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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

8.4.12 Genetic Fingerprinting – Unit exam questions

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  • Questions count: 12
  • Passing grade: B+
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1.
Which statement best describes Splicing?
Removal of introns and joining of exons in pre-mRNA to form mature mRNA.
Heritable changes in gene expression that do not involve changes to the DNA base sequence.
A group of prokaryotic genes under the control of one promoter and operator, transcribed together.
A protein that binds to DNA near a gene and increases or decreases its transcription.
2.
What happens in the annealing step of PCR?
Strands separate
Primers bind to complementary sequences
Nucleotides are added
DNA is cut
3.
A mutation in DNA results in no change to the sequence of the protein that is produced. The mutation is MOST LIKELY a
SAT Biology - Question 091
A
B
C
D
E
4.
Which statement best describes Human Genome Project?
Agreeing to a test after understanding fully what it can and cannot reveal.
All the DNA in a human cell — about 3 billion base pairs and roughly 20,000 genes.
The international effort that read the whole human sequence, completed in 2003.
Using computers to store, compare and analyse biological sequence data.
5.
Which statement best describes Recombinant DNA?
Separating DNA fragments by size using an electric field.
A small circular DNA loop in bacteria, used as a vector to carry a gene.
DNA combining sequences from more than one source.
Directly changing an organism's DNA, often by inserting a gene from another species.
6.

The specificity of an enzyme is due to

its size
its solubility
the shape of its active site, determined by its tertiary structure
its primary structure only
7.
Which statement best describes DNA sequencing?
Determining the order of nucleotide bases in a DNA molecule.
The use of computers to store, compare and analyse large biological data sets such as genome sequences.
Comparing the pattern of variable DNA regions (e.g. short tandem repeats) between individuals.
A technique that separates DNA fragments by size as they move through a gel in an electric field.
8.
Which of the following is an incorrect statement about gel electrophoresis?
Which of the following is an incorrect statement about gel electrophoresis?
DNA migrates from positive charge to negative charge.
Smaller DNA travels faster.
The DNA migrates only when the current is running.
The longer the current runs, the farther the DNA travels.
9.
Which fragments travel furthest in a gel?
The smallest
The largest
Those with most G-C pairs
All travel equally
10.
Which statement best describes Restriction enzyme?
Which statement best describes Restriction enzyme?
Cuts DNA at specific sequences.
Bacteria take up foreign DNA.
Organism with altered genes.
Separates DNA by size; small moves farther.
11.

Vectors used in gene therapy include

antibiotics
viruses and liposomes
ribosomes
antibodies
12.
Using DNA and protein sequences to work out relationships is molecular _____.
genetics only
ecology
systematics
taxonomy of colour
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Part of 8. The Control of Gene Expression (A Level only) — see every lesson and quiz in this unit.
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