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life science reviewC
life science
| Question | Answer |
|---|---|
| what is a cell? | A cell is the smallest unit that can perform all life processes; cells are covered by a cell membrane and have DNA and cytoplasm |
| what is a stimulus? | anything that causes a reaction or change in an organism or any part of an organism |
| what is homeostasis? | The maintenance of a constant internal state in a changing environment |
| what is sexual reproduction? | Reproduction in which the sex cells from two parents unite, producing an offspring that shares traits from both parents |
| what is asexual reproduction? | Reproduction that does not involve the union of sex cells and in which one parent produces offspring identical to itself |
| what is heredity? | The passing of genetic traits from one parent to offspring |
| what is a producer? | A producer is an organism that can make food from its surroundings |
| what is a consumer? | a consumer is an organism that eats other organisms or organic matter |
| what is a decomposer? | An organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or adsorbing the nutrients |
| what is a protein? | A molecule that is made up of amino acids and that is needed to build and repair body structures and to regulate processes in the body |
| what is a carbohydrate? | A class of energy giving nutrients that includes sugars, starches, and fiber; contains carbon, hydrogen and oxygen |
| what is a lipid? | A lipid is a type of biochemical that does not dissolve in water; fats and steroids are lipids |
| what is a phospholipid? | a lipid that contains phosphorus and that is a structural component in cell membranes |
| what is the ATP? | Adenosine trophosphate, a molecule that acts as the main energy source for cell processes |
| what is a nucleic acid? | A molecule made up of subunits called nucleotides |
| what are the necessities of life? | water, air, food, and a place to live |
| if it is cold out how would your body respond? | your body would respond by shivering |
| if it is too warm how might your body respond? | your body might respond by sweating |
| what are the 6 characteristics of living things? | living things have cells, living things sense and respond to change,living things reproduce, living things have DNA, living things use energy, and living things grow and develop |
| a polar bear reproduces by ________ | sexual reproduction |
| most singled celled organisms produce by _____ | asexual reproduction |
| what are simple carbohydrates? | one sugar molecule or a few sugar molecules linked together |
| complex carbohydrates are? | hundreds of sugar molecules linked together |
| proteins are used to make? | spider webs, hair, horns, and feathers |
| how does a phospholipid make a cell membrane? | the head of the phospholipid is attracted to water but the rail is not this creates a natural barrier around the cell wall |
| what is another name for a nucleic acid? | nucleotides |
| what are enzymes? | proteins that start or speed up chemical processes |
| what is a molecule? | a molecule is a substance created when two or more atoms combine |
| what are compounds? | compounds are made up of different kinds of atoms |
| what does the protein hemoglobin do? | it binds oxygen to deliver and release oxygen throughout the body |
Created by:
chealy
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