Science 7 - Ecosystems and Energy

Ecosystems and Energy Unit Test

Carbon Cycle

Process of carbon moving between biotic and abiotic factors in an ecosystem.

Abiotic Matter

Nonliving parts of an ecosystem (air, water, rocks)

Biotic Matter

Living parts of an ecosystem (plants, animals)

Carbon Dioxide (CO2)

The gas that humans breathe out.

Glucose (C6 H12 06)

A sugar produced in photosynthesis that stores energy.

Producer

Organism that makes food in the sunlight.

Primary Consumer

Herbivores that eat producers.

Secondary Consumer

Carnivores or omnivores that eat primary consumers.

Tertiary Consumer

A carnivore that eats secondary consumers.

Consumer

An organism that eats other organisms for energy.

Decomposer

Organisms that break down desd matter and recycle nutrients.

Food chain

A sequence ahowing how food/energy flows from one organism to another.

Food web

A more complex network of interconnected food chains.

Energy pyramid

A diagram that shows how energy is transferred and lost at each tropic level.

Photosynthesis

Process which plants use sunlight to produce glucose and oxegyn from CO2 and water.

Chloroplast

Plant cells organelle where photosynthesis occurs

Cellular Respiration

The process where cells break down glucose to release ATP.

Mitochondria

Cell organelles where cellular respiration takes place.

ATP

Energy molecule produced during cellular respiration.

Ecosystem

Lots of interacting organisms and their physical environment

Trophic Level

Position an organism occupies in a food chain.

Nutrient Cycle

Movement of essential elements