Transformation of cells using the technique of heat shock requires which of the following?
A) the use of zinc ions
B) brief electric shock
C) the use of calcium ions
D) brief exposure to elevated temperature
E) the use of calcium and brief exposure to elevated temperature
Answer: E
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The recognition of a chemical signal by a receptor protein in the membrane is most similar to ____
a. mRNA specifying the sequence of amino acids in a polypeptide b. binding of a specific substrate to the active site of an enzyme c. turning on gene transcription d. allosteric regulation of proteins e. an enzyme requiring a specific optimum pH and temperature for activity
The ____ is an extension of the upper body wall in mollusks
a. Radula b. Mantle c. gill d. lung e. siphon
Bioluminescence involves all of the following
EXCEPT a. stable electrons. b. ATP. c. oxygen. d. luciferin. e. luciferase.
A limitation of this hypothesis is that it applies only to _____ reproducing organisms.
What will be an ideal response?