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| states that all living things are made of cells, cells are the basic units of of structure & function in living things, new cells are produced from existing cells |
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| a thin flexible barrier that surrounds the cell |
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nucleus
(plural: nuclei)
[image]
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eukaryotes (yoo KAR ee ohts)
[image] |
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| cells that enclose their DNA in nuclei |
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prokaryotes (pro KAR ee ohts)
[image] |
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| cells that do not enclose DNA in nuclei |
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| the portion of the cell outside the nucleus |
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performs important cellular functions within a eukaryotic cell
"little organ" |
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| small organelles filled with enzymes |
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| What is the function of Lyosomes? |
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| break down lipids, carboydrates, and proteins into small molecules that can be used by the rest of the cell |
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| helps cell maintain its shape and is also involved in movement |
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| threadlike structures made up of a protein called actin |
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| hollow structures made up of proteins known as tubulins |
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| located near the nucleus, help organize cell division, animal cells only, part of cytoskelton |
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| found throughout the cytoplasm, makes & assembles proteins, Small particles of RNA & Protein, |
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| endoplasmic reticulum (ER) |
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| is where lipid parts of the cell membrane are assembled |
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| an organelle which appears as a stack of flattened membranes, puts finishing touches on proteins before they leave the cell |
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| What is the function of the golgi apparatus? |
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Definition
| modifies, sorts, and packages proteins and other materials from the endoplasmic reticulum for storage in the cell or release outside the cell |
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| capture the energy from sunlight, convert it into food, cholorphyll photosynthesis, organelle |
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| power house, organelle, in all eukaryotic cells |
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| a strong supporting layer around the membrane, Functions: support, shape & protects |
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| gives cell membranes a flexible structure that forms a strong barrier between the cell & its surroundings |
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| some substances can pass across them and others cannot |
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| diffusion is the driving force behind..... |
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| the movement of many substances across the cell membrane |
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| the process by which particles move from an area of high concentration to an area of lower concentration |
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facilitated diffusion
[image] |
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the process in which molecules
that cannot directly diffuse across the membrane
pass through special protein channels
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aquaporins
(ak wuh PAWRinz)
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water channel proteins contained in many cells
[image]
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diffusion of water through a selectively permeable membrane
[image]
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| force that moves water across a semipermeable membrane |
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homeostasis
(homeo- means "the same") |
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| maintaining constant internal physical and chemical conditions |
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| a group of similar cells that performs a specific function |
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| a group of tissues that perform a specific function or group of functions |
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a group of organs that work together to perform a specific function
Ex: the stomach, pancrease & intestines form the digestive system |
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| allows cells to respond to chemical changes |
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| molecule that translate information from DNA |
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deoxyribonucleic acid
[image] |
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the blueprint of life
Located: in cell nuclei
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light micropscope
[image] |
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| uses light and magnifying lenses |
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uses a beam of electrons to create an image of the specimen
[image] |
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| For diffusion to occur there must be.... |
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| areas of different concentration. |
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| German botantist Matthias Schleiden |
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| all plants are made of cells |
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| German biologist Theodore Schwann |
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| all animals are made of cells |
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