Question | Answer |
three main parts of a cell | plasma membrane, cytoplasm, and nucleus |
plasma membrane | is the membrane that encloses the cytoplasm and forms the outer boundary of the cell, keeps the cell whole and intact,allows sertain substances to move through and gaurds agianst others,functions as a communication device |
structures of plasma membrane | phospholipid(fluid frame work), cholesterols(helps prvent breakage of the membrane by stabilizing the phospholipid),proteins(some serve as receptors for certain other molecules),carbohydrate chains(play a role in identification of cell types |
cytoplasm | the internal living material of cells, lies between the plasma membrane and the nucleus, |
organelles | the small structure that make up most of the cytoplasm |
organelles found in cytoplasm | ribosomes, endoplasmic reticulum, golgi apparatus, mitochondria, lysosomes, centrioles, cilia, flagella, microvilli |
nucleus | ultimatley controlls every organelle in the cytoplasm,controls the complex pocess of cell reproduction. it must function properly for a cell to accomplish it's normal activities and be able to duplicate itself. |
nuclear envelope | surounds the nucleus, made of two separate membranes, ecloses a special type of cell material in the nucleus called nucleoplasm |
two of the most important structures in nucleoplasm | nucleolus, chromatin and chromosomes |
DNA(deoxyribonucleic acid) | the genetic material often described as the chemical cookbook of the body. determines everything from gender and metabolism to body build and hair color in every human being. during cell division DNA molecules become tightly coiled. |
three main parts of a cell | plasma membrane, cytoplasm, and nucleus |
plasma membrane | is the membrane that encloses the cytoplasm and forms the outer boundary of the cell, keeps the cell whole and intact,allows sertain substances to move through and gaurds agianst others,functions as a communication device |
structures of plasma membrane | phospholipid(fluid frame work), cholesterols(helps prvent breakage of the membrane by stabilizing the phospholipid),proteins(some serve as receptors for certain other molecules),carbohydrate chains(play a role in identification of cell types |
cytoplasm | the internal living material of cells, lies between the plasma membrane and the nucleus, |
organelles | the small structure that make up most of the cytoplasm |
organelles found in cytoplasm | ribosomes, endoplasmic reticulum, golgi apparatus, mitochondria, lysosomes, centrioles, cilia, flagella, microvilli |
nucleus | ultimatley controlls every organelle in the cytoplasm,controls the complex pocess of cell reproduction. it must function properly for a cell to accomplish it's normal activities and be able to duplicate itself. |
nuclear envelope | surounds the nucleus, made of two separate membranes, ecloses a special type of cell material in the nucleus called nucleoplasm |
two of the most important structures in nucleoplasm | nucleolus, chromatin granules |
DNA(deoxyribonucleic acid) | the genetic material often described as the chemical cookbook of the body. determines everything from gender and metabolism to body build and hair color in every human being. during cel division DNA molecules become tightly coiled. |
| each cell of the body contains a total of 46 different DNA molecules in its nucleus and one copy of a 47th DNA molecule in each of its mitochondria. |