Definitions and how things work

Question 1

Definition of nitrogen-fixation

Answer 1

When bacteria take atmospheric nitrogen and change it into a form that plants can use it.

Question 2

Definition of nitrification

Answer 2

bacteria take ammonium and change it into nitrates

Question 3

Definition of denitrification

Answer 3

bacteria takes the nitrates and puts it back into the atmosphere as nitrogen gas

Question 4

Inputs of photosynthesis

Answer 4

sunlight (energy), carbon dioxide, water

Question 5

outputs of photosynthesis

Answer 5

oxygen and glucose

Question 6

inputs of cellular respiration

Answer 6

oxygen and glucose

Question 7

outputs of cellular respiration

Answer 7

energy, carbon dioxide, and water

Question 8

what types of organisms perform photosynthesis and cellular respiration

Answer 8

organisms that perform both photosynthesis and cellular respiration are plant cells and some bacteria and algae

Question 9

How humans affect the carbon and nitrogen cycles

Answer 9

Greenhouse gasses constantly change the amount of carbon in our atmosphere, which in turn changes the carbon cycle. The overuse of fertilizers can make the amount of nitrogen in the soil unbalanced.

Question 10

How BTB (a pH indicator) works

Answer 10

When there is an acidic pH in the water the BTB is protonated and turns yellow. When there is more carbon in the water, the water turns yellow. When the pH levels are normal the BTB deprotonates and turns blue.

Question 11

True or False:
Denitrification is when bacteria take atmospheric nitrogen and change it into a form that plants can use it.

Answer 11

false; denitrification is when bacteria takes the nitrates and puts it back into the atmosphere as nitrogen gas

Question 12

True or False:
nitrification is when bacteria takes ammonium and changes it into nitrates

Answer 12

true

Question 13

True or False:
greenhouse gasses and the burning of fossil fuels regularly affects the carbon amount in our atmosphere

Answer 13

true