Alfred Russell Wallace developed a theory of evolution very similar to Charles Darwin's
a. true
b. false
Answer: a. true
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The antiparallel polarity of the two DNA strands within the double helix affects DNA replication in that
A) it takes twice as long to replicate two strands sequentially from 5? to 3?. B) circular bacterial DNA does not have polarity, so a single strand can be copied twice. C) DNA polymerases synthesizing both strands move in the direction of the replication fork, one strand is replicated discontinuously. D) each portion of the double helix must be unwound twice so that both strands are replicated continuously.
Cell signaling during much of C. elegans development occurs along concentration gradients. What kind of signaling does this represent?
What will be an ideal response?
If you were to design a novel hydrophobic protein, which type of monomers would be most essential to incorporate in the molecule in order to achieve the desired result?
A. Purine-containing deoxyribonucleotides B. Amino acids with charged side chains C. Amino acids with nonpolar side chains D. Hydrophobic nucleic acids E. Polar amino acids
Which two minerals are stored in major quantities in bone tissue?
a. calcium and phosphorus b. calcium and iron c. iron and phosphorus d. calcium and iodine e. calcium and sodine