Which variable is least likely to contribute to the species that appear in a community during succession?
a. Number of available nesting sites
b. Climate
c. Altitude
d. Average temperature
e. Soil type
a
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The primary difference between enhancers and promoter-proximal elements is that enhancers _____
A) are transcription factors; promoter-proximal elements are DNA sequences B) enhance transcription; promoter-proximal elements inhibit transcription C) are at considerable distances from the promoter; promoter-proximal elements are close to the promoter D) are DNA sequences; promoter-proximal elements are proteins
If you were asked to build a model of a nucleotide, what structures would you need to represent in the model?
A. phosphate group B. base C. ribose sugar D. codon E. methyl group F. five carbon sugar
In E. coli, the genes for utilization of maltose are at various locations across the chromosome but are activated by the same maltose activator protein. This is an example of a(n)
a. operon. b. regulon. c. riboswitch. d. two-component regulatory system.
The root zone of maturation is immediately above the root apical meristem (RAM).
Answer the following statement true (T) or false (F)