biological organization encompasses all the ecosystems on Earth?
Which level of biological organization encompasses all the ecosystems on Earth?
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Flashcards
Tissues
Tissues
Groups of similar cells that perform a specific function.
Organ Systems
Organ Systems
Groups of organs working together to perform complex functions in an organism.
Populations
Populations
Groups of individuals of the same species living in a specific area at the same time.
Biosphere
Biosphere
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Taxonomy
Taxonomy
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Life Science
Life Science
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Cell
Cell
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Metabolism
Metabolism
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Homeostasis
Homeostasis
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Photosynthesis
Photosynthesis
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Cellular Respiration
Cellular Respiration
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Mitosis
Mitosis
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DNA Replication
DNA Replication
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Study Notes
Introduction to Life Science
- Life science encompasses the study of living organisms, their structures, functions, interactions, and evolution.
- It includes various interconnected disciplines like biology, ecology, genetics, and more.
- Key aspects of life science include understanding the fundamental processes of life, from molecular interactions to ecosystems.
- Life science uses scientific methods to explore and describe living things.
Key Concepts in Life Science
- Cells: The basic unit of life. All living organisms are composed of one or more cells.
- Metabolism: The chemical processes that occur within a living organism in order to maintain life.
- Homeostasis: The ability of an organism to maintain a stable internal environment despite changes in the external environment.
- Growth and Development: The processes by which an organism increases in size and complexity.
- Reproduction: The process by which organisms make more of their own kind.
Branches of Life Science
- Molecular Biology: Focuses on the structure and function of molecules essential to life, including DNA, RNA, proteins.
- Genetics: Studies heredity and the variation of inherited characteristics.
- Cell Biology: Investigates the structure and function of cells, including their organelles and processes.
- Physiology: Focuses on the functions of organ systems in organisms.
- Ecology: Studies the interactions of organisms with each other and their environment.
- Evolutionary Biology: Examines the processes of evolution and the diversity of life.
- Biochemistry: Investigates the chemical processes occurring within living organisms.
Key Processes in Living Organisms
- Photosynthesis: The process by which plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
- Cellular Respiration: The process by which cells break down glucose to release energy in the form of ATP.
- DNA Replication: The process of copying DNA molecules to ensure accurate genetic information transfer during cell division.
- Protein Synthesis: The process of creating proteins from the information encoded in DNA and RNA.
- Mitosis: Cell division for growth and repair.
- Meiosis: Cell division that leads to the formation of gametes (sex cells).
Levels of Biological Organization
- Atoms: Fundamental building blocks of matter.
- Molecules: Combinations of atoms.
- Cells: Fundamental units of life.
- Tissues: Groups of similar cells.
- Organs: Structures composed of different tissues working together.
- Organ Systems: Groups of organs working together.
- Organisms: Individual living beings.
- Populations: Groups of individuals of the same species in a given area.
- Communities: Groups of different populations interacting.
- Ecosystems: Communities of organisms interacting with their physical environment.
- Biosphere: All the world's ecosystems.
Diversity of Life
- Taxonomy: The science of classifying and naming organisms.
- Classification: Grouping organisms based on shared traits, evolutionary relationships (phylogeny).
- Domains of Life (Three-domain system): Bacteria, Archaea, Eukarya.
- Kingdoms (under Eukarya): Protista, Fungi, Plantae, Animalia.
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Description
This quiz covers key concepts in life science, focusing on living organisms, their structures, and functions. Explore essential topics such as cells, metabolism, and reproduction, as well as their roles in maintaining life. Test your understanding of how various life processes interconnect within ecosystems.
