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Firamture studystack
cells
| Question | Answer |
|---|---|
| the smallest unit that can perform all life processes | cell |
| anything that causes a reaction or change in an organism or any part of the organism | stimulus |
| the maintenance of a constant internal state in a changing environment | homeostasis |
| reproduction in which the sex cells from two parents unite, producing offspring share traits form both parents | sexual reproduction |
| reproduction that does not involve the union of sex cells and in which one parent produces offspring identical to itself | asexual reproduction |
| the passing of genetic traits form parent to offspring | heredity |
| the sum of all chemical processes that occur in an organism | metabolism |
| an organism that can make its own food by using energy form it surroundings | producer |
| an organism that eats other organisms or organic matter | consumer |
| an organism that gets energy by breaking down the remains of a dead organisms or animal wastes and consuming or absorbing the nutrients | decomposer |
| a molecule that is made up of amino acids and that is needed to build and repair body structures and regulate processes in the body | protein |
| a class of energy-giving nutrients that includes sugars, starches, and fibers; contains carbon, hydrogen,and oxygen | carbohydrates |
| a type of biochemical that does not dissolve in water; fats and steroids are lipids | lipid |
| a lipid that contains phosphorus and that is a structural component in cell membranes | phospholipid |
| adenosine triphosphate, a molecule that acts as the main energy source for all processes | ATP |
| a molecule made of subunits called nucleotides | nucleic acids |
| Why must organisms have food? | food is a source of energy |
| What are the characteristics of living things? | -made of cells -sense and respond to change -reproduce -have DNA -use energy -grow and develop |
| What are the four most important things an organism needs to live? | air, water, food, and a place to live |
| What are the two different types of carbohydrates? | simple carbohydrates and complex carbohydrates |
| What the key elements in life? | carbon, hydrogen, nitrogen, oxygen, phosphorous, and sulfur |
| Lipids cannot mix with what? | water |
| What does growth and develop involve? | Growth-size Development-form |
| What percentage of water are most living things? | 70% |
| About how long can humans live without water? | 3 days |
| What is a chemical process in which most living things use oxygen? | releasing energy from food |
| What do organisms need in a place to live? | all the things that are needed to survive |
| What are two things that food gives organisms? | energy and the raw materials needed to carry on life processes |
| What are two ways organisms use nutrients in food? | replace cells and build body parts |
| What are the five chemical building blocks of cells? | protein, carbohydrates, lipids, ATP, and nucleic acids |
| What are the compounds that make up proteins? | amino acids |
| How do cells use carbohydrates? | source of energy and for energy storage |
| What are the molecules that for much of the cell membrane? | phospholipids |
| Why are nucleic acids called the blueprints of life? | they have all the information needed for a cell to make proteins |
| What covers a cell? | a membrane |
| What does a cell contain? | all the material necessary for life |
| What does DNA do? | controls the structure and functions of cells |
| What are three examples of activities of life carried out by all organisms? | making food, breaking down food, and building cells |
| How do single-celled organisms grow? | the cell gets larger and divides |
| How do organisms with many cells grow? | the number of cells gets larger |
Created by:
cfirmature
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