Lesson 01 - What Is Life?

What Is Life ?
What Are the Characteristics of All Living Things ?
All ____________________ , or living things , share ____________________ important characteristics . All living things have a ____________________ organization , contain similar ____________________ , use ____________________ , respond to their ____________________ , grow and develop . and ____________________ . All organisms are made up of ____________________ . A cell is the basic unit of ____________________ and function in an organism . ____________________ - celled organisms , like bacteria , are ____________________ organisms . Organisms composed of many cells are ____________________ . The chemicals in cells include water , ____________________ , proteins , and ____________________ . Nucleic acids are the ____________________ material of cells . The combination of reactions that ____________________ down and build up materials to provide a cell with energy is ____________________ . A change in an organism's ____________________ that causes the organism to react is called a ____________________ . An organism ____________________ to a stimulus with an ____________________ or change in behavior called a ____________________ . Development is the ____________________ of change that occurs during an organism's life to produce a more ____________________ organism . ____________________ reproduction involves only one parent and produces offspring that are ____________________ to the parent . Sexual reproduction involves ____________________ parents and combines their genetic material to produce a ____________________ organism that differs from both ____________________ .
Where Do Living Things Come From ?
Living things ____________________ from other living things through ____________________ . The idea that living things could arise from ____________________ things , or spontaneous generation , was proved incorrect by the ____________________ experiments of Francesca Redi and Louis Pasteur , which were series of ____________________ tests in which only one factor was a variable .
What Do Living Things Need to Survive ?
Regardless of ____________________ , all living things have the same basic ____________________ . All living things must satisfy their basic needs for ____________________ , water , living space . and stable ____________________ conditions . Organisms that make their own food are called ____________________ . Organisms that cannot make their own food are called ____________________ . Heterotrophs eat ____________________ or other heterotrophs . The maintenance of stable internal conditions is called ____________________ . Homeostasis is ____________________ to proper cell functioning .