mod 3: matter and energy in ecosystems

Question 1

ecosystem

Answer 1

All the living things and nonliving things in a given area

Question 2

photosynthesis

Answer 2

A series of chemical reactions that convert light energy, water, and carbon dioxide into the food-energy molecule glucose and give off oxygen

Question 3

Cellular respiration

Answer 3

A series of chemical reactions that convert the energy in food molecules into a usable form of energy called ATP

Question 4

glycolysis

Answer 4

A process by which glucose, a sugar, is broken down into smaller molecules

Question 5

producer

Answer 5

An organism that uses an outside energy source, such as the Sun, and produces its own food

Question 6

consumer

Answer 6

An organism that cannot make its own food and gets energy by eating other organisms

Question 7

detritivore

Answer 7

An organism that consumes the bodies of dead organisms and wastes produced by living organisms

Question 8

food chain

Answer 8

A model that shows how energy flows in an ecosystem through feeding relationships

Question 9

food web

Answer 9

A model of energy transfer that can show how the food chains in a community are interconnected

Question 10

energy pyramid

Answer 10

A model that shows the amount of energy available in each link of a food chain

Question 11

evaporation

Answer 11

The process of a liquid changing to a gas at the surface of the liquid

Question 12

condensation

Answer 12

The process by which a gas changes into a liquid

Question 13

precipitation

Answer 13

Water, in liquid or solid form, that falls from the atmosphere

Question 14

nitrogen fixation

Answer 14

The process that changes atmospheric nitrogen into nitrogen compounds that are usable by living things