| A | B |
|---|
| cell | smallest structure that carries out the activities necessary for life |
| structures | Cells have ____ that perform certain functions. |
| survive | In order for an organism to ____, all structures must function properly and work together. |
| in common | Plant cells and animal cells have at least three structures ____. |
| cell membrane | outer covering of the cell |
| materials | The cell membrane contains the cell's ____. |
| support | The cell membrane provides ___. |
| water, gases and nutrients | ___ enter the cell through the cell membrane. |
| wastes | ____ leave the cell through the cell membrane. |
| nucleus | cell structure that directs cell activities and carries genetic information |
| control center | The nucleus is the ____ for the cell. |
| reproduction | The nucleus carries information for cell ____. |
| cytoplasm | gel-like material that surrounds the internal parts of a cell |
| internal | Cytoplasm is the gel-like material that surrounds the internal/external parts of a cell. |
| contains the nucleus | cytoplasm |
| cell membrane, nucleus, cytoplasm | three structures that plant and animal cells have in common |
| organelle | structure that has a specific job within a cell |
| mitochondria, vacuoles, endoplasmic reticulum, Golgi bodies, ribosomes, and lysosomes | examples of organelles |
| mitochondria | break down sugars and release the energy that cells need to carry out their function |
| rod shaped | mitochondria |
| vacuoles | store food, water or waste of the cell |
| endoplasmic reticulum | carries proteins and other materials from one part of a cell to another |
| passageways | Endoplasmic reticulum looks like a maze of ____. |
| Golgi bodies | ____ receive proteins and other materials from the endoplasmic reticulum, "package" them, and distribute them to other parts of the cell. |
| ribosomes | produce proteins |
| lysosomes | contain chemicals that break down large food particles or old cell parts |
| ER | Endoplasmic reticulum |
| plant | Animal/plant cell has chloroplast. |
| chloroplast | organelle that makes food from sunlight, water, and carbon dioxide |
| animal | Plant/animal cell does not have a cell wall. |
| passive transport | Cells do not use energy to move substances across a cell membrane. |
| diffusion | process that spreads substances through a gas or liquid |
| osmosis | type of diffusion that allows water to pass but not the solutes in the water |
| water | In osmosis only ___ moves across the cell membrane. |
| active transport | Cells use energy to move substances across a cell membrane from regions of lower concentration to regions of higher concentratioin. |
| energy | All living things need ___ to survive. |
| photosynthesis | the process in which plants use energy from the Sun to change carbon dioxide and water into sugar and oxygen. |
| Photosynthesis takes place in ___. | chloroplasts |
| chlorophyll | green pigment that captures energy from sunlight |
| glucose | one of the high-enery compounds classified as sugars |
| cellular respiration | reverse process of photosynthesis |
| cell division | process by which cells copy themselves |
| replace old cells and grow | Cell division allows an organism to _____. |
