Practice Questions

TLS Online TPP Program

#Question id: 9270

In the lowest excited state, the excited chlorophyll has four alternative pathways for disposing of its available energy which of the statement of alternative pathway would be INCORRECT?

#Unit 6. System Physiology – Plant

Excited chlorophyll can re-emit a photon and thereby return to its ground state—a process known as fluorescence, When it does so, the wavelength of fluorescence is slightly longer than the wavelength of absorption
The excited chlorophyll can return to its ground state by directly converting its excitation energy into heat, with the emission of a photon
Chlorophyll may participate in energy transfer, during which an excited chlorophyll transfers its energy to another molecule
The photochemistry, in which the energy of the excited state causes chemical reactions to occur, the photochemical reactions of photosynthesis are among the fastest known chemical reactions

More Questions

TLS Online TPP Program

#Question id: 191

#Unit 1. Molecules and their Interaction Relevant to Biology

The role of zinc in the mechanisms of carbonic anhydrase is to

TLS Online TPP Program

#Question id: 31296

#Unit 5. Developmental Biology

If either Nodal or Vg1 signaling is blocked in Xenopus laevis, resulting;

TLS Online TPP Program

#Question id: 26558

#Unit 3. Fundamental Processes

Which of the following is correct

A. Cas1 is integrase

B. Cas2 is a ribonuclease

C. Cas6 is involved in expression and processing of the CRISPR cluster

D. Cas3 in the interference of viral infection

TLS Online TPP Program

#Question id: 33474

#Unit 2. Cellular Organization

CTG/CAG trinucleotide repeats (5ʹ- CTG in one strand and 5ʹ-CAG in the other strand) is unusually flexible. What can be their probable role?

TLS Online TPP Program

#Question id: 388

#Unit 1. Molecules and their Interaction Relevant to Biology

Calculate the pH of a solution prepared by mixing 2.0 mL of a strong acid solution of pH=3.0 and 3.0 mL of a strong base of pH=10.0.