Question

a sequence of three bases that codes for an amino acid

1. if a student constructs a model for the process of translation, the final product will be represented by which of the following?

a messenger rna
b a polypeptide chain
c codons
d nucleotides

1. amino acids bond together to form polypeptides, and polypeptides bond together to form proteins. which of the following determines each amino acid to be assembled in a molecule of protein?

a the sequence of bases on the entire strand of dna determines one amino acid.
b the sequence of genes along a strand of dna determines one amino acid.
c the sequence of three bases on a section of dna determines one amino acid.
d the sequence of chromosome arrangement in a cell determines each amino acid.

1. why does the information in dna have to be copied onto rna?

a dna is unable to leave the nucleus.
b there are three different types of rna.
c dna doesnt contain uracil.
d rna contains ribose sugar.

1. which of the following describes the role of trna in protein synthesis?

a it transcribes the code from the dna template in the nucleus.
b it carries amino acids to ribosomes during translation.
c it facilitates the replication of dna before protein synthesis can begin.
d it reads mrna anticodons.
maap-eoc biology i
© 2020 jerald d. duncan
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Explanation:

1. Translation is the process where mRNA is decoded to build a polypeptide chain, which is the final product of this process.
2. A codon (a sequence of 3 DNA bases) corresponds to one amino acid; the linear sequence of these base triplets in DNA determines the order of amino acids in a protein.
3. DNA is confined to the nucleus in eukaryotic cells, so its genetic information must be copied to mRNA (which can exit the nucleus) to be used for protein synthesis in the cytoplasm.
4. Transfer RNA (tRNA) transports specific amino acids to the ribosome during translation, where they are added to the growing polypeptide chain.

Answer:

1. B. a polypeptide chain
2. C. The sequence of three bases on a section of DNA determines one amino acid.
3. A. DNA is unable to leave the nucleus.
4. B. It carries amino acids to ribosomes during translation.