Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 53388
TLS Online TPP Program

#Question id: 28325

The pattern of embryonic cleavage peculiar to a species is determined by two major parameters: 
(1) the amount and distribution of yolk protein within the cytoplasm, which determine where cleavage can occur and the relative sizes of the blastomeres
(2) factors in the egg cytoplasm that influence the angle of the mitotic spindle and the timing of its formation

Which of the following statements is incorrect about patterning of embryonic cleavage?

#Unit 5. Developmental Biology
  1. Species having Isolecithal egg follow a holoblastic cleavage in which cleavage furrow extends through the entire egg
  2.  Species having mesolecithal egg follow a meroblastic cleavage in which cleavage furrow cleaved only a portion of the cytoplasm
  3. species having telolecithal egg follow a meroblastic cleavage that is incomplete cleavage
  4. Species having centrolecithal egg follow a meroblastic cleavage in which cleavage furrow cleaved only a portion of the cytoplasm and does not penetrate the yolky portion
More Questions
TLS Online TPP Program

#Question id: 27092

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following ions are essentially involved in EF hand motifs
TLS Online TPP Program

#Question id: 27093

#Unit 1. Molecules and their Interaction Relevant to Biology

Say a, b, c, d, e, f, g  are the amino acid forming αα motif / Coiled-coils then which of the condition must be followed to form perfect αα motif / Coiled-coil

(1) 'a' & 'd' are hydrophobic residues

(2) 'a' & 'd' are hydrophilic residues

(3) 'e' and 'g' are found to be charged amino acids

(4) 'e' and 'g' are found to be uncharged amino acids
TLS Online TPP Program

#Question id: 27094

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is incorrect regarding the βαβ Motif
TLS Online TPP Program

#Question id: 27095

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct regarding the Type I β turn positions  Ramachandran plot
TLS Online TPP Program

#Question id: 27096

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is incorrect regarding the Type II β turns
TLS Online TPP Program

#Question id: 27097

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct regarding the β turns
(1) In Type I β turn i+1 lies in RHH region while i+2 lies near BS region
(2) In Type II β turn i+1 lies in BS while i+2 lies in below LHH
(3) In Type I’ β i+1and i+2 in near LHH which virtually not allowed region for most of amino acid except Gly
(4) In Type II’ β i+2 lies at 00 psi and i+1 in lower right region both i+2 and   i+1  must be Gly