UNIT 6 mini quiz

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UNIT 6 mini quiz

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1. What are the two steps in reading the DNA code? check all that apply

1 point

transcription

translation

replication

mutation

2. Check all that apply about RNA polymerase

1 point

it's an enzyme

it "reads" DNA 3' to 5'

it assembles a mRNA

it assembles DNA

3. What mRNA would we make if we transcribed the following piece of DNA: 3' AAA GCT GTA 5'

1 point

5' UUU CGA CAU 3'

5' TTT CGA CAT 3'

3' UUU CGA CAU 5'

3' TTT CGA CAT 5'

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4. After mRNA is transcribed, where does the mRNA go?

1 point

it leaves the nucleus where is is translated

it remains in the nucleus and is transcribed again

nowhere...it stays put

it leaves the nucleus where it is replicated

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5. Check all that apply regarding RNA

1 point

has a sugar called ribose

has Uracil

has 1 strand

has Thymine

has two strands

has a sugar called deoxyribose

6. What are the 3 types of RNA? check all that apply

1 point

mRNA

rRNA

dRNA

tRNA

qRNA

7. Translation involves a ribosome reading 1 codon at a time on the mRNA. How many bases is big is a codon?

1 point

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8. If a tRNA has an anti-codon UUU, what would be the codon on the mRNA?

1 point

UUU

CCC

TTT

AAA

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9. Diagram 1 below, what overall process is being illustrated?

1 point

transcription

translation

replication

polymerization

dehydration synthesis

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10. IN the diagram below, what is letter B pointing to?

1 point

DNA

rRNA

tRNA

mRNA

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11. IN the diagram, what is letter c is pointing to?

1 point

RNA polymerase

DNA

mRNA

tRNA

ribosome

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12. An RNA sequence is shown below. AUGCCGAAACGU Which of the following statements describes how the RNA sequence specifies the production of an amino acid chain (protein)?

1 point

Each individual RNA base codes for the ribosome location where amino acids are assembled.

Each group of three RNA bases codes for a single amino acid.

Each individual RNA base codes for a single amino acid.

Each group of three RNA bases codes for an enzyme that helps join amino acids together.

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13. Using the diagram below (diagram 3), what portion of the protein molecule is coded for the the following mRNA? mRNA = CUC AAG UGC UUC

1 point

Val—Asp—Pro—His

Ser—Tyr—Arg—Gly

Leu—Lys—Cys—Phe

Pro—Glu—Leu—Val

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diagram #3

14. Ultraviolet (UV) radiation is damaging because it _____.

1 point

deactivates the enzymes needed for DNA replication

may cause mutations in DNA

prevents DNA transcription

prevents DNA translation

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15. The nucleotide sequence of DNA is GTA. A messenger RNA molecule with a complementary codon is transcribed from the DNA. In the process of protein synthesis, a transfer RNA pairs with the mRNA codon. What is the base sequence of the tRNA anticodon?

1 point

CAU

CUT

GTA

GUA

CAT

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16. Which of the following correctly ranks the structures in order of size, from LARGEST to SMALLEST?

0 points

nucleotide-codon-base-DNA

codon-nucleotide-base-DNA

DNA-nucleotide-codon-base

DNA-codon-nucleotide-base

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17. One human disease is caused by a substitution in one base in a gene from GAA to GCA. This disease is most likely the result of

1 point

translation

helicase failing to do its job

a mutation.

transcription

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18. A messenger RNA molecule for making a protein is made in the nucleus and sent out to a ribosome. The ribosome reads the mRNA and makes a protein containing 120 amino acids. The mRNA consisted of at least how many codons?

1 point

480

120

360

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