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Chapter 4-5
vocab words
| Question | Answer |
|---|---|
| What is the basic unit of life? | cells |
| What theory forms the basic framework in which biologists have tried to understand living things ever since? | cell theory |
| This regulates what enters and leaves the cell and also aids in the protection and support of a cell. What is it? | cell membrane |
| This surrounds the cell membrane. It helps protect and support the cell. What is it? | cell wall |
| Organisms in which there cells lack nuclei. what is it? | Prokaryotes |
| Organisms whose cells contain nuclei. What is it? | Eukaryotes |
| 2 membranes that surround the nucleus, they form a boundary around the nucleus | nuclear envelope |
| Made up of RNA and proteins | Nucleolus |
| These contain genetic information that must be passed to each new generation of cells | chromosomes |
| Area between the nucleus and cell membrane | cytoplasm |
| a tiny structure that performs a specialized function in the cell | organelles |
| Change the chemical energy stored in food into compounds that are more convenient for the cell use | mitochondrion |
| trap the energy of sunlight and covert it into chemical energy | chloroplasts |
| structures in which proteins are made | Ribosomes |
| transports materials through the inside of the cell | endoplasmic reticulum |
| A special compartment that holds protein, looks like a stacked pile of membranes piled on top of one another | Golgi apparatus |
| small membrane-bordered structures that contain chemicals and enzymes necessary for digesting certain materials in the cell. | lysosomes |
| saclike structures that store water, salts, proteins, and carbohydrates | vaculoes |
| plant organelles that may take many forms, are also involved in the storage of food and pigments | plastids |
| composed of a variety of filaments and fibers that support cell structure and drive cell movement | cytoskeleton |
| STOP FOR QUIZ | STOP FOR QUIZ |
| process by which molecules of a substance move from areas of higher concentration of that substance to areas of lower concentration | diffusion |
| The diffusion of water molecules through a selectively permeable membrane | osmosis |
| the transportation of molecules across the membrane in the direction of the lowest concentration by a carrier protein | facilitated diffusion |
| an energy requiring process that enables materials to move across a cell membrane against a concentration difference | active transport |
| when cells that are formed to do a special job | cell specialization |
| a group of tissues that work together to form a special function | organ |
| a group of organs working together to perform a certain function | organ system |
Created by:
knovak2014
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