Cephalization is most closely associated with which of the following?

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#Question id: 3868

#Unit 3. Fundamental Processes

The sigma factor of E. coli RNA polymerase: 

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#Question id: 31046

#Unit 4. Cell Communication and Cell Signaling

Ras induces a kinase cascade that includes Raf, MEK, and MAP kinase. Which of the following is a dual-specificity protein kinase?

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#Question id: 11900

#General Aptitude

The number of pair of positiveintegers whose sum is 99 and HCF is 9 is

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#Question id: 12999

#Unit 1. Molecules and their Interaction Relevant to Biology

Proline and glycine both disturb the symmetry of α-helix which of the following are true regarding to these two amino acids

a) proline changes the orientation of hetropolymeric α-helix hence proline can be placed only as 1st amino acid residue near to C-terminus 

b) proline changes the orientation of polymeric α-helix hence proline can be placed only as 1st amino acid residue near to N-terminus

c) glycine disrupts the heteropolymeric α-helix by changing the helicity.

d) homopolymer of proline and glycine can form stable helix. 

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#Question id: 10605

#Unit 10. Ecological Principles

DN/dt = rN (K-N/K )The logistic equation above is used to describe the rate of change of a population, N, with time, t, Where r is the intrinsic rate of increase and K is the carrying capacity. Which of N value will show maximum per capita growth rate?  (K= 1000, r =.05)