Some ___ have enzymes to break the bonds of atmospheric nitrogen and use it for the metabolism of proteins and
other nitrogen containing molecules.
a. fungi
b. bacteria
c. plants
d. protists
e. animals
ANSWER: b
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If you put some water in a bucket and left it in your backyard, the water level would rise and fall over time with the weather. The table represents data collected from a bucket that was initially filled to the halfway mark with water. The water depth was measured on the last day of the month for 2 years. Although the water never completely dried up, it also never overflowed during this time. Answer the following question(s) based on the data.MonthWater Level (cm)MonthWater Level (cm)130133822414393201537424164852617486291849735195582820459312147103422501138235512372451Which statement most likely explains the general upward trend of the data over the 2-year time period?
A. Evaporation exceeded transpiration. B. Precipitation exceeded evaporation. C. Transpiration exceeded precipitation. D. None of these statements explains the upward trend.
The sum total of all the chemical reactions that occur in organisms is called ________
A) hydrolysis B) cellular synthesis C) conservation of energy D) metabolism
The idea that organisms with genetically determined characteristics that make them better suited for the environment will have more surviving offspring is
A. the inheritance of acquired characteristics. B. the Hardy-Weinberg concept. C. the theory of natural selection. D. convergent evolution.
In a chemical reaction, glyceraldehyde-3-phosphate + NAD+ yields 1,3-bisphosphoglycerate + NADH. In this reaction, what happened to NAD+?
A. It served as an enzyme to catalyze the reaction, and at the end of the reaction formed NADH B. It was oxidized to form NADH C. It was activated to form NADH D. It was reduced to form NADH