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RNA contains which of the following nitrogenous bases?
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7. DNA and Chromosome Structure
RNA
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Which of the following lists the three major types of RNA found in cells?
A
mRNA, tRNA, rRNA
B
Codon, anticodon, promoter
C
DNA polymerase, RNA polymerase, helicase
D
Adenine, thymine, cytosine
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Understand that the question asks for the three major types of RNA found in cells, which are involved in the process of gene expression.
Recall that mRNA (messenger RNA) carries the genetic code from DNA to the ribosome for protein synthesis.
Recognize that tRNA (transfer RNA) brings amino acids to the ribosome and matches them to the coded mRNA message via its anticodon.
Know that rRNA (ribosomal RNA) is a structural and catalytic component of ribosomes, where proteins are assembled.
Eliminate other options that list DNA elements, enzymes, or nucleotide bases, as these are not types of RNA.
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