Which of the following relationships about nucleotide composition in DNA is TRUE?
A. C+G=A+T
B. C+A=G+T
C. C=A
D. G=T
E. C=T
B. C+A=G+T
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What peptide would be synthesized from this mature mRNA sequence: (refer to figure on previous slide)
5' AUG CCA UUC UAA ACG 3'
1.methionine - proline - phenylalanine 2.proline - phenylalanine - tryptophan - threonine 3.proline - phenylalanine - threonine 4.methionine - proline - phenylalanine - tryptophan - threonineAll protists are _____.
A. eukaryotic B. unicellular C. monophyletic D. symbionts E. mixotrophic
A conservation group is deciding what land to preserve. Why might they want to consider an area of land where the ecosystem is partially damaged by a logging contract that cannot be overturned?
A. Conservation groups often focus of fixing damaged land and ecosystems. B. By making logging difficult, they strengthen environmentalism. C. When conservation groups choose land to preserve, they just consider what is best for the one target species that is endangered. D. Human activity often leads to the evolution of unique species that take advantage of the disrupted environment.
The following steps occur during multiplication of retroviruses. Which is the fourth step?
A) synthesis of double-stranded DNA B) synthesis of +RNA C) attachment D) penetration E) uncoating