Ch. 4 and 5
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is the smallest unit that can perform all life processes | cell
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| What is anything that causes a reaction or change in an organism or any part of an organism | stimulus
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| the maintenance of a constant internal state in a changing enviroment | homeostasis
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| sexual reproduction | reproduction in which the sex cells from two parent organisms unite, producing offspring that share traits from both parents
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| asexual reproduction | reproduction that does not involve the union of sex cells and i whuch one parent produces ooffspring identical to itself
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| What is the passing of genetic traits fom parent to offspring | heredity
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| metabolism | the sum of all chemical processes that occur in an organism
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| producer | an organism that can make its own food by using the energy from its surroundings
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| consumer | an organism that eats other organisms or organic matter
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| decomposer | an organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or absorbing the nutrients
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| proteins | molecule that is made up of amino acids and h is need to build and reapair body structres and to regulate processes in the body
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| carbohydrate | class of energy giving nutrients that includes sugars, starches and fiber; contains carbon, hydrogen and oxygen
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| lipid | type of biochemical that does not dissolve in water; fats and oils are lipids
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| phospholipid | lipid that contains phosphorus and that is a structural component in cell membranes
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| ATP | molecule that acts as the main energy source for cell processes
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| nucleic acid | a molecule made up of subunits called nucleotides
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| True or False: All living things are made up of cells | True
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| Organisms must have food because | food is a source of energy
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| Organisms strore energy in | lipids
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| The subunits of nucleic acids are | nucleotides
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| The sub units of proteins are | amino acids
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| proteins that start or speed up chemical reactions in cells are | enzymes
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| Why do all living things need air? | Becuase the need the gases in the air to perform chemical processesthat realease energy from food.
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| What covers a cell? | a membrane
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| What does a cell contain? | All materials necessary for life
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| Why does an organism have to maintain stable internal conditions? | because if they dont they will die
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| When you shiver or sweat your body is | trying to maintain a stable internal condition
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| Most single cell organisms reproduce thorugh | asexual reproduction
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| Most animal and plants reproduce through | sexual reproduction
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| What does DNA do? | controls and structure and function of cells
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| What do organisms pass on to their offspring? | copies of their DNA
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| How does a single celled organism grow? | it grows by getting larger then it divides
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| In addition to getting larger, living things also | develope and change
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| What are four basic needs of every organism? | water, air, a place to live and food
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| Cells of most living things are made of approximatelly, how much water? | 70%
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| Most chemical reactions involved in metabolism require | water
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| About how long can a human survive without water? | 3 days
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| Air is a mixture of gases including, oxygen and | carbon dioxide
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| What is a chemical process in which most living thing require oxygen? | releasing energy from food
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| Green organisms convert energy from sunlight to energy stored in food during | photosynthesis
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| What do organisms need in the place where they live? | All the things they need to survive
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| What are 2 things food gives organisms? | energy and raw materials need to carry on life processes
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| 2 ways organisms use nutrients from food are | to replace cells and build body parts
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| nutrients are made up of | molecules
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| molecules made up of different kind of atoms are | compounds
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| cells use carbohydrates as | a source of energy and for energy storage
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| carbohydrates made of one sugar molecule or a few linked sugar molecules are called | simple carbohydrates
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| a carbohhydarte made of hundreds of molecules linked together are | complex carbohydrates
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Created by:
areed1
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