TLS Online TPP Program

#Question id: 5822


. __ are the result of exposure of organisms to physical and/or chemical agents that cause changes in DNA or RNA.

#Unit 8. Inheritance Biology
  1. Spontaneous mutations

  2. Induced mutations

  3. Point mutations

  4. Frameshift mutations

More Questions
TLS Online TPP Program

#Question id: 32343

#Unit 2. Cellular Organization

At intermediate concentrations of actin subunits, the plus end of the filament remains in the T conformation, while the minus end adopts the D conformation because:

TLS Online TPP Program

#Question id: 5336

#Unit 8. Inheritance Biology

In a cross between a heterozygous, red-eyed female fruit fly and a white-eyed male, what percent of the male offspring will have white eyes?(white eyes are X-linked, recessive)  

TLS Online TPP Program

#Question id: 28478

#Unit 5. Developmental Biology

 Select the correct statements about these transcriptional factors-sox2, oct4 and nanog ?
a) these transcriptional factors activating those genes required to maintain totipotency in embryonic stem cells
b) these transcriptional factors activating those genes required to maintain pluripotency in embryonic stem cells
c) these transcriptional factors repressing those genes whose products would lead to differentiation

TLS Online TPP Program

#Question id: 10436

#Unit 6. System Physiology – Plant

Both PHYA and PHYB activate the transcription of LHCB gene for its expression, there following events occur during the activation of LHCB gene such as;

a) PhyA, both form is activated Pr and Pfr by phosphorylation Pr form move into the nucleus activate the light-regulated gene expression during degradation of  the HY5 by COP1

b) PhyA, Pfr form is activated by phosphorylation and move into the nucleus where it’s export the COP1 out of the nucleus, and activate the light-regulated gene expression

c) Phy B, activated phosphorylated Pfr form is move into the nucleus and binds to a dimer of the transcription factor PIF3, by inibiting PIF3 expression activate the transcription of LHCB gene by intermediate transcriptional factor MYB

d) Phy B, activated unphosphorylated Pfr form is move into the nucleus and binds to a monomer of the transcription factor PIF3, by inibiting PIF3 expression activate the transcription of MYB gene by intermediate transcriptional factor LHCB

Which of the following combination of the above statements of phytochrome forms is correct?

TLS Online TPP Program

#Question id: 20276

#Unit 7. System Physiology – Animal

Central diabetes insipidus is caused by failure of the posterior pituitary to secrete ADH and the following statements pertain to that disorder:
A. excretion of large volumes of dilute urine
B. the urine cannot be concentrated
C. produces large volumes of dilute urine
D. increased serum osmolarity
E. circulating levels of ADH are high
Which of the following is the correct combination of the statements given above?