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Life Science Ch. 3
Chapter 3: Chemistry of Living Things
| Question | Answer |
|---|---|
| The passage of large molecules through the cell membrane into the cell is called ____________. | Endocytosis |
| Active transport always requires ____________. | Energy |
| The movement of molecules from an area where there are many to where there are few is called ____________. | Diffusion |
| (T/F) The nucleus of an atom contains protons and electrons | F |
| (T/F) A proton is a particle with a positive charge | T |
| (T/F) An element can be broken down into simpler forms | F |
| (T/F) When an atom loses electrons, it is negatively charged | F |
| (T/F) Substances in a mixture lose their original properties | F |
| (T/F) All living things contain carbon | T |
| (T/F) Proteins are made up of amino acids | T |
| (T/F) Lipids store and release large amounts of energy | T |
| (T/F) The cell uses energy to transport glucose (sugar) through the cell membrane | T |
| (T/F) Proteins are transported by the Golgi Bodies | T |
| (T/F) Diffusion is a type of active transport | F |
| (T/F) Osmosis is a type of passive transport involving elements such as calcium | F |
| (T/F) Random movement of molecules stops once equilibrium is reached | T |
| (T/F) Molecules tend to move into areas where there are more molecules | F |
| Plants get their energy from the ______________ | Sun |
| The green pigment in plants is called ______________ | Chlorophyll |
| Organisms that can make their own food are called ______________ | Producers |
| A food chain always begins with a ______________ | Producer |
| The process by which plants change light energy into chemical energy is called ______________ | Photosynthesis |
| All the chemical changes that occur withing the cells of an organism is called ______________ | Metabolism |
| During fermentation, Carbon dioxide and ______________ are produced | Lactic Acid |
| Overworked muscles can still release energy when oxygen levels are low by the process of ______________ | Fermentation |
| The metabolism of glucose when oxygen is present is called ______________ | Cellular Respiration |
| ______________ obtain energy by eating producers or other individuals like them | Consumers |
| Energy is released in the absence of oxygen... | Fermentation |
| Energy source necessary for photosynthesis... | Sunlight |
| Causes muscles to be sore... | Lactic Acid |
| Made and stored by plants... | Glucose |
| Obtain energy from producers... | Consumers |
| Energy can be lost in this form... | Heat |
| Contain green pigment... | Chloroplasts |
| Place where glucose is metabolized... | Mitochondria |
| Combines with glucose during respiration... | Oxygen |
| Fermentation product in yeast... | Alcohol |
| Waste products in respiration... | Carbon Dioxide and Water |
| Organic Material from plants or animals that is used for energy is called... | Biomass |
| The chemical energy found in biomass can be traced back to the ___________ energy from the sun | Radiant |
| Biomass fuel can be solid, liquid, or ___________ | Gas |
| Microorganisms convert sugar in sugar cane, corn and grain into ethanol in the process called ___________ | Fermentation |
| Micture of gasoline and ethanol is called ___________ | Gasohol |
| Wood alcohol, or ___________ , can be used as a fuel for automobiles | Methanol |
| "Biogas" that is burned, produces fewer ___________ than either coal or biomass | Pollutants |
| Removing crop and forestry wastes may reduce ___________ | Soil nutrients |
| Total of all activities of an organism... | Metabolism |
| Organisms that can make their own food... | Producers |
| Organic material from plants or animals that is used as fuel... | Biomass |
| Mixture of gases that can be stored and transported like natural gas... | Biogas |
| Speed up chemical reactions in cells... | Enzymes |
| Compound that contains carbon... | Organic Compound |
| Movement of molecules without the use of energy... | Passive Transport |
| Movement of molecules from an area of high concentration to an area of low concentration... | Diffusion |
| Passive transport of water... | Osmosis |
| Mixture of gasoline and alcohol... | Gasohol |
| An atom's nucleus contains.... | Protons and Neutrons |
| Bacteria are taken into cells by ________ | Endocytosis |
| A chemical formula shows the kind and number of atoms that form a ____________ | Compound |
| Organic compounds in the chromosomes are... | Nucleic Acids |
| In a(n) ______ substances mix evenly with other substances | Solution |
| Organic compounds are compounds that contain ___________ | Carbon |
| __________ are organic compounds that make sugar molecules join together | Carbohydrates |
| __________ are organic compounds that store energy | Lipids |
| The function of the semipermeable cell ______ is to allow some things to pass through and not others | Membrane |
| The movement of large particles through the cell membrane and out of the cell is called ________________ | Exocytosis |
| Producers use light energy to make ___________ | Glucose |
| ____________ is a process that releases energy when oxygen is available only in very low amounts | Fermentation |
| Particle with a negative charge | Electron |
| Particle with a positive charge | Proton |
| Particle with NO charge | Neutron |
| The nucleus of an atom, over all, carries a __________ charge | Positive |
| The atom,. overall, carries a __________ charge | Neutral |
| A salt and water mixture is an example of a(n)... | Solution |
| Blood is an example of a(n)... | Suspension |
| Dispersal of an air freshener throughout a room... | Diffusion |
Created by:
SavannahElkins
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