Microorganisms

Question 1

What are saprobionts?

Answer 1

organisms that hydrolyse waste material and dead organic matter, through extracellular digestion

Question 2

What is extracellular digestion also known as?

Answer 2

Saprobiotic nutrition

Question 3

Describe the role of bacteria in ammonification

Answer 3

produce enzymes that hydrolyse proteins/urea/DNA/RNA in waste material, converting it into ammonium ions. (during extracellular digestion/soprabiotic nutrition)

Question 4

What are the 4 types of microorganism involved in the nitrogen cycle?

Answer 4

• nitrogen fixing bacteria
• nitrifying bacteria
• denitrifying bacteria
• saprobionts

Question 5

What is the plant and fungi complex called?

Answer 5

mycorrhizae

Question 6

What bacteria converts N2 into NH4+?

Answer 6

nitrogen fixing

Question 7

What is the specific name of the bacteria found in root nodules?

Answer 7

rhizobium

Question 8

What do saprobionts break down?

Answer 8

nitrogen-containing compounds SUCH AS DNA/PROTEINS in waste/dead material

Question 9

What is different about denitrifying bacteria?

Answer 9

they require anaerobic conditions to convert NO3 into N2

Question 10

What bacteria are involved in ammonification?

Answer 10

saprobionts

Question 11

What bacteria are involved in nitrification?

Answer 11

nitrifying