TLS Online TPP Program

#Question id: 32240

#Unit 2. Cellular Organization

Which one of the following GTPase switch protein activated at the ER membrane?

TLS Online TPP Program

#Question id: 16132

#Unit 13. Methods in Biology

You are running a human assisted reproduction clinic and providing state-of-the-art genetic diagnostic services. A married couple who already had a child with cystic fibrosis approach you because they wish to have another child, but only if they can be assured that the child will not have cystic fibrosis. You genotype the woman and discover that she is a heterozygote for Del508, the most common mutation causing cystic fibrosis. You suggest that the couple consider first polar body testing, in which several unfertilized oocytes (each with its first polar body) are retrieved from the woman, the first polar bodies are removed, and PCR tests are conducted on DNA from each of the first polar bodies. The couple agrees, and you obtain the following results:

 

the observation that the polar bodies for oocytes #1 and #5 test positive for both Del508 and the wild type sequence, because

TLS Online TPP Program

#Question id: 12712

#Unit 6. System Physiology – Plant

ROS using respiratory burst oxidase homolog (RBOH) or NADPH  oxidase for Self- generation mechanism by some other processes , which are involved in ROS generation such as,

A) The amino-terminal cytoplasmic domain of RBOH proteins contains four serines (Ser) that can be phosphorylated by CDPKs and two EF hands that can bind calcium directly 

B) As ROS generation such as  H2O2,  by putting electron for oxidising  oxygen into the free radicals, these electron generation by oxidising NADPH and FADH2 in the cytosolic carboxy terminal of RBOH protein

C) The elevation of calcium and ROS levels during the early stages of the stress response activates protein kinases and phosphatases

D) ROS activated Ca2+ channel leads to Ca2+  influx from apoplastic space  to cytosol

Arrange the correct order of  following steps involve in ROS generation;

TLS Online TPP Program

#Question id: 15848

#Unit 4. Cell Communication and Cell Signaling

viruses frequently expose unique chemical structures only during their replication inside host cells. Many of these can be detected via intracellular receptors that bind exposed chemical moieties while still inside the host cell. This can trigger an immediate antiviral response in the infected cell that blocks further virus replication. At the same time, this initiates the secretion of chemical warning signals sent to nearby cells to help them guard against infection (a neighborhood watch system!). virus is not recognised which receptor?

TLS Online TPP Program

#Question id: 1938

#Unit 4. Cell Communication and Cell Signaling

Which of the following antibodies are useful for the diagnosis of Sjögren's syndrome?