In order to verify a hypothesis, scientists ____
a. perform experiments and/or make observations
b. consider facts
c. establish law
d. develop theories
e. make predictions
ANSWER: a
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A signaling molecule that binds a membrane protein is called a ____
Fill in the blank with the appropriate word.
The subunits of proteins are ________
a. monosaccharides b. nucleotides c. amino acids d. fatty acids
Evergreen trees are found in
a. the Southeastern U.S. b. temperate lowlands in the U.S. c. the taiga. d. the boreal forests. e. all of these.
Computer programs can scan DNA sequences and identify potential genes, which may or may not be functional genes. A functional gene must
a. share an exon with another functional gene. b. result in a mutant phenotype if its sequence is mutated. c. have an open reading frame. d. be expressed in all cell types of the organism. e. have a functional ortholog in another species.