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14 Cards in this Set
- Front
- Back
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Structure of a typical cell 3 |
Plasma membrane- boundaries Cytoplasm (cytosol and organelles) - every in between Nucleus- biggest |
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Describe the composition of cytosol (intercellular fluid) |
Mostly water but has solvent dissolved and suspended in it. Inclusions: small chemicals dissolved Organelles: suspended particles |
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Structure and functions of the main organelles in a human cell |
Mitochondria: DNA , make energy, double membrane, outer smooth, inner fold Ribosome: small round structures like granules ER rough: uneven with ribosomes on the outside Smooth: membranes vesicles and tubules Lysosomes: contain enzymes for intercellular digestion Vacuoles: intercellular digestion and release of cellular waste products Cytoskeleton: hold in place the structures within the cell, support and maintain the cell shape Centrosomes: 2 groups of microtubules , cell division Golgi apparatus: membranous structure, single membrane, flat sacks
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Describe the structure of the plasma (cell) membrane and function |
Lipid layer: phospholipid carbohydrates proteins F: barrier, protection, hold cell together,attachment, defines, structure of cell, shape, connection , semi-permeable, transport in and out, communication, interaction, recognition, sensing, membrane potential, enzyme action, movement |
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Microvilli |
Tiny projections on the free surfaces of some epithelial cells, increases surface area for absorption |
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Microvilli |
Tiny projections on the free surfaces of some epithelial cells, increases surface area for absorption |
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Cilia |
Tiny hair projections that move in a wave like manner to propel substances across the exposed cell surface |
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Microvilli |
Tiny projections on the free surfaces of some epithelial cells, increases surface area for absorption |
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Cilia |
Tiny hair projections that move in a wave like manner to propel substances across the exposed cell surface |
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Structure and role of the nucleus
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Biggest organelle- control centre of the cell, double membrane with large pores for communication with surrounding cytosol. Inside nucleus is chromatin also a nucleolous which produces ribosomes |
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Microvilli |
Tiny projections on the free surfaces of some epithelial cells, increases surface area for absorption |
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Cilia |
Tiny hair projections that move in a wave like manner to propel substances across the exposed cell surface |
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Structure and role of the nucleus
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Biggest organelle- control centre of the cell, double membrane with large pores for communication with surrounding cytosol. Inside nucleus is chromatin also a nucleolous which produces ribosomes |
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Intercellular fluid Extracellular fluid |
Intercellular: fluid in tissues that baths all of our cells and has major and endless roles to play Extracellular: substances contributing to body mass that are found outside our cells |
