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Stack #4537568
| Question | Answer |
|---|---|
| plasma membrane | membrane (also called the cell membrane) is a thin coat of lipids that surrounds a cell. |
| Cytoplasm | refers to all of the cellular material inside the plasma membrane. |
| Ribosomes | are structures in the cytoplasm where proteins are made. |
| The nucleus | of a cell is a structure in the cytoplasm that is surrounded by a membrane (the nuclear membrane) and contains DNA. |
| Prokaryotic cells | cells are cells without a nucleus. The DNA in prokaryotic cells is in the cytoplasm rather than enclosed within a nuclear membrane. |
| prokaryotes. | They were the first type of organisms to evolve and are still the most common organisms today. |
| Eukaryotic cells | cells are cells that contain a nucleus. A typical eukaryotic cell is shown in Figure 3.7. |
| eukaryotes, | and they range from fungi to people. Eukaryotic cells also contain other organelles besides the nucleus. |
| organelle | a structure within the cytoplasm that performs a specific job in the cell. |
| Viruses, | like the one depicted in Figure 3.8, are tiny particles that may cause disease. |
| phospholipid bilayer | a plasma membrane arranged in two layers |
| cytoskeleton, | which consists of thread-like filaments and tubules. |
| mitochondria) | mitochondria) is an organelle that makes energy available to the cell. |
| ATP | (adenosine triphosphate), an energy-carrying molecule that is used almost universally inside cells for energy. |
| endosymbiotic theory, | and it is widely accepted by biologists today |
| central vacuole. | |
| This vacuole can make up as much as 90% of the cell’s volume. |