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Page 1

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Teacher/Lecturer .

Mark scheme for Topic 1 Exam-style topic test
General information
The following symbols are used in the mark schemes for all questions.

; semicolon ­ indicates the end of a marking point.
eq ­ indicates that credit should be given for other correct alternatives to a word…

Page 2

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Topic 1 Exam-style topic test Teacher/Lecturer
Change of lifestyle / change diet / have a low fat diet / reduced intake of cholesterol
/ do more exercise;
to reduce BMI / reduce risk of obesity / reduce risk of CVD;

Total 10 marks

Question 2
(a) Similarities: Both contain…

Page 3

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Topic 1 Exam-style topic test Teacher/Lecturer

Question 4
(a) Fibrinogen to fibrin;
Mesh of insoluble fibrin fibres forms;
Traps blood cells / forms a clot;
3 marks
(b) Speeds up clotting process;
More fibrinogen available to convert to fibrin;
Bandage forms part of clot so does not need to…

Page 4

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E2.00L


Teacher/Lecturer .

Mark scheme for Topic 2 Exam-style topic test
General information
The following symbols are used in the mark schemes for all questions.

; semicolon ­ indicates the end of a marking point.
eq ­ indicates that credit should be given for other correct alternatives to a word…

Page 5

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E2.00S

Topic 2 Exam-style topic test Teacher/Lecturer .
(c) Repeats;
Identify anomalies;
Deal with anomalies (e.g. ignore/redo etc)
Variables controlled;
Standardized methods /conditions used;
4 marks

(d) (i) Diffusion / facilitated diffusion / passive transport; 1 mark

(ii) Active transport; 1 mark

(e) Active transport {against a concentration gradient /…

Page 6

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Teacher/Lecturer .

Mark scheme for Topic 3 Exam-style topic test
General information
The following symbols are used in the mark schemes for all questions.

; semicolon ­ indicates the end of a marking point.
eq ­ indicates that credit should be given for other correct alternatives to a word…

Page 7

Preview of page 7
E3.00S

Topic 3 Exam-style topic test Student .
(b) (i) Nucleus contains DNA with genes for enzyme;
Site of transcription;
{Contains / makes} mRNA;
2 marks
(ii) Site of translation;
Ribosomes on surface attach to mRNA;
Newly formed polypeptide chain enters it;
Proteins assume three-dimensional shape within it; 2 marks…

Page 8

Preview of page 8
E4.00L


Teacher/Lecturer

Mark scheme for Topic 4 Exam-style topic test
General information
The following symbols are used in the mark schemes for all questions.

; semicolon ­ indicates the end of a marking point.
eq ­ indicates that credit should be given for other correct alternatives to a word or…

Page 9

Preview of page 9
E4.00S

Topic 4 Exam-style topic test Teacher/Lecturer.
Question 2
(a) (i) (ii) Similarities: Impregnated with lignin / stiffened cell walls / {elongated / hollow} cells;
For support / gives stem greater tensile strength;

Differences: {Xylem cells fuse to make long {tubes / vessels} / end walls of xylem cells
break…

Comments

Ray

Hi, do you also have the markschemes for the A2 topics? Thanks in advance...

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