Ribosomes and Protein Synthesis

The central dogma of biology states that information flows in one direction from 

• nuclei to RNA to cytoplasm
• ribosomes to proteins to DNA
• genes to nuclei to ribosomes
• DNA to RNA to proteins

The main function of tRNA is to...

• carry a message that, when translated, forms proteins
• form a portion of ribosomes
• string together complementary RNA and DNA strands
• bring amino acids from the cytoplasm to the ribosomes

Which of the following events occurs directly after RNA polymerase recognizes a gene?

• The polymerase strings amino acids into a polypeptide
• Free-floating nucleotides pair up with exposed DNA bases
• A complementary RNA strand detaches itself from the DNA
• The DNA strand begins to unwind, separating the two strands

What enzyme does replication and which enzyme does transcription?

• DNA polymerase and RNA Polymerase

• Ribosome and polymers

• Helicase and dogma

• Replicase and Transcriptase

What is the term for a three-nucleotide sequence that codes for an amino acid?

• base
• codon
• amine
• serine

Which phrase best describes translation?

• converts mRNA into a polypeptide
• catalyzes bonds between amino acids
• produces RNA from DNA molecules
• recycles tRNA molecules for reuse

Which of the following is the site of transcription?

• vacuole
• lysosome
• nucleus
• ribosome

Which of the following is the site of translation?

• vacuole
• lysosome
• nucleus
• ribosome

Which of the following is created in the nucleus and carries the genetic code to the cytoplasm?

• DNA
• tRNA
• mRNA
• rRNA

A tRNA that carries the amino acid methionine pairs with which type of codon?

• serine codon
• tRNA codon
• start codon
• anticodon