#Question id: 14820
#Unit 2. Cellular Organization
#Question id: 29520
#Unit 6. System Physiology – Plant
Which of the following defence system is more costly to the plants
#Question id: 2975
#Unit 2. Cellular Organization
Following statements are regarding to the Surveillance mechanisms in cell cycle regulation.
A. Surveillance mechanisms known as checkpoint pathways establish dependencies among cell cycle events and ensure that the next cell cycle event does not occur prior to the completion of a preceding event.
B. In response to DNA damage, two related protein kinases, ATM and ATR, are recruited to the site of the damage, where they activate signaling pathways that lead to cell cycle arrest, repair, and under some circumstances, apoptosis.
C. The spindle assembly checkpoint pathway, which causes initiation of anaphase, utilizes Mad2 and other proteins to regulate APC/CCdc20, which targets securing and mitotic cyclins for ubiquitinylation.
D. The spindle position checkpoint pathway prevents mitotic CDK inactivation when the spindle is mispositioned. In this pathway, localized activators and inhibitors and a sensor that shuttles between them allow cells to sense spindle position.
Which of the following statement is incorrect?
#Question id: 27511
#Unit 2. Cellular Organization
Which of the following is true when a Intercalation of ethidium ion into the DNA takes place
a. It unwind the two base pair by 260
b. Reduces the normal rotation per base pair from 360 to 100
c. Increases the normal rotation per base pair from 100 to 360
d. It first removes the negative supercoils and then introduces positive supercoils
#Question id: 20986
#Unit 12. Applied Biology