A molecule that induces an immune response within an organism is called
A. an antibody.
B. a lymphocyte.
C. an interleukin.
D. an antigen.
Answer: D
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Based on their experiment with T2 bacteriophages, Hershey and Chase concluded that
A. DNA replication is semiconservative. B. the phage coat contains the genetic material. C. DNA functions as the genetic material. D. A always pairs with T and G always pairs with C. E. virulent bacteria can transform nonvirulent bacteria.
The basic method of genetic analysis in humans requires a(n) ____________________ of several generations
Fill in the blank(s) with correct word
A lac Y- mutant would
A) be constitutive. B) no longer be induced by the presence of lactose. C) not have ?-galatosidase activity. D) transport lactose into the cell effectively. E) metabolize lactose.
A protein that increases the rate of transcription but does not directly bind to the DNA is called a __________
Fill in the blank(s) with the appropriate word(s).