Muchemi

1(a) The only correct answer is D (2-bromo-2-methylpropane) A is not correct because 1-bromobutane is a primary halogenoalkane so hydrolyses more slowly than the tertiary halogenoalkane B is not correct because 2-bromobutane is a secondary halogenoalkane so hydrolyses more slowly than the tertiary halogenoalkane C is not correct because 1-bromo-2-methylpropane is a primary halogenoalkane so hydrolyses more slowly than the tertiary halogenoalkane (1) Question Number Answer Mark 1(b) The...

1(a) An answer that makes reference to the following points: • first row correct • second row correct • third row correct (1) (1) (1) Species Number of protons Number of neutrons Number of electrons 32S 16 16 16 33S 16 17 16 34S2− 16 18 18 If no marks are scored, allow 1 mark for each correct column (3) Question Number Acceptable Answer Additional Guidance Mark 1(b)(i) • calculation of missing value Example of calculation (100 − 95.02 – 0.75 – 0.02 =) 4.2...

1(a) Knowledge 2, Application 2, Analysis 2, Evaluation 2 ● A private limited company is a business owned by shareholders that have limited liability. ● Vinted has raised €250m from selling additional shares to investors invited by existing shareholders to help fund expansions into new markets ● As Vinted is a private limited company it means existing shareholders control who can buy new shares in the business, increasing financial control and preventing a takeover from rivals, ...

1(a) Knowledge 1, Application 2, Analysis 1 Knowledge: 1 mark for • understanding of a mission statement e.g. a mission statement is a brief description of a business’ overall aim and strategic vision. or • identification of a relevant benefit of a mission statement, such as giving employees a common focus Application: up to 2 marks for • Vidsy selects specific creative teams from the 7,000 global digital creators • Brands such as Coca-Cola and L’Oreal understand Vidsy’...

1(a) Knowledge 1, Application 3 Quantitative skills assessed: QS 2 calculate, use and understand percentages and percentage changes QS 8 use and interpret quantitative and non-quantitative information in order to make decisions QS 9 interpret, apply and analyse information in written, graphical and numerical forms Knowledge: 1 mark for calculation of market share • Sales of one business/sales of whole market x 100 Application: up to 3 marks for • Market share of global shipments i...

1(a) An answer that makes reference to the following: • when a species {moves / spreads / grows} into a new area (1) ALLOW to immigrate into a (new) area ALLOW any term that indicates an area e.g. environment / habitat ALLOW other terms in place of species e.g. plant / animal / organism ALLOW pioneer species being first to live in an area IGNORE dominant species in an area / species outcompeting other species in an area (1) Question number Answer Additional guidance Mark 1(b) ...

The only correct answer is D - oxygen A is incorrect as R is not carbon B is incorrect as R is not hydrogen C is incorrect as R is not nitroge

The only correct answer is D 31874 kJm-2yr-1. (GPP-R) A is incorrect because it is sunlight-GPP B is incorrect because it is sunlight-GPP-R C is incorrect because it is GPP+R (1) Question Number Answer Additional guidance Mark 1(a)(ii) • correct values selected (1) • correct calculation of percentage light energy fixed as biomass (1) Example of calculation 4615 and 7112800 (4615 ÷ 7112800) x100 = 0.065% ALLOW one mark if 4615 divided by incorrect value and used to calculat...

An answer that includes the following • meristem (1) (1) Question Number Answer Additional Guidance Mark 1(b)(i) An answer that includes the following: • to {break down middle lamella / break down pectins / separate layers of cells} (1) Accept calcium pectate separate cells (1) Question Number Answer Additional Guidance Mark 1(b)(ii) An answer that includes the following: • to make the {chromosomes / DNA} visible (1) Accept to dye / colour the chromosomes / DNA (1) Question...

1(a)(i) The only correct answer is D (S) A is incorrect as P is the nucleus B is incorrect as Q is a mitochondrion C is incorrect as R is rER (1) Question Number Answer Mark 1(a)(ii) The only correct answer is C (R) A is incorrect as translation does not occur in P B is incorrect as translation does not occur in Q D is incorrect as translation does not occur in S