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