#Question id: 4620
#Unit 11. Evolution and Behavior
The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. Which of the following is the most likely explanation for these data?
#Question id: 11828
#Unit 6. System Physiology – Plant
Given some enzymes of ethylene biosynthetic pathway and its
character;
A) ACC
synthase i)
It is an unstable, cytosolic enzyme. Its level is regulated by environmental
and internal factors, such as wounding, drought stress, flooding, and auxin
B) ACC
oxidase ii)
It catalyzes the last step in ethylene biosynthesis, the conversion of ACC to
ethylene
iii)
Its activity can be the rate-limiting step in ethylene biosynthesis
iv)
That is encoded by a multigene family that is differentially regulated
v)
It is present in such low amounts in plant tissues and is very unstable and
also difficult to purify the enzyme for biochemical analysis
vi)
These enzymes belong to the Fe2+/ascorbate oxidase superfamily
Find out the correct combination from the given enzymes and its character?
#Question id: 1825
#Unit 4. Cell Communication and Cell Signaling
Opsonization of bacteria occurs through coating bacteria just with:
#Question id: 2170
#Unit 2. Cellular Organization
How does uniport transport compare with simple diffusion?
#Question id: 10135
#Unit 6. System Physiology – Plant
Which of the following are strongest reductant?