Molecular Genetics Chapter Test 2024

The mcm6 gene codes for lactose intolerance. The first 10 bases in this gene are sequenced below. What does its complementary strand look like after DNA replication? GCA AAG CTG C

• CGU UUC GAC G
• GCA AAG CUG C
• GCA TAG CTG C
• CGT TTC GAC G

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-LS3-1

NGSS.HS-LS3-2

Transcription of the DNA sequence into RNA: AAG CTG GGA would result in which of the following?

• an mRNA strand with the sequence TTC GAC CCT
• an mRNA strand with the sequence UUC GAC CCU.
• a DNA strand with the base sequence TTC GAC CCT.
• a DNA strand with the base sequence UUC GAC CCU

In eukaryotic cells , which of the following is true?

• Transcription takes place in the cytoplasm, and translation takes place in the nucleus.
• Transcription takes place in the nucleus, and translation takes place in the cytoplasm.
• Transcription and translation both take place in the nucleus.
• Transcription and translation both take place in the cytoplasm.

Which of the following are found in both DNA and RNA?

• ribose, phosphate groups, and adenine
• deoxyribose, phosphate groups, and guanine
• phosphate groups, guanine, and cytosine
• phosphate groups, guanine, and thymine

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

If the mRNA message is AAC UAC UGC, what was the original DNA base sequence?

• AAC TAC TGC
• UUG AUG ACG
• TTG ATG ACG
• Asn- Tyr- Cys

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