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Which of the following levels have members that are the most similar?
Which of the following levels have members that are the most similar?
To which of the following domains of life do monkeys belong?
To which of the following domains of life do monkeys belong?
Zebras, acacia trees and humans living in South Africa constitute which of the following?
Zebras, acacia trees and humans living in South Africa constitute which of the following?
Which of the following is the correct way to write the scientific name of a human being?
Which of the following is the correct way to write the scientific name of a human being?
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Which correctly indicates the sequence of increasing organization?
Which correctly indicates the sequence of increasing organization?
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Which of the following are cells that lack a nucleus and internal compartments?
Which of the following are cells that lack a nucleus and internal compartments?
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Name the region in which populations interact with each other and with the abiotic environment.
Name the region in which populations interact with each other and with the abiotic environment.
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In which of the following would you find rocks as a component?
In which of the following would you find rocks as a component?
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Quickly removing your hand from a hot stove is a demonstration of what?
Quickly removing your hand from a hot stove is a demonstration of what?
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A unicellular organism that you are examining under the microscope appears to contain a membrane surrounding the DNA. This organism belongs to which of the following?
A unicellular organism that you are examining under the microscope appears to contain a membrane surrounding the DNA. This organism belongs to which of the following?
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Which one of the following structures is characteristic of BOTH eukaryotic and prokaryotic cells?
Which one of the following structures is characteristic of BOTH eukaryotic and prokaryotic cells?
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The branch of science that studies the natural world within the context of life is?
The branch of science that studies the natural world within the context of life is?
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Which one of the following is a CORRECT statement regarding metabolism?
Which one of the following is a CORRECT statement regarding metabolism?
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Most eukaryotic cells have a membrane-bound ________ that contains the genetic material.
Most eukaryotic cells have a membrane-bound ________ that contains the genetic material.
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Which one of the following is a kingdom?
Which one of the following is a kingdom?
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Which one of the following characteristics applies to both living organisms and nonliving things?
Which one of the following characteristics applies to both living organisms and nonliving things?
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All living things are made up of at least one cell.
All living things are made up of at least one cell.
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Molecules are considered to be the smallest unit capable of exhibiting all the characteristics of life.
Molecules are considered to be the smallest unit capable of exhibiting all the characteristics of life.
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Cells arise spontaneously from nonliving chemical elements.
Cells arise spontaneously from nonliving chemical elements.
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Cells are incapable of maintaining homeostasis because they are too small.
Cells are incapable of maintaining homeostasis because they are too small.
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The process by which living organisms maintain a fairly constant internal environment despite changes in the external environment is known as?
The process by which living organisms maintain a fairly constant internal environment despite changes in the external environment is known as?
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A cell that increases in volume and mass is undergoing?
A cell that increases in volume and mass is undergoing?
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Which cell is the most efficient in its cellular functions/absorbing nutrients?
Which cell is the most efficient in its cellular functions/absorbing nutrients?
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Which is the largest biological organization from the following?
Which is the largest biological organization from the following?
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Photosynthesis is an example of?
Photosynthesis is an example of?
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Consider a group of different organisms interacting with each other and their physical environment; this represents a?
Consider a group of different organisms interacting with each other and their physical environment; this represents a?
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Which of the following does not leave the nucleus?
Which of the following does not leave the nucleus?
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Both eukaryotes and prokaryotes share the following?
Both eukaryotes and prokaryotes share the following?
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Organisms ensure a stable internal environment through?
Organisms ensure a stable internal environment through?
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Sense organs that detect stimuli?
Sense organs that detect stimuli?
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Living organisms covalently link smaller molecules to synthesize large organic molecules called __________.
Living organisms covalently link smaller molecules to synthesize large organic molecules called __________.
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If a man is driving a car and sees a red light and stops, what is the red light?
If a man is driving a car and sees a red light and stops, what is the red light?
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Arrange the following from LARGEST to SMALLEST.
Arrange the following from LARGEST to SMALLEST.
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Which one from the following is more complex?
Which one from the following is more complex?
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Communities which are interacting with each other and with the non-living matter and energy in a given area form a/an?
Communities which are interacting with each other and with the non-living matter and energy in a given area form a/an?
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Which of the following levels of biological organization is the highest?
Which of the following levels of biological organization is the highest?
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Photosynthesis in plants is an example of?
Photosynthesis in plants is an example of?
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Which one of the following sequences represents the hierarchical system of classification arranged in order from the largest to the smallest?
Which one of the following sequences represents the hierarchical system of classification arranged in order from the largest to the smallest?
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The plasma membrane of unicellular organisms has a selective barrier to the entry and exit of various substances in order to?
The plasma membrane of unicellular organisms has a selective barrier to the entry and exit of various substances in order to?
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Amoeba has the ability to grow and reproduce, which is determined by the __________ that is located in __________ material.
Amoeba has the ability to grow and reproduce, which is determined by the __________ that is located in __________ material.
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The male and female students and their teaching members of the preparatory year in Imam Abdulrahman University represent a?
The male and female students and their teaching members of the preparatory year in Imam Abdulrahman University represent a?
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You immediately move your hand away on touching a hot object. This is an example of?
You immediately move your hand away on touching a hot object. This is an example of?
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As a cell increases in size, which of the following would be correct with regards to surface area to volume ratio?
As a cell increases in size, which of the following would be correct with regards to surface area to volume ratio?
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During examination of a microorganism under the microscope, it was observed that it has a cell wall and its DNA is spread in the cytoplasm. It means that the organism belongs to?
During examination of a microorganism under the microscope, it was observed that it has a cell wall and its DNA is spread in the cytoplasm. It means that the organism belongs to?
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Which of the following categories shows less biological diversity?
Which of the following categories shows less biological diversity?
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A microorganism known as Chlamydomonas reinhardtii is examined under the microscope. Upon first observations, it appears to be unicellular, has a cell wall, a nucleus, and flagella. Which of the following kingdoms does it belong to?
A microorganism known as Chlamydomonas reinhardtii is examined under the microscope. Upon first observations, it appears to be unicellular, has a cell wall, a nucleus, and flagella. Which of the following kingdoms does it belong to?
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Bacterial attraction toward nutrient-rich compounds is considered which of the following?
Bacterial attraction toward nutrient-rich compounds is considered which of the following?
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Cells become specialized in function and structure. This is an example of what?
Cells become specialized in function and structure. This is an example of what?
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When blood glucose levels are high, the pancreas secretes insulin that stimulates skeletal muscles to absorb glucose from blood and store it as glycogen. This regulation is called what?
When blood glucose levels are high, the pancreas secretes insulin that stimulates skeletal muscles to absorb glucose from blood and store it as glycogen. This regulation is called what?
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The desert plants, Barrel cactus, have expandable stems for storing water. This is an example of what?
The desert plants, Barrel cactus, have expandable stems for storing water. This is an example of what?
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Amoeba use binary fission to produce new organisms. This biological process is known as?
Amoeba use binary fission to produce new organisms. This biological process is known as?
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Unicellular organisms with their genetic material spread in the cytoplasm belong to?
Unicellular organisms with their genetic material spread in the cytoplasm belong to?
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Many organisms of different species interacting with the non-living matter and energy region make which of the following?
Many organisms of different species interacting with the non-living matter and energy region make which of the following?
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Which of the following represents the correct order of the levels of organism?
Which of the following represents the correct order of the levels of organism?
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The small intestine uses enzymes to convert food into small particles that it can absorb. This is an example of what?
The small intestine uses enzymes to convert food into small particles that it can absorb. This is an example of what?
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If the abiotic part of the environment in a specific region is removed and the different species are left only, this will form which of the following?
If the abiotic part of the environment in a specific region is removed and the different species are left only, this will form which of the following?
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Which of the following is the most specific level of classification?
Which of the following is the most specific level of classification?
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Which one describes why a tomato plant bends towards the sunlight?
Which one describes why a tomato plant bends towards the sunlight?
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What do you call the changes that occur from the time an egg is fertilized?
What do you call the changes that occur from the time an egg is fertilized?
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Which one describes the binding of many amino acids to form a protein?
Which one describes the binding of many amino acids to form a protein?
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Which of the following levels of biological organization is the highest?
Which of the following levels of biological organization is the highest?
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To which of the following domains of life do monkeys belong?
To which of the following domains of life do monkeys belong?
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A unicellular organism that you are examining under the microscope appears to have a membrane surrounding the DNA. This organism belongs to?
A unicellular organism that you are examining under the microscope appears to have a membrane surrounding the DNA. This organism belongs to?
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Which of the following levels of organization is absent among single-celled organisms?
Which of the following levels of organization is absent among single-celled organisms?
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Camels have extra-long eyelashes to help prevent sand, dust, and other particles from getting into their eyes. Which property of life does this represent?
Camels have extra-long eyelashes to help prevent sand, dust, and other particles from getting into their eyes. Which property of life does this represent?
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Which one of the following sequences represents the hierarchical system of classification arranged in order from the largest to the smallest?
Which one of the following sequences represents the hierarchical system of classification arranged in order from the largest to the smallest?
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You immediately move your hand away upon touching a hot object. What does this represent?
You immediately move your hand away upon touching a hot object. What does this represent?
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Which one of the following levels of organization describes groups of bacteria, fungi, fish, and frogs in a pond?
Which one of the following levels of organization describes groups of bacteria, fungi, fish, and frogs in a pond?
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Movement of bacteria away from chemicals that kill cells is an example of?
Movement of bacteria away from chemicals that kill cells is an example of?
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Which of the following is correct definition of adaptation?
Which of the following is correct definition of adaptation?
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Breakdown of fats to small fatty acids and release energy is an example of?
Breakdown of fats to small fatty acids and release energy is an example of?
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How do single-cell organisms reproduce?
How do single-cell organisms reproduce?
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Which of the following describe a group of individuals of the same species living in the same area?
Which of the following describe a group of individuals of the same species living in the same area?
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Which of the following describe a process of gradual change in which new species arise from older species?
Which of the following describe a process of gradual change in which new species arise from older species?
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Which of the following is true about Bacteria and Archaea?
Which of the following is true about Bacteria and Archaea?
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Which of the following categories is more biologically diverse?
Which of the following categories is more biologically diverse?
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The desert plant has expanded stems for storing water. It is an example of which of the following?
The desert plant has expanded stems for storing water. It is an example of which of the following?
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A biology student was examining a microorganism under the microscope, and she/he observed that the organism has DNA diffused in the cytoplasm. That organism belongs to which of the following?
A biology student was examining a microorganism under the microscope, and she/he observed that the organism has DNA diffused in the cytoplasm. That organism belongs to which of the following?
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Multicellular organisms have an advantage over unicellular organisms because which of the following?
Multicellular organisms have an advantage over unicellular organisms because which of the following?
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Which of the following describes the destruction of prokaryotic organisms?
Which of the following describes the destruction of prokaryotic organisms?
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Having special compartments within the cells is characteristic of which of the following?
Having special compartments within the cells is characteristic of which of the following?
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When green plants produce chemical energy (ATP) from sun energy, they are said to undergo which of the following?
When green plants produce chemical energy (ATP) from sun energy, they are said to undergo which of the following?
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Which cell of the following organisms lacks a nucleus?
Which cell of the following organisms lacks a nucleus?
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Which one of the following sequences is right in terms of level of organization from least to most complex?
Which one of the following sequences is right in terms of level of organization from least to most complex?
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To stay alive, an organism must keep its internal environment almost unchanged through a process known as what?
To stay alive, an organism must keep its internal environment almost unchanged through a process known as what?
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A community is a hierarchy of life that includes which of the following?
A community is a hierarchy of life that includes which of the following?
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The presence of a nucleoid is a characteristic of which of the following?
The presence of a nucleoid is a characteristic of which of the following?
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What is the smallest living entity that exists in the universe?
What is the smallest living entity that exists in the universe?
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Movement of the stem and the flowers of a sunflower plant toward the sun explains which of the following processes?
Movement of the stem and the flowers of a sunflower plant toward the sun explains which of the following processes?
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Your ability to detect the cold weather in winter describes which of the following scientific terms?
Your ability to detect the cold weather in winter describes which of the following scientific terms?
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Which one of the following represents the correct order of taxonomy groups from smallest to largest?
Which one of the following represents the correct order of taxonomy groups from smallest to largest?
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The process of energy release when polysaccharides are broken down into monosaccharides is known as?
The process of energy release when polysaccharides are broken down into monosaccharides is known as?
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Interacting groups of different organisms together with their surrounding physical environment form which of the following?
Interacting groups of different organisms together with their surrounding physical environment form which of the following?
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Which level of life organization represents your stomach?
Which level of life organization represents your stomach?
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When cells increase in their volumes and masses, this means that they are undergoing?
When cells increase in their volumes and masses, this means that they are undergoing?
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Study Notes
Levels of Biological Organization
- Genus: Most similar members in a classification system
- Order: Second most similar but less similar than a genus
- Phylum: Broader level of classification than genus and order
- Class: Broader than genus and order, but less than phylum
Classification of Organisms
- Domains: Three primary categories of life: Eukarya, Archaea, Bacteria.
- Monkeys belong to the Eukarya domain.
Ecological Relationships
- Population: Group of organisms from the same species in a given area.
- Ecosystem: Includes living (biotic) and non-living (abiotic) components in a given region, such as the interactions of the abiotic environment and the organisms within South Africa.
- Community: Multiple species interacting within a specific location.
- Species: Group of related organisms that are capable of breeding and producing fertile offspring.
Naming Scientific Organisms
- Scientific names are always in two parts: Genus (capitalized) and species (lowercase).
- The correct scientific name for humans is Homo sapiens.
Levels of Cellular Organization
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Increasing levels of organization:
- Atom: Smallest unit of matter
- Molecule: Formed by two or more atoms
- Organelle: Specialized structures within a cell
- Cell: Basic unit of life
- Tissue: Group of similar cells performing a specific function
- Organ: Made of different tissues working together for a specific function
- Organ System: Group of organs working together
- Organism: A complete living being
Types of Cells
- Prokaryotes: Cells without a nucleus or internal compartments.
- Eukaryotes: Cells with a nucleus and internal compartments.
Ecological Systems
- Biosphere: The sum of all ecosystems on Earth.
- Ecosystem: Living and non-living components interacting within a specific area.
- Community: Interacting populations of different species in an area.
Properties of living things
- Response: Reactions to stimuli (e.g., quickly removing your hand from a hot stove).
- Regulation: Maintaining a stable internal environment (homeostasis).
- Development: Changes over the life of an organism.
- Adaptation: Traits that help organisms survive and reproduce in their environment.
Characteristics of Eukaryotes and Prokaryotes
- Cell membrane (plasma membrane): Found in both types of cells.
- Nucleus: Only found in eukaryotes.
- Mitochondria. Only found in eukaryotes.
- Endoplasmic Reticulum: Only found in eukaryotes.
The Study of Life (Biology*)
- Biology: The branch of science that studies life.
- Metabolism: The sum of all chemical reactions in a living organism, including the breakdown of molecules (catabolism) and the build-up of molecules (anabolism).
- Homeostasis: Maintaining a stable internal environment.
Cellular Components
- Cytoplasm: The gel-like substance that fills a cell.
- Nucleus: Contains the DNA.
- Mitochondria: Responsible for cellular respiration and energy production.
- Lysosomes: Contain enzymes for digesting waste materials.
- Cell Wall: Provides structural support, especially in plant cells.
- Plasma membrane: A selectively permeable membrane that regulates what enters and exits the cell.
Kingdoms
- Animalia: Multicellular, heterotrophic organisms (obtain nutrients from other organisms).
- Plantae: Multicellular, photosynthetic organisms (produce their own food).
- Fungi: Heterotrophic organisms that are mostly multicellular and obtain nutrients by absorbing them.
- Protista: Unicellular or simple multicellular eukaryotes.
- Bacteria: Prokaryotes with a diverse range of metabolic capabilities.
- Archaea: Prokaryotes known for their ability to thrive in extreme environments.
Properties of Life and Non-life
- Living things are made up of matter: Atoms and molecules.
- Organisms are capable of reproduction: Producing offspring.
- Organisms use energy: For growth, movement, and other processes.
- Organisms contain DNA: Genetic instructions that determine their traits.
Cellular Processes
- Homeostasis: Maintaining a balanced internal environment.
- Metabolism: The sum of all chemical reactions in an organism.
- Growth: Increase in size and volume due to cell division and growth.
- Development: Changes over an organism's life.
The Science of Life
- Stimulus: A change in the environment that can trigger a response.
- Response: A reaction to a stimulus.
- Homeostasis: The ability to maintain a stable internal environment.
- Adaptation: The ability of an organism to survive and reproduce in its environment over many generations.
- Evolution: Gradual changes in a species over time.
The Cell
- Surface area to volume ratio: As a cell increases in size, its surface area-to-volume ratio decreases (less surface area relative to its volume). This impacts cellular processes and efficiency.
Prokaryotes vs. Eukaryotes
- Prokaryotes (bacteria and archaea): Have a cell wall and DNA spread throughout the cytoplasm.
- Eukaryotes: Have a nucleus (membrane-bound compartment containing DNA).
Cellular Processes
- Chemotaxis: Movement of an organism in response to chemical stimuli.
- Phototaxis: Movement of an organism in response to light.
- Development: Changes during the life of an organism.
- Homeostasis: Maintaining a stable internal environment.
- Adaptation: Traits that help organisms survive and reproduce in their environment.
- Reproduction: The process of producing offspring.
Levels of Biological Organization
- Organelle: A specialized sub-cellular component within a cell (e.g., mitochondria, chloroplasts).
- Cell: The basic unit of life.
- Tissue: A group of similar cells performing a specific function (e.g., muscle tissue, nervous tissue).
- Organ: A structure made up of different tissues working together to perform a specific function (e.g., the heart, the stomach).
- Organ System: A group of organs working together to perform a major function (e.g., the digestive system, the circulatory system).
- Organism: A complete living being (e.g., a human, a tree, a bacterium).
Ecological Systems
- Population: A group of individuals of the same species living in the same area.
- Community: Interacting populations of different species in an area.
- Ecosystem: All the living and non-living components in an area.
- Biosphere: The sum of all ecosystems on Earth.
Processes of Life
- Anabolism: The buildup of molecules (e.g., photosynthesis).
- Catabolism: The breakdown of molecules (e.g., cellular respiration).
Classification Systems
- Domain: The highest level of classification (e.g., Eukarya, Bacteria, Archaea).
- Kingdom: The next level of classification (e.g., Animalia, Plantae).
- Phylum: A group of related classes.
- Class: A group of related orders.
- Order: A group of related families.
- Family: A group of related genera.
- Genus: A group of related species (e.g., Homo).
- Species: A group of organisms that can interbreed and produce fertile offspring (e.g., sapiens).
Key Points
- Homeostasis: Essential to survival.
- Cells: Foundation of all living organisms.
- Adaptation: Crucial for survival in changing environments.
- Evolution: The driving force behind biodiversity.
- Levels of organization: Explain complexity in nature.
- Diversity: A result of evolution and adaptation.
- Taxonomy: A system for classifying organisms.
- Prokaryotes: Important for many ecological roles.
Additional Notes
- Organisms are classified based on shared characteristics.
- The classification system is hierarchical and helps scientists to understand the relationships between organisms.
- The study of biology is essential for understanding the natural world and its challenges.
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Description
Test your knowledge of the various levels of biological organization and classification systems. This quiz covers domains, populations, ecosystems, and scientific naming conventions. Challenge yourself to understand how different organisms relate and interact within their environments.
