The two different forms of fibronectin mRNA produced by two different kinds of cells is an example of ____________.
A. transcriptional control
B. post-transcriptional control
C. transport control
D. translational control
E. post-translational control
Answer: B
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The selective permeability of a cell membrane is due to ____
a. the hydrophobic core formed by the phospholipid tails b. the hydrophilic end facing the cell exterior c. glycolipids on the surface of the membrane d. the position of cholesterol in the membrane bilayer e. the hydrophilic core formed by the phospholipid tails
Enzymes speed chemical reactions by
A. supplying energy to the reaction process. B. lowering the energy required to start a chemical reaction. C. lowering the amount of reactants that are needed. D. maintaining chemical equilibrium. E. raising the temperature of the surroundings.
For a transgenic animal line to be produced from a chimera, the transgene must be carried by what?
What will be an ideal response?
The disassociation of water molecules following irradiation is termed _____.
a) radiolysis b) ionization c) cross-linking d) point mutation