#Question id: 7284
#Unit 5. Developmental Biology
Choose
the correct match.
|
Genes |
Axis
polarity |
|
a.Maternal deficiency of gurken
|
i.Posteriorization of follicle cells |
|
b.Maternal deficiency of torpedo
|
ii.Ventralization of embryo |
|
c. Maternal deficiency of toll |
iii.Dorsalization
of embryo |
|
|
iv.No
anterior posterior axis |
#Question id: 11138
#Unit 7. System Physiology – Animal
The point of connection between two communicating neurons is called the ________.
#Question id: 1246
#Unit 4. Cell Communication and Cell Signaling
An SH2-containing protein contains a mutation that changes its binding pocket such that tyrosine and phosphotyrosine bind with equal affinity. As a result, MEK activity:
#Question id: 861
#Unit 1. Molecules and their Interaction Relevant to Biology
Alexander Varshavsky discovered, the half-lives of many cytoplasmic proteins vary with the identities of their N-terminal residues via the so-called N-end rule:-
|
A. Destabilizing N-terminal residues Asp, Arg, Leu, Lys, and Phe have half-lives of |
i. Only 2 to 3 minutes, |
|
B. Stabilizing N-terminal residues Ala, Gly, Met, Ser, Thr, and Val have half-lives of |
ii. >10 hours in prokaryotes iii. >20 hours in eukaryotes. |
#Question id: 3405
#Unit 11. Evolution and Behavior
Phylogenies can be used to test whether speciation has been sympatric or allopatric. Following figure shown a new species arises by allopatric speciation, its nearest relative will usually live in a different geographic area, such as in a nearby lake. Which of the following phylogenetic tree is correct?