#Question id: 10355
#Unit 6. System Physiology – Plant
The conversion of ammonium to amino acids requires two enzymes such as GS and GOGAT,
a) High levels of light and carbohydrate—conditions that stimulate plastid GS and Fd-GOGAT
b) Conditions of ample energy inhibit GS and GOGAT
c) The stimulation of GS and GOGAT, they favor nitrogen assimilation into glutamine and glutamate, compounds that are rich in carbon and participate in the synthesis of new plant materials
d) In energy-limited conditions inhibit GS and GOGAT
Which of the following statements about GS and GOGAT is correct?
#Question id: 10358
#Unit 6. System Physiology – Plant
Which of the following essential micronutrients is associated with nitrate reductase enzyme found in higher plants?
#Question id: 10359
#Unit 6. System Physiology – Plant
Nitrate reductases of higher plants are composed of two identical subunits, each containing three prosthetic groups. Which of the following is not the prosthetic group of nitrate reductase;
#Question id: 10362
#Unit 6. System Physiology – Plant
Bacteria can convert atmospheric nitrogen into ammonia,
Several form symbiotic associations with higher plants is given below;
HOST PLANT
N-FIXING SYMBIONTS
A)
Gunnera
i) Frankia
B) Azolla
ii)
Acetobacter
C)
Leguminous
iii) Azospirillum
D) Actinorhizal
iv) Nostoc
E) Sugarcane
v) Anabaena
F) Miscanthus vi) Sinorhizobium
Which of the following combination with the host plants and
n-fixing symbionts is CORRECT?
#Question id: 10368
#Unit 6. System Physiology – Plant
Free-living bacteria that are capable of fixing nitrogen are aerobic, facultative, or anaerobic. Some of the Aerobic nitrogen-fixing bacteria such as
#Question id: 10369
#Unit 6. System Physiology – Plant
Which type of the nitrogen-fixing bacteria are thought to maintain a low oxygen concentration (microaerobic conditions) through their high levels of respiration