TLS Online TPP Program

#Question id: 3875


Splicing of introns in nuclear mRNA primary transcripts requires:

#Unit 3. Fundamental Processes
  1. a guanine nucleoside or nucleotide.

  2. endoribonucleases.

  3. polynucleotide phosphorylase.

  4. small nuclear ribonucleoproteins (snurps).

More Questions
TLS Online TPP Program

#Question id: 5367

#Unit 8. Inheritance Biology

Following pedigree showing X link recessive disorder. Which of the following confirm a carrier female in a family?

TLS Online TPP Program

#Question id: 2536

#Unit 2. Cellular Organization

If the cytoplasm of a cell is at pH 7, and the mitochondrial matrix is at pH 8, then the concentration of H+ ions ________.

TLS Online TPP Program

#Question id: 12091

#Unit 10. Ecological Principles

Which of the following is a postzygotic isolating mechanism in speciation?

TLS Online TPP Program

#Question id: 29479

#Unit 6. System Physiology – Plant

Auxin promotes the transcription of ----a---and to repress the transcription of-----b------

TLS Online TPP Program

#Question id: 5144

#Unit 5. Developmental Biology

Following statements regarding to noncanonical wnt pathways.

A. The planar cell polarity, or PCP, pathway functions to regulate the actin and microtubule cytoskeleton, thus influencing cell shape, and often results in bipolar protrusive behaviors necessary for a cell to migrate.

B. Wnts (such as Wnt5a and Wnt11) can activate Disheveled by binding to a different receptor (Frizzled paired with Ror instead of Lrp5), and this Ror receptor complex phosphorylates Disheveled in a way that allows it to interact with Rho GTPases.

C. Wnt/PCP signaling through cytoskeleton control can direct cells to divide in the different plane ( forming upper and lower tissue compartments) and to move within that different plane.

D. the Wnt/calcium pathway leads to the release of calcium stored within cells, and this released calcium acts as an important secondary messenger to activates a phospholipase (PLC) whose enzyme activities release a compound that in turn releases calcium ions from the cytosol.

Which of the following is incorrect?