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 Chapter Notes: Exploring Life 38 Flashcards |
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What are the seven characteristics that all living things share? |
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Living things share key characteristics.
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True or False: Viruses are considered living things because they can reproduce. |
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False. Viruses cannot reproduce independently; they must invade host cells to replicate. |
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Fill in the blank: Cells are the ___ units of life. |
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Smallest |
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What did Robert Hooke discover using a microscope? |
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He discovered cells by observing a thin slice of cork. |
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What are prokaryotic cells characterized by? |
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Prokaryotic cells do not have a lining around their genetic material and are generally smaller than eukaryotic cells. |
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Riddle: I am the smallest unit of life, but I can form complex beings. What am I? |
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A cell. |
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What are the two types of electron microscopes and how do they differ? |
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Electron microscopes include TEMs and SEMs.
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True or False: All living things are multicellular. |
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False. Some living things, like bacteria, are unicellular. |
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Fill in the blank: Microscopes help scientists to see ___ that cannot be seen by the naked eye. |
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Cells |
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What role do organelles play in eukaryotic cells? |
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Organelles perform specific functions necessary for the cell's life processes. |
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How do multicellular organisms differ from unicellular organisms? |
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Multicellular organisms have multiple cells.
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Riddle: I can be a plant or an animal, but I always have a nucleus. What am I? |
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A eukaryotic cell. |
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What distinguishes the three domains of life? |
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The three domains are Bacteria, Archaea, and Eukarya, differing in cell type, structure, and genetic makeup. |
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Fill in the blank: The cell theory states that all living things are made of ___ and that all cells come from ___ cells. |
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Cells; existing |
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What is homeostasis and why is it important for living organisms? |
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Homeostasis is the process of maintaining stable internal conditions, which is crucial for the survival and proper functioning of living organisms. |
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True or False: All cells can be classified as either prokaryotic or eukaryotic. |
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True. |
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What is the primary function of ribosomes in cells? |
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Ribosomes are responsible for protein synthesis. |
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Riddle: I can be helpful or harmful, and I need a host to reproduce. What am I? |
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A virus. |
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What is the significance of Anton van Leeuwenhoek's contributions to microscopy? |
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He improved microscope design, allowing for greater magnification and the discovery of microscopic organisms. |
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Completed! Keep practicing to master all of them. |
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