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cell bio unit exam
cell test
| Question | Answer |
|---|---|
| the life function of transport in an organism directly involves those activities used to | absorb and distribute materials |
| nutrition involves those activities by which organisms | obtain and process materials needed for other activities |
| a statement best describes cellular respiration | it converts energy in food into amore usable form |
| what term is defined as all the chemicals reactions that are required to sustain life | metabolism |
| in what process are simple materials chemically combined to form more complex materials | synthesis |
| when a person does strenuous exercise, small blood vessels (capillaries) near the surface of the skin increase in diameter. this change allows the body to be cooled. these statements best illustrate | homeostasis |
| as a result of their metabolic activities, many organisms produce harmful substances these substances are eliminated by the process of | excretion |
| the life function responsible for the coordination and control of all life activities in an organism is known as | regulation |
| what life activity is not required for the survival of an individual organism | reproduction |
| which sequence of terms is in the correct order from simplest to most complex | cells->tissues->organs->organ systems |
| what organism is considered an exception to the cell theory because it has a noncellular structure | virus |
| the cell theory states that | all living organisms are composed of cells that arise from preexisting cells |
| what instrument was used in the 18th and 19th centuries and helped scientists develop the cell theory | light microscope |
| the largest amount of DNA in a plant cell is contained in | a nucleus |
| in a cell, information that controls the production of proteins must pass from the nucleus to the | riboosomes |
| one difference between plant and animal cells is that animal cells do not have | chloroplasts |
| transport of molecules within animal cells is assisted by a system of internal membrane that makeup the | endoplasmic reticulum |
| what organelle is correctly paired with its function | chloroplast- serves as a site for photosynthesis |
| microscopic examination of an animal cell reveals the presence of a plasma membrane but no cell wall what additional tructures would normally be present within this cell. | centrioles |
| a structure involved in regulating the movement of materials into a cell is the | cell membrane |
| a sentence that represents a hypoythesis | environmental conditions affect germination |
| what statement describes the best procedure to determine if a vaccine for a disease in a certain bird species is effective | vaccinate 50 birds,do not vaccinate other 50 birds and expose all 100 to the disease |
| how does the control setup in an experiment differ from the other setups in the same experiment | it differs in the one variable being tested |
| how does the control setup in an experiment | it differs in the one variable being tested |
Created by:
jloft