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Chapter 2
chemistry, cell and tissues
| Question | Answer |
|---|---|
| three main parts of the cell | plasma membrane, cytoplasm, nucleus |
| parts of cell- "little organ" like structure | organelle |
| forms outer boundry of cell, thin two layered membrane of phospholids containing proteins, is selectively permeable seperates the inside form the outside | plasma membrane |
| materials that lie within the boundary of the cell(the membrane that surrounds the cell) | cytoplasm |
| may attach to rough ER or lie free in cytoplasm often Called the "PROTEIN FACTOR" | Ribsomes |
| composed of inner and outer membranes, energy releasing chemical reactions Often called POWER Plants of the Cell Contain one DNA molecule | mitochondria |
| the chemical processing and packing center | golgi apparatus |
| serves as the centers for the cellular digestion | lysosomes |
| fine hairlike extensions found on free or exposed surfaces of some cells | cilia |
| "tails" of sperm cells are the only example of flagella in humans | flagella |
| serves as the "brain" for the control of the cell's metabolic actvities and cell division. 46 chromosomes contain DNA, which contains the genetic code. | nucleus |
| does not require energy from the cell | passive transport |
| permits a cell to engulf foreign material | phago |
| used to incorporated fluids or dissolved substances. | pino |
| (requires cell energy in the form of ATP) | active transport |
| transport of substances into and out of the cell. retains the cytoplasm | cell membrane |
| regulates transport of substances into and out of the nucleus | nuclear membrane |
| a clear semifluid medium that fils the spaces around the chromatin and the nucleoli | nucleoplasm |
| functions as a reservoir for RNA | nucleolus |
| provides passage s through which transport of substances occurs in cytoplasm | endoplasmic reticulum(ER) |
| enzymes oxidizes cell substances | peroxisome |
| contains two centroiles that are functional during animal cell division(rod shaped organelles) | centrosome and centrioles |
| Interphase, prophase,metaphase,anaphase and telophase are 5 stages of what? | mitosis |
| DNA Replicate | interphase |
| first stage- chromosomes(pairs of linked chromatids)appear centroiles move away from nucleus | prophase |
| second stage of mitosis | metaphase |
| third phase- centromeres break apart | anaphase |
| fourth stage- cell division is completed cytoplasm is divided (cytokinesis) | telophase |
| forms internal framework | cytoskeleton |
| meaning "colored substance" contains the genetic code | chromatin |
| codes that are stored into individual units | chromosomes |
| membranous sacs | vacuoles |
| the nucleus is surrounded by a membrane called | nuclear envelope |
| possessing a true nucleus | eukaryotic |
| lacking a true nucleus | prokaryotic |
| amino acids are attached together into chains called | peptides |
| ribonucleic acid | RNA |
| deoxyribonucleic acid | DNA |
| adenosine triphosphate | ATP |
Created by:
kfrank1
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