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KS3 DNA
Test Description: DNA revision
Instructions: Answer all questions to get your test result.
1) Who produced the first X-ray pictures of DNA?
A
Franklin
B
Parker
C
Crick
D
Watson
2) Which of these is smallest?
A
Gene
B
Genome
C
Chromosome
D
Cell
3) Where are chromosomes found?
A
In the cytoplasm
B
In the membrane
C
In the mitochondria
D
In the nucleus
4) Which two scientists discovered the shape of DNA?
A
Frankin and Wilkins
B
Darwin and Lamarck
C
Watson and Crick
D
Darwin and Wallace
5) What shape is DNA?
A
Spherical
B
X-shaped
C
Triple helix
D
Double helix
6) Which scientist did not win the Nobel prize for their work on DNA?
A
Franklin
B
Watson
C
Jenner
D
Wilkins
7) How many chromosomes do normal body cells have?
A
46
B
23 pairs
C
46 pairs
D
23
8) How many chromosomes do sperm and eggs have?
A
23 pairs
B
46 pairs
C
46
D
23
9) What is the definition of a gene?
A
A section of DNA that gives a characteristic
B
One whole chromosome
C
A coiled-up, x-shaped section of DNA
D
One copy of all our DNA
10) How many genes do we have?
A
23
B
Around 100,000
C
Around 20,000
D
23 pairs
*select an answer for all questions
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