How many square metres are there in a hectare? a) Ten thousand b) One hundred c) One thousand

True or False? It is the father’s gene that decides whether the baby is a boy or a girl.

Which of the following will increase in concentration in muscle cells during strenuous muscular activity? a) lactic acid b) carbon monoxide c) glucose

What is the scientific term for peeling skin? a) Desquamation b) Dermatitis c) Exfoliation

What percentage of animal species are invertebrates? a) About 50% b) About 95% c) About 90%

How many pairs of ribs does an adult human have? a) 10 b) 12 c) 8

The green pigment in plants that is capable of absorbing the sun's energy is a) Porphyrin b) Beta carotene c) Chlorophyll

Organic chemistry is the study of compounds that contain what element? a) Nitrogen b) Potassium c) Carbon

Which of these isn't an essential aminoacid? a) Lysine b) Thryptophan c) Riboflavin

What set of terms correctly represents an increasing order of complexity and size in living things? a) atom, molecule, organelle, organism, cell b) molecule, cell, tissue, organ, organism c) organelle, tissue, cell, organ, individual

What is the chemical symbol for the element mercury? a) Hg b) Mg c) Me

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