11.2 Nutrient Cycles

Question 1

Nitrogen fixation

Answer 1

bacteria in the soil take atmospheric nitrogen and convert it to ammonia and ammonium

Question 2

Nitrification

Answer 2

bacteria in the soil take ammonia and ammonium and convert them to nitrates and nitrites

Question 3

Denitrification

Answer 3

bacteria in the soil take nitrates and nitrites and convert them to atmospheric nitrogen

Question 4

Photosynthesis

Answer 4

sunlight + water + carbon dioxide -> glucose and oxygen

Question 5

Cellular Respiration

Answer 5

glucose + oxygen -> ATP + water + carbon dioxide

Question 6

How carbon enters and leaves the food chain

Answer 6

enter: photosynthesis
leave: cellular respiration

Question 7

How nitrogen enters and leaves the food chain

Answer 7

enter: nitrogen fixation / nitrification
leave: denitrification

Question 8

How phosphorus enters and leaves the food chain

Answer 8

enter: assimilation
leave: decomposition

Question 9

Where plants get carbon

Answer 9

atmosphere

Question 10

Where plants get nitrogen

Answer 10

soil

Question 11

Where plants get phosphorus

Answer 11

rock / soil

Question 12

What type of organisms perform the process of photosynthesis

Answer 12

producers

Question 13

What type of organisms perform the process cellular respiration

Answer 13

producers and consumers

Question 14

Differentiate between how energy and how carbon flow through a food chain

Answer 14

Matter (carbon in this case) cycles through an ecosystem
Energy flows through an ecosystem, constantly entering and leaving