How many square metres are there in a hectare?
a) Ten thousand
b) One hundred
c) One thousand
a) Ten thousand
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15
Which of these isn't an essential aminoacid?
a) Lysine
b) Thryptophan
c) Riboflavin
c) Riboflavin
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15
What does a light-year measure?
a) Brightness
b) Time
c) Distance
c) Distance
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15
What is the chemical symbol for the element mercury?
a) Hg
b) Mg
c) Me
a) Hg
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15
What connects bones to other bones?
Select one:
a) cartilage
b) tendons
c) ligaments
c) ligaments
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15
The green pigment in plants that is capable of absorbing the sun's energy is
a) Porphyrin
b) Beta carotene
c) Chlorophyll
c) Chlorophyll
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15
What does 3 squared equal?
a) 6
b) 12
c) 9
c) 9
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15
What is it called when light changes direction after leaving a lens?
a) Reflection
b) Refraction
c) Diffraction
b) Refraction
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15
Which of these is the main way that ocean tides are created?
a) The rotation of the Earth on its axis
b) The gravitational pull of the moon
c) The gravitational pull of the sun
b) The gravitational pull of the moon
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15
What is the scientific term for peeling skin?
a) Desquamation
b) Dermatitis
c) Exfoliation
a) Desquamation
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15
The โPascalโ is a unit measurement of what?
a) Pressure
b) Weight
c) Temperature
a) Pressure
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15
Organic chemistry is the study of compounds that contain what element?
a) Nitrogen
b) Potassium
c) Carbon
c) Carbon
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15
The hardest substance available on earth is
a) Diamond
b) Platinum
c) Rocks