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chapter1-cell test
parts of a cell
| Question | Answer |
|---|---|
| _____ are bodies within the nucleus made of RNA and protein. | nucleolus |
| _____ are membrane bound structures containing digestive enzymes which prevents the cell from digesting itself. | lysosomes |
| the more active a cell is the more _____ it will have. | mitochondria |
| which layer of the cell membrane gives elasticity to the cell? | middle protein layer |
| _____ are elongated structures bearing DNA and pass traits. | chromosome |
| _____ are structures that make or store food in plants. | plastids |
| the _____ _____ enables the nucleus to maintain an environment different from the rest of the cell. | nuclear membrane |
| _____ is a structure which holds a pair of chromatids together. | centromere |
| _____ are structures where oxygen is required to produce energy for the cell. | mitochondria |
| what are proteins and why are they vital to a cell? | nutrientts in all living things use for cell growth and repair |
| _____ _____ are organelles that deliver substances released by the er of the cell and where carbohydrates synthesis occurs. | golgi body |
| _____ _____ are the building blocks of protein | amino acids |
| _____ are spherical bodies which make proteins for the cell. | ribosomes |
| _____ _____ is a network of membranes functioning in transport of materials within the cell. | endoplasmic recticulum |
| what are 4 substances which ca travel in or out of the cell membrane. | nutrients, water, oxygen, and waste |
| homeostasis in cells: | ability of a cell to maintain stable internal environment as changes occur outside. |
| 2 limitations a cell has if it does not have a nucleus is: | limited lifespan and cannot reproduce |
| difference between cytoplasm and nucleoplasm: | cytoplasm is a fluid material outside the nucleus. nucleoplasm is a fluid material inside the nucleus |
| the cells DNA is located in the _____ or control center of the cell. | nucleus |
| difference between rough and smooth er | rough has ribosomes smooth doesnt have ribosomes |
| _____ are fluid filled bags within the cell used for storage of food or water. | vacuole |
| difference between generalized and specialized cells and give examples of each | generalized: carry out all vital life functions(bacteria) specialized:has specific function(red blood cells) |
| cells must have a slightly _____ pH | neutral |
| 1-6ph is an _____ | acid |
| 8-14ph is a _____ | base |
| 7ph is _____ | neutral |
| what is the role of water in the cytoplasm of the cell? | solvent to dissolve materials |
| difference between prokaryotic and eukaryotic cells | prokaryotic has no nucleus and eukaryotic has a nucleus |
| _____ are the structures in the plastids of plant cells which use energy of light to make sugars during photosynthesis | chloroplasts |
| cell organization in order | cell,tissue,organ,system |
| _____ protein substances in the blood which help the plasma maintain a ph of about 6.8 to 7.8 | buffers |
| 2 substances which make up the layers of the cell membrane | lipid bilayer & phospholipid |
| _____ are the cell structures which help maintain the shape of the cell by acting as a kind of "skeleton" | cytoskeleton |
| selectively permeable means | generally regulates which substances pass in and out of the cell |
| difference between cilia and flagella | cilia: short hair flagella: long hair |
Created by:
megandickinson
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