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TLS Online TPP Program

#Question id: 123

Which would you expect for the fatty acyl chains of the membrane phospholipids of bacteria grown at low temperature?

#XL - Q Biochemistry

  1. Proportion of unsaturated fatty acyl groups increases.

  2. Proportion of unsaturated fatty acyl groups decreases.

  3. No change in the proportion of saturated versus unsaturated acyl groups.

  4. More cholesterol is produced and is inserted between the fatty acyl chains of the membrane.

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TLS Online TPP Program

#Question id: 20253

#XL - P Chemistry

AB, A2 and B2 are diatomic molecules. If the bond enthalpies of A2, AB & B2 are in the ratio 1 : 1 : 0.5 and enthalpy of formation of AB from A2 and B2 is – 100 kJ/mol–1. What is the bond enthalpy of A2.
TLS Online TPP Program

#Question id: 5749

#XL - R Botany

Type of mutation in which a pyrimidine is substituted for a purine
TLS Online TPP Program

#Question id: 153

#XL - T Zoology

For the amino acid lysine, the Henderson-Hasselbalch equation can be applied to ________ ionization group(s)
TLS Online TPP Program

#Question id: 19566

#XL - P Chemistry

Which of the following forces bind together carbon atoms in diamond?
TLS Online TPP Program

#Question id: 6966

#XL - T Zoology

During gastrulation in the frog, the very first cells to move into the interior of the embryo through the blastopore come from the surface layer of cells in the marginal zone; they will become: