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Course: AQA A Level Biology 7402
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AQA A Level Biology 7402

1. Biological Molecules

0/102

2. Cell Structure

0/95

3. Exchange and Transport

0/98

4. Genetics, Variation and Interdependence

0/94

5. Energy Transfers In and Between Organisms (A Level only)

0/63

6. Organisms Respond to Changes in their Environments (A Level only)

0/93

7. Genetics, Populations, Evolution and Ecosystems (A Level only)

0/55

8. The Control of Gene Expression (A Level only)

0/72

9. Exam Guidance and Skills

0/38
Quiz

1.5.3 RNA- Structure and Function – Exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.
Which statement best describes RNA polymerase?
Which statement best describes RNA polymerase?
Different exon combinations → different proteins.
Coding region kept.
Builds RNA 5′→3′ from a template strand.
Protect mRNA and help export.
2.
Which base is found in RNA but not in DNA?
Thymine
Uracil
Adenine
Cytosine
3.
RNA polymerase binds first to the
terminator
start codon
promoter
ribosome
4.
Which of the following is an improper pairing of DNA or RNA nucleotides?
Which of the following is an improper pairing of DNA or RNA nucleotides?
Thymine-adenine
Guanine-thymine
Uracil-adenine
Guanine-cytosine
Pyrimidine-purine
5.
Which of the following does not occur during RNA processing in the nucleus of eukaryotes?
Which of the following does not occur during RNA processing in the nucleus of eukaryotes?
The removal of introns from the RNA molecule
The addition of a string of adenine nucleotides to the 3 end
The addition of a guanine cap to the 5 end
The ligation of exons of the RNA molecule
The addition of methyl groups to certain nucleotides of the RNA molecules
6.
Protein that prevents the binding of RNA polymerase to the promoter site.
Protein that prevents the binding of RNA polymerase to the promoter site.
Enhancer
Repressor
Operator
Promoter
7.
Based on the DNA diagram, in which direction would RNA polymerase move? (see the figure)
Based on the DNA diagram, in which direction would RNA polymerase move? (see the figure)
3 to 5 along the template strand
3 to 5 along the complementary strand
5 to 3 along the template strand
5 to 3 along the complementary strand
8.
According to the comparison table in this lesson, what is the RNA of Types?
According to the comparison table in this lesson, what is the RNA of Types?
DNA vs RNA
mRNA, tRNA, rRNA
Single
A, U, C, G
Ribose
9.
Which statement best describes Pyrimidine?
Which statement best describes Pyrimidine?
A and G (two rings).
C, T, U (one ring).
Two antiparallel strands twisted together.
Protein around which eukaryotic DNA wraps.
10.
According to the comparison table in this lesson, what is the Prokaryotes of Histones?
According to the comparison table in this lesson, what is the Prokaryotes of Histones?
Genome organisation
Circular
Rare
No
Nucleoid
11.
Which step comes first in the sequence covered in this lesson?
Which step comes first in the sequence covered in this lesson?
Double helix
Chromosome
Nucleotides
Base pairing A–T, C–G
12.
Which key term matches this description: "Two antiparallel strands twisted together."
Which key term matches this description: "Two antiparallel strands twisted together."
Nucleotide
Double helix
Purine
Histone
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Part of 1. Biological Molecules — see every lesson and quiz in this unit.
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