The diagram shows a family tree. The grandfather, individual 1, carries a recessive allele on his X chromosome. Which other individuals could have inherited this allele? Answer: 12) D Individual…

One of the steps in the breakdown of glucose is the conversion of pyruvic acid, CH3COCO2H, into lactic acid, CH3CH(OH)CO2H. This is an example of. Answer: 11) B Counting the…

The diagram shows two sets of parallel lines. Angles θ, α, β and γ are as marked. Which of the following statements are true? (shade all that apply). Answer: 10)…

A ball is thrown vertically upwards and leaves the thrower’s hand with a speed of 12m/s.Calculate the height to which it rises. You may assume that all of the initial…

The table shows some properties of five substances A - E. From the substances in the table, select the substances that could be: Answer: 7) E, B, A and C…

The diagram shows a section through the thorax. When breathing out (expiring), what happens to the muscles at X and Y and the pressure at Z? Answer: 6) E The…

During the electrolysis of hydrochloric acid, positively charged hydrogen ions move towardsthe cathode at a rate of 1018 ions per second. Negatively charged chloride ions movetowards the anode at the…

The diagram shows a simplified version of the brake pedal of a car. A driver applies a force of 60N to the pedal. What force is applied to the piston?…

The equation summarises the reaction of copper and dilute nitric acid.qCu + rHNO3 → sCu(NO3)2 + 6H2O + tNO2What values of q, r, s and t are needed to balance…

The right-angled triangle shown has horizontal and vertical sides measuring (4 + √2) cm and(2 - √2) cm respectively. Calculate the area of the triangle. Answer: 2) B Area of…