Erstellt von Sydney Franko
vor fast 9 Jahre
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Frage | Antworten |
Cell Theory | 1. All organisms are made of cells 2. Cell is the smallest unit of life 3. All living things come from pre-existing cells |
Two Main Types of Cells | 1. Prokaryotic 2. Eukaryotic |
Differences between Prokaryotic and Eukaryotic | Prokaryotic: No nucleus Loosely organized No organelles Bacteria only Eukaryotic: Have nucleus Organized nucleus Have organelles Protist, Plants, Fungi, Animals |
Cell Organization | Plasma membrane DNA region Cytoplasm |
Plasma membrane | Controls movement of material into and out of the cell |
DNA region | Heredity and Reproduction |
Cytoplasm | "Fluid" of the cell |
2 Types of Prokaryotic Cells | Eubacteria and Archaebacteria |
What is in the structure of Prokaryotic Cells? | Plasma membrane Cell wall Nucleoid May have flagella for movement Pilli (stick to things) |
What is contained in a nucleoid? | Singular circular chromosomes Ribosomes occur in the cytoplasm |
2 Types of Cell Membranes | Phospholipid Bilayer Fluid Mosaic Model |
Phospholipid bilayer | Hydrophobic and hydrophilic interactions |
Fluid Mosaic Model | Phospholipids (most abundant) Glycolipids Sterols (cholesterol in animal membranes) Proteins |
What are the functions of membrane protein? | 1. Transport- move water soluble substances (molecules or ions) across 2. Receptor- Interact with other substances such as hormones which change cell activities 3. Recognition- Identify the cell type (by oligosaccharide chains) 4. Adhesion- Keep cells of the same type together |
What are the limitations of cells? | 1. Surface area to volume constraints 2. The cell membrane can only serve a certain amount of cell volume 3. Inflow of nutrients and outflow of wastes must be fast enough 4. Materials must be able to move easily through the cytoplasm |
What is an organelle? | An internal membrane bound sac or compartment that serves one or more specialized functions inside eukaryotic cells |
Types of Organelles | Nucleus Endoplasmic Reticulum Golgi body Vesicles Mitochondria Chloroplasts and plastids (in plant only) |
Non-membrane bound organelles | Ribosomes Cytoskeleton Plasma membrane |
What is contained in the nucleus? | DNA Nuclear envelope Nucleoplasm Nucleolus Chromosomes |
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