Which of these is designed by researchers to test only a single prediction of a hypothesis at a time?
a. controlled experiment
b. experimental variable
c. control group
d. controlled variable
e. experimental constant
ANSWER: a
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Biochemical tests are used to determine
A. nucleic acid-base composition. B. enzymatic activities. C. amino acid sequences. D. staining characteristics. E. All of the answers are correct.
____ plants do not develop aerial parts that are composed of lignin
a. Herbaceous b. Woody c. Deciduous d. Evergreen e. Shrub
The region of an enzyme to which a substrate binds is called the ________ site
A) active B) substrate C) enzymatic D) inactive
Cycle of reactions in mitochondria that begins with citric acid. This cycle breaks down an acetyl group and produces CO2, ATP, NADH, and FADH2; also called the Krebs cycle.
What will be an ideal response?