Practice Questions

TLS Online TPP Program

#Question id: 9593

The lower-energy orbital of the positively charged oxidized reaction centre chlorophyll has a vacancy and can accept an electron If the acceptor molecule donates its electron back to the reaction centre chlorophyll, What will happened?

#XL - Q Biochemistry

The system will be returned to the state that existed before the light excitation, and all the absorbed energy will be converted into heat
The system will be returned to the state that existed before the light excitation, because there is no way to returned back to the reaction centre
The system will be returned to the state that existed before the light excitation, and all the absorbed energy will be converted into emission of light
System will be returned to the state that existed before the light excitation, and all the absorbed energy will be converted into re-emitting energy as a photon

More Questions

TLS Online TPP Program

#Question id: 15334

#XL - S Microbiology

In which type of BCR (surface protein) present on to the B-cell, which are responsible for the conversion of membrane bound into secreted form of antibody. If it is not present then this conversion isn’t possible;

TLS Online TPP Program

#Question id: 15337

#XL - S Microbiology

HSCs express which type of cell-surface molecule, which is the receptor for stem cell factor (SCF). It is a cytokine that exists in both membrane-bound and soluble forms and the SCF-surface molecules interaction is critical for the development, in adult animals, of multipotential progenitor cells (MPPs). Which type of surface molecules HSCs express?

TLS Online TPP Program

#Question id: 15338

#XL - S Microbiology

Which cell generated on the receipt of SCF/c-Kit signaling lose the capacity for extensive self-renewal, but retain the potential to differentiate into several different hematopoietic lineages and also transiently express the molecule CD34?

TLS Online TPP Program

#Question id: 15339

#XL - S Microbiology

HSCs begin their life in close contact with osteoblasts located close to the lining of the endosteal cavity. Once differentiated to the pre-pro-B-cell stage, the developing B cells require Which type of signals from the chemokine, which is secreted by a specialized set of stromal cells?

TLS Online TPP Program

#Question id: 15340

#XL - S Microbiology

Serrogate light chain formation takes place in

TLS Online TPP Program

#Question id: 15342

#XL - S Microbiology

The heavy chain is then expressed on the cell surface in combination with the surrogate light chain, which is made up of_______________, together they form the pre-B-cell receptor,