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TLS Online TPP Program

#Question id: 409

For the following reaction,DG'° = +29.7 kJ/mol. L-Malate + NAD+ -> oxaloacetate + NADH + H+ The reaction as written:

#XL - S Microbiology

  1. can never occur in a cell.

  2. can occur in a cell only if it is coupled to another reaction for which DG'°is positive.

  3. can occur only in a cell in which NADH is converted to NAD+ by electron transport.

  4. may occur in cells at some concentrations of substrate and product.

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TLS Online TPP Program

#Question id: 10570

#XL - R Botany

The diffusion coefficient (Ds ) is a characteristic of the substance

a) diffusion in liquid is much faster than diffusion in air

b) larger molecules have smaller diffusion coefficients

c) diffusion in air is much faster than diffusion in a liquid

d) Larger molecules have larger diffusion coefficient

Which of the following combination is correct?
TLS Online TPP Program

#Question id: 353

#XL - Q Biochemistry

Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?
TLS Online TPP Program

#Question id: 15409

#XL - S Microbiology

 A heterozygous trihybrid corn plant is testcrossed and the following progeny are produced (all traits are recessive to their wildtype alternative);
          booster                              6
          booster, silkless                  137       
          booster, liguleless, silkless      291
          liguleless                          142
          liguleless, silkless                  3
          silkless                            30
          booster, liguleless                  34
          wildtype                            339
What is the order of the loci on the chromosome? 
TLS Online TPP Program

#Question id: 10561

#XL - R Botany

Integral membrane proteins that form water-selective channels across the membrane, Because water diffuses faster through such channels than through a lipid bilayer
TLS Online TPP Program

#Question id: 4747

#XL - R Botany

How does incomplete dominance differ from incomplete penetrance?