#Question id: 12741
#Unit 13. Methods in Biology
#Question id: 1479
#Unit 4. Cell Communication and Cell Signaling
The multi-spanning, ubiquitously expressed C. elegans plasma membrane protein CED-8 and its mammalian homolog Xkr-8 are required for-
#Question id: 11781
#Unit 7. System Physiology – Animal
A 40-year-old woman comes to the emergency room with a fracture in the neck of the femur. Radiographs reveal generalized demineralization of the bone in the area. Her plasma calcium ion concentration is significantly greater than normal: 12.2 mg/dL. Which of the following conditions is consistent with this presentation?
#Question id: 7264
#Unit 5. Developmental Biology
The Dictyostelia social
amoebas are found in a wide range of soil habitats. They can come together to
form a fruiting structure, in which a proportion of cells are sacrificed to
build the stalk and the remainder differentiate into resilient dormant spores.
This multicellular life cycle is common to all Dictyostelids. It consists
of an interconnected programme of cell movement and cell differentiation, and
has been intensively studied in the model organism D. discoideum. Few mutants
(Column A) and phenotypes (Column B) are listed in the table given below.
|
Column A |
Column B |
|
A.
Loss of function of cAMP-dependent
protein kinase (PKA) |
i.
cell develop normally but unable to germinate |
|
B.
Loss of function of RegA |
ii.
Loose aggregate form |
|
C.
Loss of function of adenylate cyclase B |
iii.
No aggregation |
|
D.
Loss of function of gp80 |
iv.
accumulation of cAMP and PKA activation |
#Question id: 30046
#Unit 6. System Physiology – Plant