We currently know:
A. all of the genetic risk factors for most
cancers and many common diseases.
B. many genetic risk factors for some cancers
and common diseases.
C. the individual mutations that cause colon
cancer, breast cancer, and Alzheimer's
disease.
D. the individual mutations that cause breast
cancer, lung cancer, and inflammatory bowel
disease.
E. the combination of genetic risk factors that
cause skin cancer, lung cancer, and colon
cancer.
B
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Many proto-oncogenes encode ____
a. growth inhibiting factors b. intracellular receptors
c. tumor suppressor proteins d. receptors for growth inhibiting factors e. growth factors
The molecular fragment (the G, U and A’s) represented in the accompanying figure is:
a. ATP.
b. RNA.
c. DNA.
d. a nucleotide.
e. a polysaccharide.
Some of the earliest forms of bioengineering include
a. selective breeding programs. b. use of microorganisms for fermentation. c. genomics. d. both selective breeding programs and the use of microorganisms for fermentation.
The cell walls of plant cells and prokaryotic cells are structurally identical
a. true b. false