Scelta multipla
In RNA, thymine is replaced with which nitrogenous base?
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7. DNA and Chromosome Structure
RNA
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Which set correctly lists the three major types of RNA found in cells and their primary roles in gene expression?
A
DNA, mRNA, and tRNA are the three major RNA types and they all store genetic information long-term
B
rRNA carries codons, mRNA forms the ribosome, and tRNA catalyzes peptide bond formation
C
mRNA carries genetic information from DNA to ribosomes, rRNA forms the core of the ribosome, and tRNA delivers amino acids during translation
D
snRNA, siRNA, and miRNA are the three major RNA types and they directly synthesize proteins at ribosomes
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Identify the three major types of RNA involved in gene expression: messenger RNA (mRNA), ribosomal RNA (rRNA), and transfer RNA (tRNA).
Understand the primary role of mRNA: it carries the genetic code transcribed from DNA to the ribosome, where protein synthesis occurs.
Recognize the function of rRNA: it is a structural and catalytic component of the ribosome, helping to assemble amino acids into proteins.
Know the role of tRNA: it transports specific amino acids to the ribosome and matches them to the mRNA codons during translation.
Compare these roles to the options given and select the set that correctly matches mRNA, rRNA, and tRNA with their functions in gene expression.
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