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A Levels Biology Quiz on Transcription and translation, created by E P on 22/04/2015.

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Transcription and translation

Question 1 of 12

1

Which one comes first, Translation or transcription?

Select one of the following:

  • Transcription

  • Translation

Explanation

Question 2 of 12

1

What happens in transcription?

Select one of the following:

  • mRNA is made

  • tRNA is made

Explanation

Question 3 of 12

1

Fist stage of transcription- The Gene unwinds and unzips by dipping into the ...

Select one of the following:

  • Nucleus

  • Nucleolus

Explanation

Question 4 of 12

1

The hydrogen bonds break. 2nd stage- Activated RNA nucleotides bind to exposed complementary bases on the template strand. What does U, G and A bind with? (in order)

Select one of the following:

  • C , T , A

  • T , C, A

  • A , C, T

Explanation

Question 5 of 12

1

The process of complementary base pairing is catalysed by the enzyme...

Select one of the following:

  • RNA polymarise

  • RNA polymerase

Explanation

Question 6 of 12

1

Stage 3 of transcription) 2 extra phosphate groups are released, which releases energy for bonding ( ) nucleotides. (Fill in the missing word)

Select one of the following:

  • Opposite

  • Adjacent

  • Surrounding

Explanation

Question 7 of 12

1

The coding strand is what to the base sequence of the new mRNA?

Select one of the following:

  • A copy

  • Complementary

Explanation

Question 8 of 12

1

The last stage of transcription; the mRNA is released from the DNA through a pore in the...

Select one of the following:

  • Ribosome

  • Nuclear envelope

Explanation

Question 9 of 12

1

What is the first stage of translation?

Select one of the following:

  • mRNA binds to a tRNA, attached to the small subunit and is exposed to the large subunit.

  • mRNA binds to a ribosome, 3 codons are attached to the large subunit and are exposed to the small subunit.

  • mRNA binds to a ribosome, 2 codons attached to the small subunit and are exposed to the large subunit.

Explanation

Question 10 of 12

1

The first mRNA codon is always...

Select one of the following:

  • AUG

  • AUU

Explanation

Question 11 of 12

1

tRNA brings the anticodon, then a second tRNA brings a second anticodon. What bonds form between the two adjacent amino acids?

Select one of the following:

  • Covalent

  • polypeptide

  • peptide

  • Chemical

Explanation

Question 12 of 12

1

Ribose now moves along the mRNA reading the next codon. The polypeptide chain grows until something is reached. What is this something?

Select one of the following:

  • Stop anticodon

  • Stop codon

  • Stop amino acid

Explanation

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