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TLS Online TPP Program

#Question id: 20401

There were four rules of parity given by Erwin Chargaff 
1) Base A in one strand of the duplex is matched by (T) in the other strand, and base G in one strand of the duplex is matched by a complementary base (C) in the other strand
2) equal amounts of A and T, and equal amounts of C and G, in each single strand of the duplex. 
3) Purines in non-template strand applies more closely to Exons
4) GC content tends to be greater in exons than in introns
choose the correct option regarding rules 

#Unit 3. Fundamental Processes
  1. First is rule of GC Rule, second is Rule of Cluster rule, third is Equal amount, fourth is complementarity
  2. First is rule of complementarity, second is Rule of Equal amount, third is GC Rule, fourth is Cluster rule
  3. First is rule of Equal amount, second is Rule of complementarity, third is Cluster rule, fourth is GC Rule
  4. First is rule of complementarity, second is Rule of Equal amount, third is Cluster rule, fourth is GC Rule
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TLS Online TPP Program

#Question id: 2056

#Unit 4. Cell Communication and Cell Signaling

A mother has an Rh- and the father an Rh+ blood type. The first baby born to the parents was Rh+ . However, the parents elect for the mother not to receive Rhogam. future babies of this couple at risk for
TLS Online TPP Program

#Question id: 2057

#Unit 4. Cell Communication and Cell Signaling

Lymph nodes and the spleen are the most highly organized secondary lymphoid organs. T-cell and B-cell activity are separated into distinct microenvironments in both. T cells and B cells  are found in
TLS Online TPP Program

#Question id: 2058

#Unit 4. Cell Communication and Cell Signaling

NOD-like receptors (NLRs) are a large family of cytosolic PRRs activated by intracellular PAMPs, DAMPs, and other harmful substances. The NOD NLRs bind intracellular microbial components such as cell wall fragments. NLRC family are NOD1 and NOD2 recognise?
TLS Online TPP Program

#Question id: 13159

#Unit 4. Cell Communication and Cell Signaling

How signaling is involved in ensuring that yeast cells fuse only with cells of the opposite mating type?
TLS Online TPP Program

#Question id: 13160

#Unit 4. Cell Communication and Cell Signaling

According to the Switching mechanism, monomeric G proteins exist in two states. Match the following states (Column I) with correct mechanism (Column II).

Column I

Column II

A. “ON” state 

i. switch I and switch II, are bound to the terminal γ phosphate of GTP through interactions with the backbone amide groups of conserved threonine and glycine residues.

B. “OFF” state

ii. GTPase-activating proteins

 

iii. guanine nucleotide exchange factor

 

iv. Due to the removal of the γ phosphate by GTPase-catalyzed hydrolysis causes switch I and switch II to relax into a different conformation

TLS Online TPP Program

#Question id: 13161

#Unit 4. Cell Communication and Cell Signaling

Which of the following mechanism depends on the activation of heterotrimeric G proteins?