Lactate dehydrogenase (LDH) can exist as various tetrameric isozymes. Extracts from different rat tissues were run on a nondenaturing polyacrylamide gel and stained for LDH activity, as shown below. Standard tetramers of M subunits (M4) and H subunits (H4) were run alongside the tissue extracts. Which of the following is the subunit composition of the isozyme running at position 2 ?

TLS Online TPP Program

#Question id: 516

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following elements is required for the enzymatic reaction that produces phosphoenolpyruvate?

TLS Online TPP Program

#Question id: 1906

#Unit 4. Cell Communication and Cell Signaling

Graft vs host disease often accompanies transplantation of:

TLS Online TPP Program

#Question id: 28080

#Unit 6. System Physiology – Plant

Excitation of chlorophyll RC has various ways to dissipate energy, which of the following is not a way to dissipate energy 

a. Heat

b. Fluorescence

b. energy transfer

d. Photochemistry via charge separation

Which of the following is correct 

TLS Online TPP Program

#Question id: 156

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the N-terminal for the pentapeptide Val-Ile-Glu-Arg-Tyr?

TLS Online TPP Program

#Question id: 11364

#Unit 9. Diversity of Life Forms

Which of the following is a structure that permits conjugation to occur?