Which of the following is true regarding carboxylic anhydrides and phosphoric anhydrides?
A) Both carboxylic anhydrides and phosphoric anhydrides have important biological functions.
B) Neither carboxylic anhydrides nor phosphoric anhydrides have important biological functions.
C) Carboxylic anhydrides are not important in biochemistry but phosphoric anhydrides are important in biochemistry.
D) Phosphoric anhydrides are not important in biochemistry but carboxylic anhydrides are important in biochemistry.
C
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The Precambrian basement rocks of the Upper Peninsula of Michigan became part of the North American continent
A) more than 2.5 billion years ago. B) 1.9 billion years ago. C) 1.8 to 1.9 billion years ago. D) 1.7 to 1.8 billion years ago. E) about 1.1 billion years ago.
The diagram below reminds us that
A) ecosystem structures tend to occur on land and ecosystem functions tend to occur on water.
B) ecosystem functions are dynamic processes that support the ecosystem.
C) ecosystem structures and functions are largely the same in most ecosystems.
D) ecosystem functions occur on long time periods.
Which waves indicate the most extensive shadow? Why?
A) P waves—because they cannot travel through the liquid outer core B) P waves—because they cannot travel through the solid inner core C) S waves—because they cannot travel through the liquid outer core D) S waves—because they cannot travel through the solid inner core
The most common measure of wealth and poverty internationally is Gross Domestic Product
Indicate whether the statement is true or false