#Question id: 9185
#Unit 9. Diversity of Life Forms
Plants are affected by an array of pathogens. Which of the following is a plant defense against disease?
#Question id: 28052
#Unit 1. Molecules and their Interaction Relevant to Biology
Attractive van der Waals forces occur
#Question id: 3395
#Unit 11. Evolution and Behavior
The Hardy-Weinberg principle states that allele frequencies in a population will remain constant over generations if certain assumptions are met.
A. Random mating
B. Sexual selection
C. Migration
D. Large population size
E. Reproductive isolated from other population
F. Linkage of many genes
Which of the above factors will cause changes in allele frequencies overgenerations?
#Question id: 10761
#Unit 6. System Physiology – Plant
Which one of the following combinations of secondary metabolite biosynthetic pathway found in the biosynthesis of terpenes?
#Question id: 11840
#Unit 6. System Physiology – Plant
During an ethylene signalling pathway, what will have done inside cytosol and nucleus . Given below some
prediction about presence and absence of ethylene in column B match with column
A
|
COLUMN A |
COLUMN B |
|
I- In the presence of ethylene |
a) ETR1 signaling is repressed and CTR1 is
inactive |
|
II-
In the absence of ethylene |
b) ETR1 activate CTR1, a Ser/Thr kinase |
|
|
c) CTR1 phosphorylates the C-terminal domain
of EIN2 |
|
|
d) The nonphosphorylated C terminus of EIN2 is
cleaved by a protease |
|
|
e) Phosphorylation of EIN2 inhibits
proteolytic cleavage |
|
|
f) EIN3 transcription factors are
ubiquitinated and degraded in the nucleus by the 26S proteasome |
|
|
g) EIN3 initiates a transcriptional cascade by
activating expression of ethylene-responsive genes, including ERF1
transcription factor, leading to ethylene responses |