Practice Questions

TLS Online TPP Program

#Question id: 7166

Just prior to the onset of gastrulation in an embryo, the "organizer" cells are specified. If you were to experimentally block the specification of these cells, what would you expect the result to be in the developing embryo?

#Unit 5. Developmental Biology

There would be no effect on development.
Gastrulation would not occur, and normal development would cease.
The body axes would develop normally, but the embryo would not grow appendages.
The embryo would not develop an intestine, but all other organs and tissues would develop normally.

More Questions

TLS Online TPP Program

#Question id: 14968

#Unit 2. Cellular Organization

What compound provide much of the wall's antigenic specificity and thus make it possible to identify gram-positive bacteria by certain laboratory tests

TLS Online TPP Program

#Question id: 32339

#Unit 2. Cellular Organization

When the profilin–actin complex binds a free plus end, a conformational change in actin:

TLS Online TPP Program

#Question id: 2452

#Unit 2. Cellular Organization

Intermediate filaments

a. are typically 6 nm in diameter.

b. are essential for cell motility.

c. may be used to diagnose the tissue of origin for many cancers.

d. are composed of globular subunits.

e. are formed from tetrameric subunits.

TLS Online TPP Program

#Question id: 28645

#Unit 2. Cellular Organization

Which of the activity ensuring that replication from each origin occurs only once during each cell cycle?

TLS Online TPP Program

#Question id: 7524

#General Aptitude

City X is at a distance of 560 km from City Y. A train starts from City Y to City X at 6 a.m. with a speed of 40 kmph. Another train starts from City X to City Y at 7 a.m. with a speed of 60 kmph. At what distance from City Y will the two trains be at the point of crossing?