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Cell Structure & Function
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What does it mean to say that the cell is the most "basic unit of life"?
If a cell was broken down into its parts, those parts would not be considered living on their own
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What is the main function for nucleic acids in a cell?
provide information/instructions for making an organism (and proteins)
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What is the purpose of proteins embedded in the cell membrane?
transport, communication, signaling, connecting cells, etc.
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Finish the sentence: When viewing cells through a microscope, the _____________________ is usually visible for eukaryotic and prokaryotic cells.
cell membrane
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T/F: The cell theory applies to plants, animals, bacteria, rocks, and soil. Explain.
False; The cell theory only applies to LIVING organisms.
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Give an example for organisms that are made of prokaryotic cells.
bacteria
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What is the job of the cell membrane?
regulates/controls what goes in and out of the cell
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What is the main macromolecule that makes up the cell membrane?
lipids (phospholipid bilayer)
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Explain the structure of a phospholipid.
Hydrophilic head; 2 hydrophobic tails
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What are orgelles?
specialized structures found in eukaryotic cells that allow for specific functions
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How many cells make up eukaryotic organisms?
many (multicellular)
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What does the cell theory state?
1. all living things are made of cells 2. cells are the basic unit of life 3. cells come from other cells
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Why are ribosomes important for the cell?
They are the site for protein synthesis.
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Which types of cells contain nucleic acids?
ALL CELLS!
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Which structures are found in ALL cells?
cell membrane, cytoplasm, DNA, ribosomes
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Where is the genetic information found for prokaryotic cells?
free-floating (in the cytoplasm in a region called the nucleoid)
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Give an example for organisms that are made of eukaryotic cells.
animal, plant, fungi, protist
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What is a nucleus? Which colored structure is it in the image?
organelle that controls protects a cell's DNA- red
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Explain why humans have so many different types of cells.
specialized cells for specialized functions
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What type of cells are pictured? How do you know?
eukaryotic cells (nucleus present)
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What is the purpose of carbohydrates found in/on the plasma membrane?
structural support/ cell signaling and recognition
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How many cells make up prokaryotic organims?
1
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Which major structures do plant cells have that animal cells lack?
chloroplasts, cell wall, central vacuole
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What are the two main types of cells?
prokaryotic, eukaryotic
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What type of cell is pictured? How do you know?
bacteria (prokaryotic) cell--no nucleus; coccus/sphere shaped
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