#Question id: 4515
#Unit 3. Fundamental Processes
Transcription Activators are,
A. Known to facilitate transcription at hundreds of promoters,
B. Specific for a few promoters,
C. Sensitive to the binding of signal molecules,
D. Providing the capacity to activate or deactivate transcription in response to a changing cellular environment.
#Question id: 22965
#Unit 7. System Physiology – Animal
#Question id: 1409
#Unit 4. Cell Communication and Cell Signaling
Which DNA repair system is affected in patients with xeroderma pigmentosum?
#Question id: 12721
#Unit 6. System Physiology – Plant
There are the five groups of late embryogenesis abundant (LEA) proteins found in plants
Group
(family name) |
Functional information |
I) Group 1 (D-19 family) |
a) It is an
abundant protein in cotton embryos, Each putative dimer of this group may
bind as many as ten inorganic phosphates and their counterions |
II) Group 2 (D-11 family) |
b) Possibly functions in ion
sequestration to protect cytosolic metabolism When LE25 is expressed in
yeast, it confers salt and freezing tolerance |
III) Group 3 (D-7 family) |
c) In tomato, a
gene encoding a similar protein is expressed in response to nematode feeding |
IV) Group 4 (D-95 family) |
d) Contains more
water of hydration than typical globular proteins Overexpression confers
water deficit tolerance on yeast cells |
V) Group 5 (D-113 family) |
e) Often
localized to the cytoplasm or nucleus More acidic members of the family are
associated with the plasma membrane May act to stabilize macromolecules at
low water potential |
#Question id: 15906
#Unit 5. Developmental Biology