Podcast
Questions and Answers
Which of the following is NOT a characteristic of living organisms?
Which of the following is NOT a characteristic of living organisms?
- Maintaining a stable internal environment (homeostasis)
- Inability to adapt to environmental changes (correct)
- Metabolism
- Cellular composition
Viruses are considered living organisms because they can reproduce independently.
Viruses are considered living organisms because they can reproduce independently.
False (B)
What is the basic structural and functional unit of all known living organisms?
What is the basic structural and functional unit of all known living organisms?
cell
The process by which organisms maintain a stable internal environment is called ______.
The process by which organisms maintain a stable internal environment is called ______.
Match the following types of viruses with their description:
Match the following types of viruses with their description:
Which of the following is true about cell theory?
Which of the following is true about cell theory?
Prokaryotic cells have membrane-bound organelles.
Prokaryotic cells have membrane-bound organelles.
What is the term for organisms composed of only one cell?
What is the term for organisms composed of only one cell?
The double layer structure that forms a barrier between the cell and its external environment is called the ______.
The double layer structure that forms a barrier between the cell and its external environment is called the ______.
Which of the following cellular components is found in both prokaryotic and eukaryotic cells?
Which of the following cellular components is found in both prokaryotic and eukaryotic cells?
Which of the following is a key difference between single-celled and multicellular organisms?
Which of the following is a key difference between single-celled and multicellular organisms?
Metabolism refers only to the breakdown of substances, not the synthesis of new molecules.
Metabolism refers only to the breakdown of substances, not the synthesis of new molecules.
Name one example of a unicellular organism mentioned.
Name one example of a unicellular organism mentioned.
In plants, cells organize into tissues, tissues organize into ____, and these organize into organ systems and finally into the entire organism.
In plants, cells organize into tissues, tissues organize into ____, and these organize into organ systems and finally into the entire organism.
Match the following animal tissues with their examples:
Match the following animal tissues with their examples:
What is the function of enzymes in metabolic processes?
What is the function of enzymes in metabolic processes?
The cell membrane is composed of a single layer of lipids.
The cell membrane is composed of a single layer of lipids.
Which energy molecule is a reactant for protein synthesis?
Which energy molecule is a reactant for protein synthesis?
Facilitated diffusion requires membrane ______.
Facilitated diffusion requires membrane ______.
Match the correct words:
Match the correct words:
Flashcards
Cell Theory
Cell Theory
All living organisms are composed of cells; the cell is the basic structural and functional unit of organisms.
Metabolism
Metabolism
The chemical processes that occur within a living organism in order to maintain life.
Response to stimuli
Response to stimuli
Reaction to a stimulus.
Homeostasis
Homeostasis
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Reproduction and Heredity
Reproduction and Heredity
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Adaptation and Evolution
Adaptation and Evolution
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Virus
Virus
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Cell
Cell
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Unicellular organism
Unicellular organism
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Multicellular organism
Multicellular organism
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Amoeba
Amoeba
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Paramecium
Paramecium
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Tissue
Tissue
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Organ
Organ
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Organ System
Organ System
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Study Notes
- The presentation is about the characteristics of living things.
Characteristics of Life Phenomena
- Living things are composed of cells.
- Metabolism involves chemical reactions mediated by enzymes.
- Growth and development occur in living organisms.
- Living organisms respond to stimuli.
- Homeostasis is the maintenance of a stable internal environment.
- Reproduction and heredity are key aspects of life.
- Adaptation and evolution allow organisms to survive and change over time.
Various Viruses
- Tobacco mosaic virus, adenovirus, influenza virus, and bacteriophage T4 are examples of different types of viruses.
- Viruses maintain protein structure.
Cell Theory
- Proposed in 1839 by Schleiden and Schwann.
- All living organisms are composed of cells.
- Cells are the basic structural and functional units of life.
- All cells arise from pre-existing cells.
- Cells are general elements of biological systems.
Structural Units of Living Things
- Cells are the structural units composing organisms.
- Cells are the functional units where life activities occur.
Cells
- Cells are the fundamental units carrying out life activities.
- Cells interact with the external environment, separated by a membrane.
- Cyanobacteria are photosynthetic bacteria.
Types of Cells
- Prokaryotic cells include bacteria and germs, they lack a true nucleus.
- Eukaryotic cells have membrane-bound organelles.
Cellular Structure
- The cellular system can either be unicellular or multicellular.
- Unicellular : Amoeba and paramecium are examples of unicellular organisms.
- Multicellular : Consist of many cells.
Multicellular Organisms
- Multicellular organisms consist of cells, tissues, organs, and systems.
- Plants consist of cells, tissues, tissue systems, organs, and individuals - examples include sieve cells, xylem/phloem, vascular bundles, stems, and roses.
- Animals are composed of cells, tissues, organs, organ systems, and individual - examples are nerve cells, nerve tissue, the brain, the nervous system, and monkeys.
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