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Chapter 2 Review SRB
Science Studystack
| Question | Answer |
|---|---|
| The smallest unit that can perform all life processes is a ________. | cell |
| Anything that causes a reaction or change in an organism in an organism is a ______. | stimulus |
| ________ is the maintenance of a constant internal state in a changing environment. | Homeostatis |
| Reproduction in which the sex cells from two parents unite, producing offspring that share traits from both parents is called ________ __________. | sexual reproduction |
| Reproduction that does not involve the union of sex cells and in which one parent produces offspring that is identical to itself is called ________ __________. | asexual reproduction |
| _______ is the passing of genetic traits from one generation to the next. | Heredity |
| ________ is the sum of all chemical processes that occur in an organism. | Metabolism |
| An organism that can make its own food by using energy from its surroundings is a ______. | producer |
| An organism that eats other organisms or organic matter is a _______. | consumer |
| A ________ is an organism that gets energy from breaking down the remains of dead organisms or animal wastes and consuming or absorbing that nutrients. | decomposer |
| _______ is 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. | Protein |
| ________ is a class of energy-giving nutrients that includes sugars, starches, and fiber. | Carbohydrate |
| A ______ is a type of biochemical that does not dissolve in water. | lipid |
| A _______ is a lipid that contains phosphorus and that is a strucural component in cell membranes. | phospholipid |
| A molecule that acts as the main energy source for cell processes is _______. | ATP or adenosine triphosphate |
| ______ ______ is a molecule made up of subunits called nucleotides. | Nucleic acid |
| What are the four basic needs of every organism? | Water, air, a place to live, and food |
| Cells of most living things are made of approximately ___% water. | 70% |
| What is a chemical process in which most living things use oxygen? | releasing energy from food |
| Nutrients are made up of ______, a substance created when two or more atoms combine. | molecules |
| What does DNA do? | DNA controls the structure and function of cells |
| Green organisms convert the energy of the sunlight to energy stored in food during______. | photosynthesis |
| What are two ways organisms use nutrients from food? | Nutrients are used to replace cells and build body parts |
| Name the five chemical building bloacks of cells. | Proteins, carbohydrates, lipids, ATP, and nucleic acids |
| Where can an orgainism get energy once it has used up most of its carbohydrates? | An organism can get energy from fats and oils |
| True or false: Lipids mix with water. | False |
| What does a cell contain? | It contains all the materials necessary for life |
| What are the six characteristics of living things? | They have cells, sense and respond to change, reproduce, use energy, grow and develop, and have DNA |
| Why are nucleic acids called the blueprints of life? | They are called the blueprints of life because they have all the information needed for a cell to make proteins |
| The subunits of nucleic acids are ______. | nucleotides |
Created by:
artmullin1997
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