What piece of the ATP synthase contains the channel for H+ to flow through?
a. the basal unit
b. the headpiece
c. the stalk
d. the lollipop
e. the three catalytic sites
A
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In eukaryotes, general transcription factors _____
A) are required for the expression of specific protein-encoding genes B) bind to other proteins or to the TATA box C) inhibit RNA polymerase binding to the promoter and begin transcribing D) usually lead to a high level of transcription even without additional specific transcription factors E) bind to sequences just after the start site of transcription
When does gene expression occur?
a. when a gene is turned on to produce RNA b. when a gene is turned on to produce DNA c. when a gene is turned on to begin the cell cycle d. when a gene is turned on to begin the process of apoptosis
If the codon is CCA, what is the anticodon and what amino acid will be inserted?
A. ACC, threonine B. CCA, proline C. GGU, proline D. UGG, tryptophan E. GGT, glycine
Explain the composition and use of minimal medium in the study of bacterial genetics
What will be an ideal response?