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TLS Online TPP Program

#Question id: 7110

What may be the molecular trigger that causes cells in the presomitic mesoderm to finally condense into somites?

#Unit 5. Developmental Biology

  1. A gradient of retinoic acid exists that emanates both anteriorly and posteriorly from the somites.

  2. The FGF gradient drops off in the region that is forming somites.

  3. Periodic waves of c-hairy1 are expressed in the presomitic mesoderm, such that cells in the more anterior somites will have been exposed to fewer waves of c-hairy1 than the cells in more posterior somites.

  4. Signaling from the receptor Notch is required for somite formation.
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TLS Online TPP Program

#Question id: 10477

#Unit 1. Molecules and their Interaction Relevant to Biology

The tendency of nonpolar molecules to self‐associate in water rather than to dissolve individually is called
TLS Online TPP Program

#Question id: 10478

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the following amino acids with their structure?
TLS Online TPP Program

#Question id: 10479

#Unit 1. Molecules and their Interaction Relevant to Biology

All hydrophobic amino acids (valine, leucine, isoleucine, etc.) share which of the following properties
TLS Online TPP Program

#Question id: 10480

#Unit 1. Molecules and their Interaction Relevant to Biology

If we want to perform a reaction, first we need to remove ordered water molecule phenomenon is known as
TLS Online TPP Program

#Question id: 10481

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the amino acid appropriately with their groups

A. Guanidinium groupi. Histidine
B. Imidazole ringii. Arginine
C. Imino groupiii. All except proline
D. Amino groupiv. proline
TLS Online TPP Program

#Question id: 10482

#Unit 6. System Physiology – Plant

A herbicides dichlorophenyldimethylurea (DCMU) is known as diuron an inhibitor of photosynthetic electron transport. Which one of the following option would be correct about diuron?

a.) Blocks electron flow at the plastoquinone acceptors of PSII by competing for the binding site of plastoquinone

b.) causes a partial inhibition of stomatal closing

c.) accepts electrons from the early acceptors of PSI such as A0 and then reacts with oxygen to form superoxide, O2 –

d.) causes a partial inhibition of light-stimulated stomatal opening