The following statements relate to typical nuclear division in human cells:1 mitosis results in variation within the species2 meiosis results in the production of genetically identical cells3 mitosis results in…
Simplify:3x(3x⁻⅓)³ Answer: 4) C 3x(3x⁻⅓)³ 3x(3³ x⁻³⁄₃) 3x(27x⁻¹) 3x (27/x) 3 x 27 = 81
Two identical cars, P and Q, start at the same level. Car P moves at a constant speed of 10m/s up a hill to a height of 25m in a…
A metal, X, is in group III of the periodic table. A non-metal, Y, is in group VI of the periodic table. They react together to form a compound. What…
Which word or statement does not correctly fit into one of the gaps left in the table? Answer: 1) F A – insulin can fit in the pancreas row. B…
Taking the speed of sound in air as 300 m/s and in steel as 4800 m/s. A worker lies next to a railway line and hears the whistle of a…
A sample of an alkali XOH of mass 2.8 g was dissolved in water. This solution was neutralised by 12.5 cm3 of sulphuric acid of concentration 2.0 mol dm-3.2 XOH…
Red-green colour blindness is a condition caused by a recessive allele. The gene is carried on the X chromosome. A man is red-green colour blind, which of his relatives must…
A quadratic equation has solutions a and b.a + b = -5 ab = 3What is the equation? Answer: 24) A (x = a) and (x = b)x – a…
A lorry of mass m, and travelling initially at speed v along a horizontal road, is brought to rest by an average braking force F in time t. Ignoring any…