Molecular Genetics Test

What is the name of this enzyme?

• DNA Helicase

• DNA Ligase

• DNA polyermase

• RNA Polymerase

Tags

NGSS.HS-LS3-1

In this model of DNA synthesis, one strand of DNA is used as a template to create a new strand of DNA. What is the name for this model of DNA synthesis?

• Elongated

• Semi-Conservative

• Separated

• Conservative

Matthew and Bradley were arguing about the inheritance of lactose intolerance. Bradley believes that lactose intolerance is determined by our DNA, like the molecule shown below. However, Matthew argues that the molecule shown is actually RNA because it still contains a copy of the genetic code. Who is correct, and why?

• Both Matthew and Bradley were wrong as this is not DNA or RNA.

• There is not enough information in the picture to conclude who was right.

• Matthew was right because RNA is single-stranded while DNA is double-stranded.

• Bradley was right because DNA is single-stranded while RNA is double-stranded.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Identify the correct sequence of molecules in the process of making proteins (central dogma of biology).

• DNA -> messenger RNA -> transfer RNA -> protein

• DNA -> transfer RNA -> messenger RNA -> protein

• DNA -> transfer RNA -> protein -> messenger RNA

• Protein -> messenger RNA -> transfer RNA -> DNA

Tags

NGSS.HS-LS1-1

Which is an accurate description of the process of translation?

• Transfer RNA molecules carry the messenger RNA to the ribosome.

• Ribosomes go into the nucleus to read off the genes in the DNA.

• It takes one DNA base to code for three amino acids in a protein.

• Transfer RNA delivers specific amino acids to the ribosome, matching messenger RNA codons.

An mRNA strand has the letters AUG CUG UGA. Which amino acids will result?

• Valine - Valine - Alanine

• Methionine - Arginine - Stop

• Methionine - Leucine - Stop

• Serine - Arginine - Proline

Tags

NGSS.HS-LS1-1

Deoxyribonucleic acid (DNA) is the genetic material found in all living organisms. It contains the instructions for all the traits that an organism demonstrates. DNA contains the instructions to make which macromolecule listed below?

• Carbohydrates

• Proteins

• Lipids

• Monosaccharides

Tags

NGSS.HS-LS1-1

If the mRNA codon is AUG, what amino acid be added to the growing polypeptide?

• Met

• Glu

• Ala

• Phe

If the mRNA codon is AUG, what amino acid would the tRNA bring?

• Met

• GLu

• Ala

• Phe

Which molecule carries the genetic code from the DNA in the nucleus to the ribosome in the cytoplasm?

• A) DNA

• B) Messenger RNA (mRNA)

• C) Transfer RNA (tRNA)

• D) Ribosomal RNA (rRNA)