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Cell Structure
Question | Answer |
---|---|
Name the parts of a cell | Cell membrane, cytoplasm, organelles, nucleus |
acts as a barrier; separates intra-cellular and extra-cellular compartments, selectively permeable, and provides some structure. | cell membrane |
gel-like internal environment of the cell | cytoplasm |
subcellular structures within the cytoplasm; perform specific functions | organelles |
contains the cell's DNA. | Nucleus |
Composed primarily of phospholipids and proteins. | Cell Membrane |
____ can form a bilayer. | Phospholipids |
restricts the passage of water and water-soluble molecules and ions | bi-layer of phospholipids |
Membrane proteins provide specific functions. name the functions | transporters- water soluable molecules channels- allows passage way receptors- hormones enzymes **Mostly Lipid** |
Out of the cell | Exocytosis |
Inside of the cell | Endocytosis |
two types of endocytosis | Phagocytosis and pinocytosis |
surround and engulf particles, white blood cells and macrophages | phagocytosis |
cell membrane invaginates, fuses together and then pinches off, entering the cell. | pinocytosis |
tiny, hairlike structures that protrude from the cell, coordinated movement, within the respiratory system and the female reproductive tract. | cilia |
single whip-like structure that propels the sperm cell through its environment | flagellum |
numerous tiny folds in the cell membrane increase surface area (diffusion) | microvilli |
membrane bound organelles that contain digestive enzymes | Lysosomes |
fuse with food vacuoles to digest products of endocytosis | Lysosomes |
Most cells contain hundreads to thousands of these organelles | Mitochondria |
play an important role in the production of energy for the cell | mitochondria |
Contains ribosomes (bumps of protein) | Rough Endoplasmic Reticulum |
important role in protein synthesis | Rough Endoplasmic Reticulum |
storage of Ca2+ in striated muscle cells | smooth Endoplasmic Reticulum |