Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Ch. 2 Life Science
Chapter 2 "It's Alive! Or is it?" review created by Grace D.
| Question | Answer |
|---|---|
| What is the major energy-carrying molecule in the cell? | ATP |
| What percentage of the human body is water? | 70% |
| What is the smallest unit of life? | the cell |
| Anything in the environment that causes a reaction or change in an organism is called a __________. | stimulus |
| The maintenance of a constant internal state in a changing environment | homeostasis |
| What are the four basic needs of every organism? | water, air, food, and a place to live |
| These perform all life processes, are covered by a membrane, and have DNA and cytoplasm | cells |
| chemicals, gravity, light, sounds, and hunger | stimuli |
| An organism that eats other organisms or organic matter | consumer |
| The passing of traits from parents to offspring is called _______. | heredity |
| What does DNA do? | It controls the structure and function of cells. |
| As living things grow, they get larger. They may also _________. | develop and change |
| Most of the chemical reactions involved in metabolism require _________. | water |
| A class of energy-giving nutrients that includes sugars, starches, and fiber; contains carbon, hydrogen, and oxygen | carbohydrate |
| A molecule made up of subunits called nucleotides that store information | nucleic acid |
| A lipid that contains phosphorous and is a structural component in cell membranes | phospholipid |
| Compounds that make up proteins | amino acids |
| The sum of all chemical processes that occur in an organism | metabolism |
| An organism that gets energy by breaking down thre remains of dead organisms or animal wastes and consuming or absorbing the nutrients | decomposer |
| A molecule made up of amino acids that is needed to build and repair body structures and to regulate processes in the body | protein |
| Reproduction in which one parents produces offspring identical to itself is called _________ __________. This does not involve the union of sex cells. | asexual reproduction |
| A type of biochemical that does not dissolve in water is called a ________. | lipid |
| This is an organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or absorbing the nutrients. | decomposer |
| Reproduction in which the sex cells from two parents unite, producing offspring that share traits from both parents is called __________ ____________. | sexual reproduction |
| An organism that can make its own food by using energy from its surroundings | producer |
| Name the six characteristics of living things. | Livings things have cells, sense and respond to change, reproduce, have DNA, use energy, and grow and develop. |
| What is an example if a simple carbohydrate and an example of a complex carbohydrate? | A simple carbohydrate can be table sugar and sugar in fruits. A complex carbohydrate can be potato starch. |
| What is one difference between oil and fats? | At room temperature, most oils are liquid and most fats are solid. |
| When organisms reproduce, what do they pass on to their offspring? | copies of their DNA |
| What is the difference between growth and development? | Growth is a change in size and development is a change in form. |
| Name the six elements that are key to life. | carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur |
Created by:
grace.d.33
Popular Biology sets