#Question id: 1234
#Unit 4. Cell Communication and Cell Signaling
Which of the following mutations would likely have a similar cancer-promoting effect as the RasD mutation?
a. mutation in Grb2 so that it cannot bind Sos
b. mutation in Sos so that it binds Ras independent of Grb2
c. mutation in GAP so that it cannot bind Ras
d. mutation in EGF receptor so that it binds GRB2 independent of EGF
#Question id: 2933
#Unit 2. Cellular Organization
During G1, prereplication complexes:
#Question id: 10217
#Unit 6. System Physiology – Plant
Another effect that appears to be a major factor in the stability of the photosynthetic apparatus, which occurs when excess excitation arriving at the PSII reaction center leads to its inactivation and damage is known as
#Question id: 12741
#Unit 13. Methods in Biology
#Question id: 12641
#Unit 6. System Physiology – Plant
Column I |
column II |
I)
α-amylase inhibitors |
a)
Antidigestive proteins, block the action of herbivore proteolytic enzymes.
After entering the herbivore’s digestive tract, they hinder protein digestion
by binding tightly and specifically to the active site of protein-hydrolyzing
enzymes such as trypsin and chymotrypsin |
II) Lectins |
b) block the
action of the starch-digesting enzyme |
III)
proteinase inhibitors |
c) A
defensive proteins that bind to carbohydrates or carbohydrate-containing
proteins. After being ingested by an herbivore, bind to the epithelial cells
lining the digestive tract and interfere with nutrient absorption |