In general, control groups should be _____.
A) more fit than the experimental group
B) older than the experimental group
C) as similar as possible to the experimental group
D) more diverse than the experimental group
Answer: C) as similar as possible to the experimental group
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Two 6-base sequences are present in bacterial promoters: TATAAT (located 10 nt upstream from the start site) and TTGACA (located 35 nt upstream from the start site). What is the significance of the fact that these two base sequences are different?
A. Binding sites for both the holoenzyme and ATP are provided. B. Both the location of the start site and the direction of transcription can be established. C. Binding sites for both the core polymerase and holoenzyme are provided. D. The transcription bubble can be properly formed. E. It allows RNA polymerase to distinguish between the template strand and the coding strand of the DNA molecule.
Based on the FUNCTIONAL characteristics of the Cyanobacteria and Proteobacteria phyla, which phylum do you think is more deeply rooted in the tree of life (i.e. which phylum branches off closer to the last universal common ancestor)?
Use at least two pieces of evidence to support your answer. How could you test your hypothesis? What will be an ideal response?
Proteins that function as a catalyst
A) slow down the speed at which chemical reactions occur but do not alter the final products formed. B) facilitate chemical reactions by altering the final products formed. C) maintain primary structure. D) can participate only in reactions that synthesize new products. E) are referred to as enzymes.
According to the Centers of Disease Control and Prevention, how many people die from an antibiotic-resistant infection each year?
A. 2 million B. at least 23,000 C. at least 2,300 D. about 2 million people suffer from antibiotic-resistant infections, but no deaths have been recorded. E. 200,000