11.2 sg Flashcards
What is nitrogen fixation?
The process of converting atmospheric nitrogen (N2) into a form usable by living organisms, typically ammonia (NH3).
True or False: Nitrification is the process of converting ammonia into nitrate.
True.
Fill in the blank: The primary organisms responsible for nitrogen fixation are __________.
diazotropic bacteria.
What are the two main steps involved in nitrification?
The conversion of ammonia to nitrite (NO2-) and then nitrite to nitrate (NO3-).
What is the role of denitrification in the nitrogen cycle?
It converts nitrates back into atmospheric nitrogen (N2), completing the nitrogen cycle.
Multiple Choice: Which of the following is a byproduct of photosynthesis? A) Oxygen B) Carbon Dioxide C) Nitrogen D) Ammonia
A) Oxygen.
What is the chemical equation for photosynthesis?
6CO2 + 6H2O -> C6H12O6 + 6O2.
True or False: Cellular respiration occurs in all living organisms.
True.
Fill in the blank: The process of cellular respiration converts glucose into __________.
ATP.
What are the three main stages of cellular respiration?
Glycolysis, Krebs cycle (Citric Acid Cycle), and Electron Transport Chain.
Multiple Choice: Which molecule is the primary energy carrier in cells? A) DNA B) ATP C) RNA D) NADH
B) ATP.
What is the significance of the light-dependent reactions of photosynthesis?
They convert solar energy into chemical energy in the form of ATP and NADPH.
True or False: Denitrification primarily occurs in aerobic conditions.
False.
What is the end product of denitrification?
Nitrogen gas (N2).
Fill in the blank: Nitrifying bacteria are essential for converting __________ into a form that plants can absorb.
ammonia.
