List three forms of DNA
What will be an ideal response?
A-DNA, B-DNA, and Z-DNA
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The different beaks of the many Galapagos finch species are homologous because they are variations of a common ancestral body plan.
a. true b. false
Mucus traps pathogens that are later coughed or sneezed away. What form of body defense applies to this example?
A) first line of defense
B) second line of defense
C) third line of defense
D) antibody-mediated immunity
One cell sends second messengers to another cell through gap junctions. What type of signaling would this be considered?
A. paracrine B. autocrine C. endocrine D. direct contact E. synaptic
Which statement is NOT correct about the results of the Hershey-Chase experiment with the T2 virus?
a. Radioactively labeled protein was found in the bacteria, not in the virus coats. b. Radioactively labeled DNA was found in the bacteria, not in the virus coats. c. DNA was labeled with radioactive phosphorus. d. Protein was labeled with radioactive sulfur. e. Two separate experiments were actually run, one with radioactive phosphorus and one with radioactive sulfur.