TASK 1. Indicate the cell type. Watch the video and fill in the table by matching the cell characteristics to the particular cell. CELL (left)_____________________ CELL (right)_____________________ Bacteria and cyanobacteria - prokaryote All other cells - eukaryote No true nucleus True nucleus Lack membrane-bound organelles Possess subcellular organelles Evolved from much smaller prokaryotic cells Contain DNA DNA is visible as a long irregularly shaped molecule DNA is packaged together with special proteins, called chromosomes Specific number of chromosomes Cell membrane, cytoplasm, and various organelles Have ribosomes and make proteins
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Hi! My responsibility is to add stability and protection to plant cells. What am I? I produce proteins inside the cell. What am I? Hello! I have a green pigment called chlorophyll. I also absorb solar energy to do the process of photosynthesis. What am I? Good morning! My work is to store food materials and excrete waste materials. I take up large space on plants and make the leaves of plants fresh. What am I? Hi! All organelles are embedded substances. What am I?
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Match the general parts of the cell with their correct function: - The outer boundary of cells; controls the entry and exit of substances. - Largest organelle of the cell: contains DNA. - The structures upon which protein synthesis directly takes place. - Extensive membrane system upon which protein synthesis takes place. - Stacks of flattened membranes; modifies, packages, and distributes proteins and lipids. - Vesicles that contain digestive enzymes. - Major sites of ATP synthesis by the process of respiration. - Used in the formation of microtubules found in cilia and flagella. - Move materials over the surfaces of cells. - Increase surface area of the plasma membrane for absorption of substances. - Propels spermatozoa in humans.
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Activity 6: Comparing Cells Worksheet Use your textbook to compare the structures of the cells of prokaryotes, protists, plants, and animals. Put an X if the structure is ALWAYS found in the cell type indicated. Put an * asterisk if it is only found in some members of the cell type indicated. Put nothing if the structure is NEVER found in the cell type indicated. See Protist example below: Flagella, cell walls, and chloroplasts are only found in some, but not all, of protist cells. Protists do not have central vacuoles. Characteristic | Prokaryotic | Plant cell | Animal cell | Protist cell Flagella | | | | * Plasma membrane | | | | X Cell wall | | | | * Cytoplasm | | | | X Ribosomes | | | | X Nucleus | | | | X Rough Endoplasmic Reticulum | | | | X Smooth Endoplasmic Reticulum | | | | X Golgi Complex | | | | X Lysosome | | | | X Mitochondria | | | | X Chloroplast | | | | * Central Vacuole | | | | DNA | | | | X Cytoskeleton | | | | X
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