What is the transcription product of the sequence GCTAGCGATGAC?
A) CGTUCGCUTCUG
B) CGAUCGCUACUG
C) CAGTAGCGATCG
D) CGUTCGCUTCUG
Answer: B
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Exposure of DNA to UV light from sunlight or tanning lamps can cause _____
1.expansion of trinucleotide repeats associated with degenerative disorders of the nervous system 2.thymine dimers, which interfere with DNA replication and cause cell death, mutation, and cancer 3.generation of free radicals that produce mutations in DNA 4.xeroderma pigmentosum
Succulent plants such as cacti or pineapple
A. tend to undergo substantial rates of photorespiration. B. are highly efficient at photosynthesis in cooler and wet environments. C. produce 4-carbon malate in the first step of carbon fixation. D. continually produce sugar, both day and night under hot, arid conditions. E. are C3 plants.
Which of the following characterizes the Domain Bacteria?
A) prokaryotic cells; ether linkages in phospholipids B) eukaryotic cells; ester linkages in phospholipids C) prokaryotic cells; ester linkages in phospholipids D) complex cellular structures E) multicellular
What level of protein structure, characterized by coils and folds, results from hydrogen bonding between carboxyl and amino groups of the polypeptide chain?
A. primary B. secondary C. tertiary D. quaternary E. both secondary and quaternary