Ecosystem chapter 2

Question 1

Denitrification

Answer 1

The process where nitrates are converted into nitrogen gas

Question 2

Nitrifying bacteria

Answer 2

Certain bacteria that converts ammonium into nitrite or nitrite into nitrate

Question 3

Nitrate

Answer 3

NO3-

Question 4

Nitrogen uptake.

Answer 4

The process where nitrates enter plant root

Question 5

Nitrification

Answer 5

The process of making nitrates

Question 6

Ammonium

Answer 6

NH4+

Question 7

Denitrifying bacteria

Answer 7

Certain bacteria that convert nitrate back into nitrogen gas

Question 8

Nitrite

Answer 8

NO2-

Question 9

Nitrogen-fixing bacteria

Answer 9

Provide nitrogen for the host plant and in return obtain sugars

Question 10

Nitrogen fixation

Answer 10

Nitrogen gas is converted into nitrate using lightning

Question 11

Bioaccumlation

Answer 11

The gradual build up of chemicals in living organisms

Question 12

Biomagnification

Answer 12

Process in which chemicals not only accumulate, but became more concentrated at each trophic level.

Question 13

Keystone species

Answer 13

Species that greatly affect the population number and the health of an ecosystem

Question 14

Heavy metals

Answer 14

Lead, cadmium, mercury

Question 15

Whats the largest longterm nutrient store?

Answer 15

Sedimentation

Question 16

How is carbon cycles through the ecosystem?

Answer 16

Photosynthesis, cellular respiration, decomposition, ocean process, and eruptions and fires

Question 17

What are the five chemical elements required for life

Answer 17

CHONP

Carbon, hydrogen, oxygen, nitrogen, and phosphorous.