#Question id: 11845
#Unit 6. System Physiology – Plant
IAA Is synthesized from__
#Question id: 11844
#Unit 6. System Physiology – Plant
The following statements are made to describe the
biosynthetic pathway of IAA;
a) IPA pathway
involves a deamination reaction to form IPA, followed by a decarboxylation
reaction to form indole-3-acetaldehyde (IAld) and then oxidized to IAA by a
specific dehydrogenase
b) IAN pathway is similar to the IPA pathway, except that
the order of the deamination and decarboxylation reactions is reversed, and
different enzymes are involved
c) IAM pathway involves the two enzymes tryptophan monooxygenase and IAM hydrolase
d) In the IAN pathway, tryptophan is first converted to
indole-3-acetaldoxime and then to indole-3-acetonitrile. The enzyme that
converts IAN to IAA is called nitrilase
Which of the following is the correct statements of about the biosynthesis of IAA?
#Question id: 10255
#Unit 6. System Physiology – Plant
In sucrose synthase combines sucrose with UDP to produce fructose and UDP-glucose in the cytosol. What is the function of UDP-glucose pyrophosphorylase?
#Question id: 10333
#Unit 6. System Physiology – Plant
Four elements, oxygen, carbon, and hydrogen and nitrogen are the major components of most organic compounds, which of the following elements are more abundant in plants ?
#Question id: 10335
#Unit 6. System Physiology – Plant
plants can store high levels of nitrate, and they can translocate it from tissue to tissue without deleterious effect. Yet if livestock or humans consume plant material that is high in nitrate, they may suffer with,
#Question id: 10334
#Unit 6. System Physiology – Plant
N2 combines with hydrogen to form ammonia under elevated temperature (about 200°C) and high pressure (about 200 atmospheres) and in the presence of a metal catalyst (usually iron). The extreme conditions are required to overcome the high activation energy of the reaction. This nitrogen fixation reaction, called