If adenine makes up 20% of the bases in a DNA double helix, what percent of the bases is guanine?

A) 60%
B) 40%
C) 20%
D) 30%


D

Biology & Microbiology

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Continental drift affects

1.climate. 2.extent of glaciations. 3.sea levels. 4.evolution. 5.All of the choices are correct.

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Galactose is absent, but you find active transcription of the GAL genes. Which protein is likely mutated or absent to allow for constitutive transcription of the GAL genes?

A) Gal2 B) Mig1 C) Gal4 D) Gal10 E) Gal80

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In a food chain, primary consumers occupy the first trophic level

____________________ Indicate whether the statement is true or false.

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Which of the following is NOT primarily a sexually transmitted infection (STI)?

A) lymphogranuloma venereum B) genital herpes C) gonorrhea D) chancroid E) trichomoniasis

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