Here are five statements about natural selection:1 Individuals within a species show variation.2 Individuals within a species compete with each other for, among other things, resources.3 Individuals with advantageous adaptations…
The graph shows oxygen supply and demand in muscle cells during exercise Which statement correctly describes what is happening in the muscle cells between 0 and 11 minutes? Answer: 9)…
Which one of the following correctly completes the statement: During the process of evolution, natural selection will favour individuals with… Answer: 9) B A – WrongA gene pool consists of…
Which changes to the conditions will increase the yield of the salt in the exothermic reaction shown? Answer: 9) B Firstly, catalysts do not affect the equilibrium position and so,…
Two variables are connected by the relation: A∝ 1/B2 B is increased by 40%. Describe the change in A in percentage terms Answer: 9) C Increase by 40% = 140%…
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…
Ammonia is manufactured from the reaction between nitrogen and hydrogen.N2 + 3H2 ⇌ 2NH3What is the maximum mass of ammonia that can be obtained from a mixture of 56g ofnitrogen…