MULTIPLE-CHOICE QUESTIONS
- Which of the following is NOT a primary depository for the element listed?
(A) Carbon—coal
(B) Nitrogen—nitrogen gas in the atmosphere
(C) Phosphorus—marble and limestone
(D) Sulfur—deep ocean deposits
(E) All of the above are correct.
- Burning fossil fuels coupled with deforestation increases the amount of
_____ in the atmosphere.
(A) NO 2
(B) CO 2
(C) SO 2
(D) O 3
(E) All of the above are correct.
- In the nitrogen fixation cycle, cyanobacteria in the soil and water and
Rhizobium bacteria in root systems are responsible for converting (A)
organic material to ammonia and ammonium ions
(B) ammonia, ammonium ions, and nitrate ions to DNA, amino acids, and
proteins (C) ammonia and nitrite ions to nitrate ions
(D) nitrogen and hydrogen gas to ammonia
(E) ammonia to nitrite and nitrate ions
- The cycle listed that has the most immediate effect on acid precipitation
would be the (A) carbon cycle
(B) sulfur cycle
(C) water cycle
(D) phosphorous cycle
(E) rock cycle
- Nitrogen is assimilated in plants in what form?
(A) Nitrite, NO 2 – (B) Ammonia, NH 3
(C) Ammonium, NH 4 +
