A(n) ____________________ is an enclosed coastal region where seawater mixes with nutrient-rich fresh water from
rivers and streams. Fill in the blank(s) with the appropriate word(s).
ANSWER: estuary
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If you were given a bacterial strain with a mutation in the promoter region of the trp operon the most likely effect would be
A. interference with RNA polymerase binding. B. to block the repressor from binding. C. derepression of the trp operon. D. enabling the trp operon to be expressed in the absence of tryptophan. E. lack of expression of just the first gene in the operon. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about promoters? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
True or false: The developing fetus is most vulnerable to toxins, drugs, and infections during the first trimester of pregnancy because all of the basic structures and organ systems develop during this time
A. true B. false
Which of the following determines whether or not a wine is considered to be dry?
A. The percentage of alcohol after fermentation B. The amount of free sugar after fermentation C. The type of grape used as a starting material D. The amount of carbon dioxide after fermentation
Which of the following organelles oxidizes toxic substances such as alcohol, and breaks down other potentially harmful by-products of metabolism?
a) lysosomes b) peroxisomes c) mitochondria d) proteasomes e) ribosomes