After digesting a DNA sequence, a restriction endonuclease can generate
A) blunt ends.
B) overhangs.
C) sticky ends.
D) blunt ends, overhangs, or sticky ends.
Answer: D
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Which of the following statements best represents the relationships between the light reactions and the Calvin cycle?
A) The light reactions provide ATP and NADPH to the Calvin cycle, and the Calvin cycle returns ADP, i, and NADP+ to the light reactions. B) The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the cycle provides water and electrons to the light reactions. C) The light reactions supply the Calvin cycle with CO2 to produce sugars, and the Calvin cycle supplies the light reactions with sugars to produce ATP. D) The light reactions provide the Calvin cycle with oxygen for electron flow, and the Calvin cycle provides the light reactions with water to split. E) There is no relationship between the light reactions and the Calvin cycle.
Describe the similarities and differences between sperm and ova.
What will be an ideal response?
For each of the three basic macromolecules (proteins, polysaccharides, and nucleic acids), identify the monomer, its activated/carrier form, and the directionality of the molecule.
What will be an ideal response?
A pouchlike weak spot in an artery is known as a(n)
a. aneurysm. b. varicosity. c. plaque. d. herniation. e. hemangioma.