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: 626

#Unit 1. Molecules and their Interaction Relevant to Biology

A metabolic pathway proceeds according to the scheme, R -> S -> T -> U -> V -> W.  A regulatory enzyme, X, catalyzes the first reaction in the pathway.  Which of the following is most likely correct for this pathway?

TLS Online TPP Program

#Question id: 627

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct ‘Dixon Plot’ for competitive inhibition for enzymes 

TLS Online TPP Program

#Question id: 628

#Unit 1. Molecules and their Interaction Relevant to Biology

At fixed substrate concentration, which of the following equation is correct for Dixon plot

TLS Online TPP Program

#Question id: 629

#Unit 1. Molecules and their Interaction Relevant to Biology

In the presence of a fixed concentration of a competitive inhibitor, which of the following would best characterize an enzyme-catalyzed reaction when the concentration of the substrate is increased?

TLS Online TPP Program

#Question id: 630

#Unit 1. Molecules and their Interaction Relevant to Biology

In case of competitive inhibition, plots of Km against [Io] fixed [Eo] have

TLS Online TPP Program

#Question id: 631

#Unit 1. Molecules and their Interaction Relevant to Biology

Two curves showing the rate versus substrate concentration are shown below for an enzyme-catalyzed reaction. One curve is for the reaction in the presence of substance X. The other curve is for data in the absence of substance X. Examine the curves and tell which statement below is false.