#Question id: 10807
#Unit 6. System Physiology – Plant
Cyanogenic Glycosides and Glucosinolates are nitrogen
containing secondary metabolites in plants. Following are some statements
regarding the action of Cyanogenic Glycosides and Glucosinolates;
a) Cyanogenic Glycosides release the poison hydrogen
cyanide by the action of enzyme known as Hydroxynitrile lyase
b) Release of the mustard-smelling volatiles from
glucosinolates is catalyzed by a hydrolytic enzyme, called a thioglucosidase or
myrosinase
c) substerate for Glycosidase is Cyanogenic glycoside
and Thioglucosidase is Aglycone
d) Like cyanogenic glycosides, glucosinolates are
stored in the intact plant separately from the enzymes that hydrolyze them, and
they are brought into contact with these enzymes only when the plant is crushed
Which of the following combinations of above statement is true?
#Question id: 11259
#Unit 10. Ecological Principles
The problem of __________ can be stated as: "given that time and resources are limited, how can the organism best use them to achieve its maximum possible evolutionary fitness?"
#Question id: 13231
#Unit 6. System Physiology – Plant
#Question id: 4955
#Unit 11. Evolution and Behavior
If relatively small carbonaceous chondrites from space were a significant source of Earthʹs original amino acids, then which two of these would have been most important in permitting their organic materials to survive impact with Earth?
I. Carbonaceous chondrites must contain no D-amino acids.
II. Earthʹs early atmosphere must have had little free oxygen.
III. The chondrites must have arrived on Earth before 4.2 billion years ago.
IV. Earthʹs early atmosphere must have been dense enough to dramatically slow the chondrites before they impacted.
V. The chondrites must have impacted land, rather than a large body of water.
#Question id: 12049
#Unit 7. System Physiology – Animal