The "steps" of the DNA double helix spiral staircase are
A) sugars.
B) hydrogen bonds.
C) base pairs.
D) nucleotides.
C) base pairs.
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The Calvin cycle includes 15 enzymes, most of which are involved in __________
A. RuBP carboxylation B. RuBP regeneration C. reduction D. starch synthesis E. ATP synthesis
Which of the following could explain how 14 genes for globins, each specialized in their function (i.e., hemoglobin, myoglobin), arose in the genome?
A. misaligned crossover B. gene deletion C. gene mutation D. misaligned crossover and gene mutation E. misaligned crossover and gene deletion
The development of an adult from an unfertilized egg is called
A. parthenogenesis. B. budding. C. sporic meiosis. D. gametic meiosis. E. zygotic meiosis.
The hydrogen ion gradient across the thylakoid membrane is used to
What will be an ideal response?