Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 45368
TLS Online TPP Program

#Question id: 7303

The ‘quartet model’ explains how the protein products of the ABCE-function genes might interact to control floral organ identity. Following statements are based on this model. Which one of them is incorrect?

#SCPH06 I Botany
  1. There are four combinations of floral MADS-box proteins. SEP proteins may form heterodimers with A (AP1) and B (AP3/ PI) proteins (for petals), B (AP3/PI) and C(AG) proteins (for stamens), and C (AG) protein (for carpels).
  2. All these genes, with the exception of AP2 (and its homologues), are MADS-box genes, a broad family of eukaryotic genes that encode transcription factors containing a highly conserved DNA-binding domain (MADS domain).
  3. The protein quartets are transcription factors and may function by binding to the promoter regions of target genes.

  4. According to the model, one dimer of each tetramer recognize two different sites on the same DNA strand, thus bringing these areas into proximity via DNA-bending.

More Questions
TLS Online TPP Program

#Question id: 19137

#I Life Science/ Life Sciences Group – I-V

Which of the following statement is correct about PAM.
TLS Online TPP Program

#Question id: 1773

#SCPH05 I Biotechnology

How many disulfide bonds are in an antibody?
TLS Online TPP Program

#Question id: 1410

#SCPH06 I Botany

The number of alterations in DNA per cell per day is
TLS Online TPP Program

#Question id: 99

#SCPH01 Biochemistry

Which of the following are the main reasons that glycoproteins are so diverse when compared to other proteoglycans are

A) they may contain different sugars in different combinations and chain lengths.

B) β or a-glycosidic linkages may join various carbon atoms in the sugars.

C) they are found in both bacterial, plant and animal cells.
TLS Online TPP Program

#Question id: 23255

#SCPH01 Biochemistry

From where do these centromeric probes are derived from the 
1. Highly repetitive DNA sequences
2. Alpha-satellite DNA sequences
3. Less repetitive DNA sequences
4. Beta-satellite DNA sequences
Which of the following option has correct combination?