What compound served to contain interacting organic molecules within a protocell?
a. RNA
b. DNA
c. lipids
d. single amino acids
e. amino acid polymers
c
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When an enzyme breaks the bond between the second and third phosphate group on ATP ____
a. energy is released b. ATP is produced c. glucose is produced d. cellular work decreases
e. metabolism decreasesSuccessful insertion of a DNA fragment into the polylinker region of pBluescript II is detected by
A) production of the enzyme ?-galactosidase. B) absence of the enzyme ?-galactosidase. C) the increased size of the plasmid. D) autoradiography. E) None of these
Most liquids become less dense upon solidification, but water is different in that it becomes denser when it solidifies
Indicate whether the statement is true or false
How are X rays used in the technique of X-ray diffraction?
A) The scattering of X rays by a purified form of a molecule reveals its structure. B) Cells are broken open to release chromosomes by being bombarded with X rays. C) DNA strands are separated by X-ray energy, revealing the order of bases. D) The X rays are used to mutate DNA to determine the location of genes. E) Enzymes are destroyed by X rays, revealing the order of steps in metabolism.