ACP Review Day 4 TEKs 6C, 6E, 6G

A model of a biological process is shown. 

What is the purpose of the process?

• To replicate the DNA of an organism before cell division

• To assemble nucleotides in an mRNA chain along a DNA template

• To synthesize amino acids used to unzip strands of DNA and copy the genetic code

• To translate the genetic code into a specific sequence of amino acids

A sequence of a DNA template strand is 3’ TCC AAT GGC TTA TTT GCA 5’.

 

Which of these is the correct amino acid chain produced from the DNA template strand?

• Arginine - Leucine - Proline - Asparagine - Lysine -Arginine

• Arginine - Phenylalanine - Leucine - Glycine - Asparagine- Phenylalanine

• Serine - Leucine - Proline - Asparagine - Lysine - Arginine

• Tryptophan - Phenylalanine - Leucine - Glycine - Asparagine - Serine

Students are modeling mRNA during the process of protein synthesis.Which answer choice correctly describes the model of the mRNA strand being transcribed? 

• The mRNA strand is complementary to the DNA template strand; however, uracil instead of adenine is paired with thymine.

• The mRNA strand is an exact copy of the DNA template strand; however, uracil instead of adenine is paired with thymine.

• The mRNA strand is an exact copy of the DNA template strand; however, uracil instead of thymine is paired with thymine.

• The mRNA strand is complementary to the DNA template strand; however, uracil instead of thymine is paired with adenine.

Gametes produced by an organism contain a combination of genes from that organism. In every gamete, this combination is —

• the same because it is created from the same DNA

• the same because chromosomes are copied prior to meiosis

• different due to DNA replication prior to mitosis

• different due to independent assortment during meiosis

This question has two parts. First, answer Part A. Then, answer Part B. You must answer both Part A and Part B correctly to receive credit.Sickle-shaped red blood cells result from a mutation in the gene that codes for hemoglobin. This mutation results in sickle-cell anemia. A partial sequence of bases from a normal hemoglobin gene and a sequence that results in sickle-cell anemia are shown below.

What type of mutation is depicted in this sequence?

• Substitution

• Insertion

• Deletion

• Frameshift

Sickle-shaped red blood cells result from a mutation in the gene that codes for hemoglobin. This mutation results in sickle-cell anemia. A partial sequence of bases from a normal hemoglobin gene and a sequence that results in sickle-cell anemia are shown below. 

Which of the following describes the type of mutation depicted above?

• Occurs due to the deletion of several nucleotides

• Occurs due to the replacement of several nucleotides

• Occurs due to a single nucleotide replacement

• Occurs due to the rearrangement of a chromosome

During meiosis, homologous chromosomes exchange genetic material. Describe the outcome of this exchange of genetic material. Enter your answer in the space.

Which of these is the direct result of an error in the transcription of a DNA nucleotide?

• The nuclear membrane is ruptured.

• Amino acids do not bond to tRNA.

• A codon sequence is incorrect.

• Transportation of mRNA does not occur.

Which diagram illustrates how crossing-over contributes to genetic variation during meiosis? 

• 
• 
• 
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A model of transcription and a codon chart are shown. Which amino acid would be coded first from the DNA strand being transcribed?

• Cys

• Phe

• Ile

• Met