This is the process a cell goes through to become a particular cell type, based on the proteins that it expresses and is more-or-less a permanent condition.
A. differentiation
B. somatic cell transfer
C. discrimination
D. determination
A. differentiation
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Which of the following is a difference between prokaryotes and eukaryotes?
a. In prokaryotes, the DNA is sequestered inside the nucleus; in eukaryotes, it is in the cytoplasm. b. In eukaryotes, transcription starts with a final copy of mRNA; in prokaryotes, there is pre-mRNA, and it must be edited to make the final transcript. c. In eukaryotes, translation only occurs after transcription; in prokaryotes, they happen simultaneously. d. In prokaryotes, there are exons and introns; in eukaryotes, there are neither of these.
This adaptation decreases water loss in marine reptiles
a. Scaled-skin lacking glands b. Efficient kidneys c. Advanced circulatory system d. Active lifestyle
Which of the following statements is a testable scientific hypothesis?
A) Antioxidants from food are better than antioxidants from a vitamin pill. B) Eating fish reduces the chance of having a stroke. C) Embryonic stem cell research will allow scientists to find a cure for diabetes. D) Smoking makes people less attractive.
Which DNA damaging agent can transfer methyl groups (—CH3) to the nucleotide bases in DNA?
a. UV light b. Chemicals in tobacco smoke c. Ionizing radiation d. X-rays e. Free radicals