#Question id: 953
#Unit 1. Molecules and their Interaction Relevant to Biology
The degradation of arginine, histidine and proline all lead to the product ________.
#Question id: 11131
#Unit 7. System Physiology – Animal
Which statement concerning the generation of an action potential is correct?
#Question id: 23390
#General Aptitude
#Question id: 7269
#Unit 5. Developmental Biology
Following statements are regarding to gastrulation in chick embryo.
A.
During gastrulation, future mesodermal and endodermal cells migrate from the
epiblast through the primitive streak into the interior of the blastoderm.
B.
An aggregation of cells, known as Hensen’s node, forms at the posterior end of
the streak.
C.
As the streak extends, cells of the epiblast move toward the primitive streak,
through it, and then outward again underneath the surface to give rise
internally to the mesoderm and endoderm, the latter displacing a lower layer of
cells called the endoblast.
D.
Cells that remain in the epiblast form the endoderm.
Which of the following statements are correct?
#Question id: 10209
#Unit 6. System Physiology – Plant
Protection against photodamage is a multilevel process, excited state of chlorophyll is not rapidly quenched by photochemistry it can react with molecular oxygen to form toxic photoproducts such as as singlet oxygen (1 O2*) what can damage if this second line of defense also fails to eliminate the reactive photoproducts?