HW Quiz: DNA, RNA, Transcription, Translation

Answer A

Answer B

 

Answer C

 

Answer D

 

Answer D

1. CATCCTAGCGACTAT

 

2. CTATACGACATAGCC

 

3. AAATGCATACATCTT

 

4. CCCGCATCGCCATCG

4. CCCGCATCGCCATCG

Imagine that the value of a nucleotide is calculated as the percent of DNA it accounts for. For example, 30% of DNA may be A. If this were the case, the value of (A + C)/(G + T)...  Select only ONE answer choice.

1. is equal to one if the DNA is single-stranded.

2. is equal to one if the DNA is double-stranded.

3. is less than one if the DNA is double stranded.

4. is greater than 1 if the DNA is double stranded.

5. impossible to determine without more information

 

2. is equal to one if the DNA is double-stranded.

Since the two strands of the DNA molecule are complementary, for any given gene: Select ALL that are correct.

 

1. Only one strand actually carries the codons for a particular gene.

 

2. If one strand is mutated, the cell can use the other strand to correct the change (assuming the cell can identify which of the complementary bases was recently modified).

 

3. A gene transcribed in the 5’ to 3’ direction on one strand can be transcribed in the 3’ to 5’ direction on the other strand.

1. Only one strand actually carries the codons for a particular gene.

 

2. If one strand is mutated, the cell can use the other strand to correct the change (assuming the cell can identify which of the complementary bases was recently modified).

Answer A

Answer B

Answer C

Answer D

Answer E

Answer C

5’ – UUG CCU GAC CGU – 3’

 

5’ – UGA UGC AAG CAG UCC CGU UAC GUU – 3’

 

5’ – UUG CAU UGC CCU GAC GAA CGU AGU – 3’

 

5’ – UGC CAG UCC GUU – 3’

 

None of the above are correct

5’ – UGC CAG UCC GUU – 3’

The nucleotide sequence listed below represents the TEMPLATE STRAND of a gene (assume traditional start codon, no introns).

3' TACAGAAGTTGATGCATC 5'

Which of the following is the peptide that is produced when the mRNA is translated? The standard 3-letter abbreviations for amino acids are used. Select only ONE answer choice. 

 

Tyr Arg Ser

 

Asp Ser Thr Ser Asp Asp

 

Asp Ser Thr Ser Asp Asp

 

Met Ser Ser Thr Thr

 

Met Ser Ser Thr Thr

A possible sequence of nucleotides in the CODING STRAND of DNA that would code for the polypeptide sequence phe-leu-ile-val would be: Select only ONE answer choice.

 

5ʹ TTT - CTT - ATC - GTA - TAA 3ʹ

 

3ʹ TTT - CTT - ATC - GTA - TAA 5ʹ

 

5ʹ AAA - GAA - TAG - CAT - ATT 3’

 

3ʹ AAA - GAA - TAG - CAT - ATT 5’

 

5ʹ TTT - CTT - ATC - GTA - TAA 3ʹ

 

18, 18

 

18, 19

 

7, 9

 

8, 8

8, 8

True or False: Genes code for chromosomes and chromosomes are responsible for the individual traits we observe.

 

True

 

False

False

W, Z

 

X, Y

 

W, X

 

Y, Z

 

Z, W

 

W, X

A

 

B

 

C

 

D

 

None of the above

A

 

Top

 

Bottom

 

Either can serve as the codong strand

 

There isn’t enough information to determine which is the coding strand

Top

Given the coding strand of DNA below, choose the correct RNA transcript.

5’ – ATGGCATTAGGGCGTTGA – 3’

 

5’ – TACCGTAATCCCGCAACT – 3’

 

5’ – UACCGUAAUCCCGCAACU – 3’

 

5’ – AUGGCAUUAGGGCGUUGA – 3’

 

None of the above are correct.

5’ – AUGGCAUUAGGGCGUUGA – 3’

Met-Leu-Lys-Met-Pro-Arg

 

Met-Leu-Lys-Met-Pro

 

Met-Leu-Lys-Met-Pro-stop-Arg

 

Met-Pro

 

Pro-Met-Lys-Leu-Met

 

Met-Leu-Lys-Met-Pro

Which of the following is NOT a difference between DNA and RNA? Select only ONE answer choice.

 

DNA is double-stranded while RNA is single-stranded

 

RNA includes Uracil while DNA includes Thymine

 

DNA has the sugar deoxyribose while RNA has the the sugar ribose

 

All of the above are differences between RNA and DNA

 

All of the above are differences between RNA and DNA

Correctly match these components and terms relating to DNA replication

Helicase

Topoisomerase

DNA Polymerase

RNA primer

Ligase

Single-strand binding protein

Origin of replication

Leading strand

Lagging strand

Helicase (This protein separates the strands of the parental double jelix at the replication fork)

Topoisomerase (This protein relives stress on the double helix that results from unwinding)

DNA Polymerase (The growth of new DNA strands (Polymerization) is catalyzed by this protein)

RNA primer (This is needed to begin synthesis on a new strand of DNA and briefly the growing strand has pieces of RNA in it)

Ligase (This enzyme joins the DNA fragments in the lagging strand. It also joins up multiple sections of replicating DNA within the chromosome)

Single-strand binding protein (This protein binds to the single-stranded regions to prevent the templates strands from re-connecting)

Origin of replication (Each point at which DNA synthesis is initiated is called an..)

Leading strand (During replication, this strand is replicated continouosly)

Lagging strand (During replication, this strand is replicated in a discontinuous manner - with Okaazaki fragments)