​The cytoplasmic domain of the receptor of which of the following proteins does NOT function as tyrosine kinase?​

​Nitric oxide (NO) acts as intracellular second messenger by stimulating​

​If TLR2 is knocked out from human monocyte-derived macrophages, PAMP recognition by which one of the following TLRs will most probably get affected?​

​The cytoplasmic domain of the receptor of which of the following proteins does NOT function as tyrosine kinase?​

The signal transduction pathway involved in glycogen metabolism triggered in the liver by the hormone epinephrine involves the following steps:
A. Activation of G protein (Gαs) by the activated receptor
B. Protein kinase A activation
C. Second messenger generation (3′,5′ cyclic AMP)
D. Adenylyl cyclase activation
Which one of the following combinations describes these processes in the right order?​

Men suffering from enlarged prostate disease were prescribed drugs that would specifically target the androgen receptor (AR). While developing the drug, the following considerations were deliberated on:

A. Drugs should target the N-terminal domain of the AR.
B. Drugs should not target the NLS domain of the AR.
C. The drug should bind to the ligand-binding domain of the AR.
D. The drug should activate CYP17A1 to facilitate conversion of pregnenolone to DHEA.

Which one of the following combinations of considerations will develop the best drug for treatment of enlarged prostate?

The insulin receptor is a receptor tyrosine kinase that engages the PI3 kinase pathway to regulate a FOXO transcription factor. A student uses qRT-PCR to determine the expression of a direct FOXO target gene (GeneX) in a mammalian cell line under different conditions and makes the following observations.

A. Treating the cells with a PTEN inhibitor increases GeneX expression.
B. A cell line with an AKT (S308A) mutation has increased GeneX expression.
C. Change in GeneX expression due to a ligand-binding defective insulin receptor is partly reversed by a PTEN inhibitor.
D. Phosphorylation of FOXO by PDK1 creates a phosphoserine binding site for 14-3-3 protein, reducing GeneX expression.

Which one of the following options represents all correct statements?

The CaM Kinase II acts as a molecular memory device as well as a frequency decoder of Ca²⁺ oscillation. Which one of the following statements regarding CaM Kinase II is INCORRECT?​

Two protein kinases, K1 and K2, regulate an intracellular pathway in response to the extracellular signal. The following observations were made regarding the pathway.

i. Response is observed even in the absence of an extracellular signal when a mutation permanently activates K1.
ii. Response is observed even in the absence of an extracellular signal when K1 contains an activating mutation and K2 has an inactivating mutation.
iii. No response is observed even in the presence of an extracellular signal when K2 is inactivated by mutations.
iv. Response is observed even in the absence of an extracellular signal when both kinases are activated by mutations.

Which one of the following statements is correct?

Which one of the following statements regarding ligand identity and effector dynamics is typically correct?

Some of the sequence of events involved in phototransduction in rod cells upon illumination are given below:
A. Hyperpolarization
B. Activation of phosphodiesterase
C. Decreased release of synaptic transmitter
D. Activation of transducin
E. Decreased intracellular cGMP
F. Conformational change in rhodopsin
Choose the correct sequence of events in visual transduction during light perception