#Question id: 759
#Unit 1. Molecules and their Interaction Relevant to Biology
The Watson and Crick structure of DNA refers to:
#Question id: 34149
#Unit 7. System Physiology – Animal
#Question id: 515
#Unit 1. Molecules and their Interaction Relevant to Biology
Which amino acidʹs residue plays a role in the phosphoglycerate mutase reaction in glycolysis for muscle and yeast?
#Question id: 7226
#Unit 5. Developmental Biology
Experimental
evidences suggest that control of proximal-distal specification of the limb is
correlated with the age of the progress zone mesenchyme. Match the following
experiment (Column I) with their results (Column II).
|
Column I |
Column II |
|
A.
when an early wing bud progress zone was transplanted to a late wing bud |
I.
Normal limbs form |
|
B.
when a late wing-bud progress zone was transplanted to an early wing bud |
II.
Lack of intermediate structures |
|
C.
when an early wing bud progress zone was transplanted to an early wing bud |
III.
An extra set of ulna and radius formed |
|
D.
when a late wing-bud progress zone was transplanted to a late wing bud |
|
#Question id: 2533
#Unit 2. Cellular Organization
Cellulose microfibrils have an ordered structure and are synthesized at the plasma membrane, given characteristics of microfibrils;
a) Each microfibril is composed of an estimated 18 parallel chains of (1,4)-linked β-D-glucose chains tightly bonded to each other to form a crystalline microfibril
b) Microfibrils have hydrophilic surfaces, populated by polar –OH groups extending from theplane of the sugar rings
c) Microfibrils have hydrophobic surfaces, populated by nonpolar C–H groups populating thesides of stacked glucose chains
d) microfibril important for enzymatic attack by microbial cellulases, which dock onto the hydrophobic surface and remove one glucan chain at a time
Which of the following from given characterstics of microfibrils is incorrect?