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Cells Notes
Notes on cells
| Question | Answer |
|---|---|
| All living organisms on Earth are made up of microscopic structures called | cells |
| Cells consist of smaller pieces, called | organelles |
| Organelles are like the ____ of a cell | organs |
| Cell membrane, cell wall, cytoplasm, vacuole, mitochondrion, endoplasmic reticulum, nucleus and chloroplast are examples of | organelles |
| a suspension fluid that houses the other organelles | Cytoplasm |
| acts as a boundary layer around the cytoplasm thus separating cells from their outside environments | cell membrane |
| a secretion of the cell membrane; it provides protection from physical injury, and with the vacuole, it provides structural support | cell wall |
| stores water and ingested food in a fluid sack | vacuole |
| contain enzymes specialized to break down ingested materials, secretions, and wastes. | lysosomes |
| like the “brain” of the cell | nucleus |
| is composed of long, thin strands of DNA which contains “instructions” that control cell metabolism and heredity | chromatin |
| are RNA and protein complexes that are found in all cells. | Ribosomes |
| acts like a power plant for the cell. | Mitochondria |
| are the food producers in a plant cell | Chloroplasts |
| Many organic and inorganic substances dissolved in cells allow | chemical reactions |
| organic food molecules, such as proteins and starches, must initially be broken down, or digested, into amino acids and simple sugars, respectively. | Large |
| and animal cells contain different cellular structures | Plant cells |
| made of cellulose and surrounds the cell | cell wall |
| Acts as the storage area for cells | vacuoles |
| The lowest level of organization is the | Cell |
| make up the second level of organization | tissues |
| Examples of specific kinds of tissue are | muscle tissue, nervous tissue, and epithelial tissue |
| muscle tissue can | produce force and cause motion |
| nervous tissue | forms the brain and central nerves of an organism |
| epithelial tissue | covers the surfaces and inner linings of an organism |
| An organ is | a group of tissues that work together to perform a specific function |
| Organ systems | are the fourth, and highest, level of organization |
Created by:
amandahase
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