What is the correct order of transcriptional events occurring after RNA polymerase binds to the promoter?
A. start of RNA synthesis, open complex formation, closed complex formation, promoter clearance
B. closed complex formation, open complex formation, promoter clearance, start of RNA synthesis
C. closed complex formation, open complex formation, start of RNA synthesis, promoter clearance
D. open complex formation, closed complex formation, start of RNA synthesis, promoter clearance
E. open complex formation, closed complex formation, promoter clearance, start of RNA synthesis
C
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At the start of mitosis, how many centromeres are present in a human cell?
A. 12 B. 23 C. 46 D. 92
Which part of the seed is responsible for providing nutrition to the embryo?
A. Integument B. Endosperm C. Cotelydons D. Seed coat E. Procambium
The most accurate description of SPATIAL summation is
A. Several inputs from the SAME presynaptic cell arrive in rapid succession, summing into a larger depolarization that brings the neuron over the threshold for an action potential. B. Several inputs from DIFFERENT presynaptic cells create EPSPs that sum together to bring the neuron over the threshold for an action potential.
Given that people typically don't eat fruit seeds, humans play only a minor role in plant dispersal.
a. true b. false