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Cells/scopes 2011
Cells and Microscopes 2011
| Question | Answer |
|---|---|
| anything that can live on its own is an ________ | organism |
| cell-tissue-organ-organ system-organism. This process is called: | organization |
| membrane covered structure that contains all the materials necessary for life is called a | cell |
| contains all materials necessary for life | cell |
| over 200 types in the human body | cell |
| a group of cells working together to perform a specific job is called an organ | true |
| what is made up of two or more tissues that work together to perform a specific job? | Organ |
| what is a group of organs working together? | Organ system |
| Who first saw dead cells in cork? | Robert Hooke |
| Who first observed living cells in pond water? | Anton Van Leewenhoek |
| the cell theory has 7 parts | False, it only has 3 parts |
| all organisms are composed of one or more cells | part of cell theory |
| cell is basic unit of life in all living things | part of cell theory |
| All cells come from other cells | part of cell theory |
| Why are cells small? | the inside grows faster than the outside |
| Why are cells small? | If it was big it would not be able to bring in enough nutrients or get rid of enough waste to keep cell alive |
| What has no nucleus; i.e bacteria | Prokaryote |
| What has a nucleus; i.e animal | Eukaryote |
| what are tiny organs of function that help a cell survive? | Organelles |
| Do organelles have a specific job? | yes |
| What is the jellylike material that surrounds organelles? | cytoplasm |
| What allows nutrients & waste to move in & out of the cell? | cell membrane |
| What are made of phospholipids that don't like water? | cell membrane |
| The cell membrane controls what comes in & out of cell | True |
| all cells have a cell membrane | True |
| What is the largest organelle? | Nucleus |
| What stores DNA-deoxyribonucleic acid? | Nucleus |
| What directs activities of the cell? | DNA-deoxyribonucleic acid |
| What is found in the nucleus? | nucleolus |
| What stores materials needed to make ribosomes? | nucleolus |
| what is the smallest and most abundant organelle? (there are a lot of them) | ribosomes |
| This is where amino acids hook together to make protiens | ribosomes |
| These are sacks and tunnels of membranes that carry substances to the outside of cell | endoplasmic reticulum(ER) |
| What is covered with ribosomes? | rough ER |
| what are not covered with ribosomes? | smooth ER |
| What are flattened stacked membranes? | Golgi bodies |
| What changes lipids and protiens from rough ER, pinches them off into sacks (vesicles) and ships them out of the cell? | golgi bodies |
| the membrane bound structure that carries substances from golgi bodies is called a _______ | vesicle |
| What contain digestive enzymes that break down bacteria and old cells? | lysosomes |
| Where is glucose broken down and energy released? | mitochondria |
| Which organs have more mitochondria? | Those that are more active like muscles |
| What is found in mitochondria? | cristae |
| cristae increases surface area so more glucose can be broken down and more energy is released | true |
| What is made of cellulose, is tough and rigid, is found in plant cells, and gives plant cells structure? | cell wall |
| what are found in plant cells and contain chlorophyll? | chloroplasts |
| photosynthesis occurs in chloroplasts, and sugar (glucose) is made | true |
| What are large sacks in plants that contain water and waste material and food gives structure to the cell wall? | vacuoles |
| What shape are plant cells? | square |
| What shape are animal cells? | Round |
| Define magnification. | how much larger a specimen is when using a microscope |
| What uses light and compound lenses, and bends light to make the image look closer? - magnifies up to 2000x | light microscope |
| What uses electrons to produce 3D image of a specimen? | scanning electron microscope |
| What aims beams of light though thin slices of specimen? Thicker pieces appear darker. Magnifies up to 1,000,000x | transmission electron microscope |
| What is the green pigment that absorbs sunlight? | chlorophyll |
| If an organism has hollow mitochondria, how will that affect the cell? | there will not be as much glucose broken down and as much energy (ATP) released. |
| If an organism has hollow mitochondria, what is missing? | cristae |
| why do white blood cells have more lysosomes? | because lysosomes contain the digestive enzymes that break down bacteria |
| when mitochondria are missing cristae they are not able to break down as much __________? | glucose |
| cristae increase what in mitochondria | surface area |
Created by:
rfabish
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