Practice Questions

TLS Online TPP Program

#Question id: 11501

According to the endosymbiotic theory of the origin of eukaryotic cells, how did mitochondria originate?

#Unit 9. Diversity of Life Forms

from infoldings of the plasma membrane, coupled with mutations of genes for proteins in energy-transfer reactions
from engulfed, originally free-living prokaryotes
by secondary endosymbiosis
from the nuclear envelope folding outward and forming mitochondrial membranes

More Questions

TLS Online TPP Program

#Question id: 33275

#Unit 2. Cellular Organization

Which of the following is the central player in chromosome segregation?

a. Interpolar microtubules

b. Astral microtubules

TLS Online TPP Program

#Question id: 33276

#Unit 2. Cellular Organization

For microtubule formation, mitotic chromosomes generate local signals that activate:

TLS Online TPP Program

#Question id: 33277

#Unit 2. Cellular Organization

Which of the following kinesins are called chromokinesins, which are plus end–directed motors that associate with chromosome arms and push the attached chromosome away from the pole?

TLS Online TPP Program

#Question id: 33278

#Unit 2. Cellular Organization

During chromosome attachment to the mitotic spindle, the tension-sensing mechanism depends on the protein, known as:

TLS Online TPP Program

#Question id: 33279

#Unit 2. Cellular Organization

The opposite end of the Ndc80 complex is attached through intermediary proteins to centromeric nucleosomes containing a specialized version of histone called:

TLS Online TPP Program

#Question id: 33280

#Unit 2. Cellular Organization

During spindle assembly checkpoint, any kinetochore that is not properly attached to microtubules sends out a diffusible negative signal that blocks: