Mineral nutrient assimilation

Question 1

nutrient assimilation incorporate nutrients into –

Answer 1

organic substances

Question 2

nitrogen make up – of atmosphere

Answer 2

78%

Question 3

nutrient assimilation among most – reaction

Answer 3

energy requiring

Question 4

acquire nitrogen from atmosphere requires breaking stable triple bond in N2 to produce

Answer 4

ammonia or nitrate

Question 5

plants need to expect – to convert NO3- into glutamine

Answer 5

12 ATP

Question 6

legumes that have symbiotic relationship with nitrogen-fixing bacteria need to expend – to convert fixed N into glutamine

Answer 6

16 ATP

Question 7

– accounts for most conversion of atmospheric N2 into ammonium (NH4+)

Answer 7

biological nitrogen fixation

Question 8

N fixation requires an – environment

Answer 8

anaerobic

Question 9

– irreversibly inactivates nitrogenase

Answer 9

oxygen

Question 10

nodule formation involves special development of root hairs to allow entry of bacteria into the – and its fusion with cell membrane

Answer 10

infection thread

Question 11

infection thread is formed by –

Answer 11

plant vesicles

Question 12

infection thread extends and branches into – where vesicles composed of plant membrane that enclose bacterial cells are released into the cytosol

Answer 12

target cells

Question 13

nodule formation involves many – from released chemicals to attract bacteria to plant to coordination of bacteria and plant cell behavior during nodule formation

Answer 13

coordinated signals

Question 14

plant supplies oxygen to bacteria in a tightly controlled way with –

Answer 14

leghemoglobin