Bioengineered bacteria now produce
a. human insulin.
b. human growth hormone.
c. interferons.
d. useful human proteins.
e. all of these.
E
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Which of the following is not a way we can intentionally modify the genetic makeup of a cultivated species to protect it from herbivores?
A. crop breeding by manually making artificial crosses for desirable traits B. using bacteria to genetically introduce new genes to the plant C. importing new seed stock from other areas and crossing it with existing plants D. using viruses to insert novel defense genes into the plant E. spraying with chemical pesticides
Which of the following is correct?
a. All living things are composed of multiple cells. b. All cells arise from existing cells. c. Organelles are the basic unit of life. d. Living organisms do not have to be composed of cells.
Transcription starts at a region of DNA called a(n) _____
a. sequencer b. promoter c. activator d. terminator e. transcriber
A layer of permanently frozen ground is called permafrost. Indicate whether the statement is true or false