The majority of precipitation reaching land is derived from evaporation of oceanic waters
Indicate whether the statement is true or false
TRUE
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Which structure selectively regulates the transport of substances into and out of a plant cell?
A. The chloroplast B. The nucleus C. The cell wall D. The plasma membrane
In the figure above, which is the template strand?
A) a B) b C) c D) d
Enzymes work with at least three mechanisms. Which of the following is not a mechanism by which enzymes function?
a. putting reactants in close proximity to each other b. altering the free energy (?G) of the reaction c. altering the immediate environment of the reactants to promote reactant interactions d. orienting the reactants so they are positioned to favor the transition state
Which of these would be considered a cis-regulatory element for a gene?
A. Methylation of DNA preventing transcription B. A region of DNA sequence upstream of a gene where transcription factors bind C. A DNA binding protein that functions to repress transcription D. A protein that binds to an enhancer to activate gene expression E. a ribosome that translates a mRNA sequence to produce a transcription factor