Cambridge IGCSE Biology (9-1) 0970 — 2022 Oct/Nov Paper 1 · Variant 2
0970/12/O/N/22 · 40 questions · 40 marks · ≈45 min
The question paper and its mark scheme, free to read here and free to download. This is Cambridge’s own paper, exactly as it was sat.
Question paper16 pages
Mark scheme3 pages
Answers below. Sit the paper first if you are practising.
Questions as text
Q1 · Which process provides an organism with the raw materials needed for tissue repair?
1 Which process provides an organism with the raw materials needed for tissue repair? A excretion B growth C nutrition D respiration
Mark scheme: C
Q2 · Which name is given to a group of individuals that can reproduce to produce fertile…
2 Which name is given to a group of individuals that can reproduce to produce fertile offspring? A a genus B a kingdom C a species D an organ system
Mark scheme: C
More questions on Concept and uses of classification systems
Q3 · An animal has four legs, hair and a tail
3 An animal has four legs, hair and a tail. To which group of vertebrates does it belong? A amphibians B birds C mammals D reptiles
Mark scheme: C
Q4 · Root hair cells are found on plant roots
4 Root hair cells are found on plant roots. Which feature is present in a root hair cell but not in a sperm cell? A cell membrane B cell wall C chloroplasts D cytoplasm
Mark scheme: B
Q5 · The cells listed have specialised structures that allow them to carry out their functions
5 The cells listed have specialised structures that allow them to carry out their functions. 1 ciliated cell 2 nerve cell 3 root cortex cell 4 sperm cell Which cells have structures that can move? A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4
Mark scheme: B
Q6 · A cell was viewed under a microscope
6 A cell was viewed under a microscope. The actual length of the cell is 0.025 mm. The magnification of the image is ×400. What is the length of the cell in the image? A 10 mm B 100 mm C 1600 mm D 16 000 mm
Mark scheme: A
Q7 · The roots of a plant were placed in a solution of red dye
7 The roots of a plant were placed in a solution of red dye. After 24 hours, a section of root and a section of leaf were cut from the plant. top of the leaf Q R P S root leaf In which tissues will the red dye be visible? A P and R B P and S C Q and R D Q and S
Mark scheme: C
Q8 · Which row shows features of osmosis in cells?
8 Which row shows features of osmosis in cells? requires F water can water can requires a ; a cell move into move out of cell wall membrane the cell the cell A Jv Jv J J key B Jv x J J J/ = yes Cc Jv Jv x v X =no D x Jv Jv x
Mark scheme: B
Q9 · Which chemical is used to test for the presence of protein in a food sample?
9 Which chemical is used to test for the presence of protein in a food sample? A Benedict’s solution B biuret solution C DCPIP D iodine solution
Mark scheme: B
Q10 · Which statement about enzymes is correct?
10 Which statement about enzymes is correct? A They are made of carbohydrates. B Their activity is unaffected by pH. C They are used up during the reaction. D They have a complementary shape to their substrate.
Mark scheme: D
Q11 · The graph shows the effect of temperature on the activity of an enzyme
11 The graph shows the effect of temperature on the activity of an enzyme. enzyme activity 0 10 20 30 40 50 60 70 80 temperature / °C At which temperature is the enzyme most active? A 15 °C B 25 °C C 35 °C D 60 °C
Mark scheme: C
Q12 · The substances listed are found in the leaf of a plant
12 The substances listed are found in the leaf of a plant. Which substance is obtained from the soil? A carbon dioxide B chlorophyll C glucose D mineral ions
Mark scheme: D
Q13 · The diagram shows an experiment to find out if carbon dioxide is necessary for…
13 The diagram shows an experiment to find out if carbon dioxide is necessary for photosynthesis. The plant is kept in the dark for 48 hours to remove any starch. Then it is set up in the light, as shown. solution that absorbs carbon dioxide After 10 hours, leaves X and Y were tested for starch. What is the expected result? presence of starch in leaf X in leaf Y A Jv Jv key B x x v= present Cc v x X = absent D x v
Mark scheme: C
Q14 · The diagram shows a cross-section of a human tooth
14 The diagram shows a cross-section of a human tooth. Y X Z Which row identifies the labels in the diagram? X Y Z A dentine enamel pulp cavity B dentine pulp cavity enamel C enamel pulp cavity dentine D enamel dentine pulp cavity
Mark scheme: D
Q15 · Which statement is correct?
15 Which statement is correct? A Amylase breaks down glucose to starch. B Amylase is secreted into the mouth and small intestine. C Lipase breaks down glycerol to fatty acids. D Protease is secreted into the oesophagus and stomach.
Mark scheme: B
Q16 · Where is most water absorbed in the alimentary canal?
16 Where is most water absorbed in the alimentary canal? A large intestine B oesophagus C small intestine D stomach
Mark scheme: C
Q17 · The diagram shows a bean seedling soon after it has germinated
17 The diagram shows a bean seedling soon after it has germinated. Where is most water absorbed? A B C D
Mark scheme: C
Q18 · Which process occurs during transpiration?
18 Which process occurs during transpiration? A evaporation of water from the xylem B loss of water by osmosis from the guard cells C movement of water vapour through the spongy mesophyll by active transport D movement of water vapour through the stomata by diffusion
Mark scheme: D
Q19 · The diagram shows the outside of a human heart
19 The diagram shows the outside of a human heart. Which structure is a coronary artery? B A C D
Mark scheme: D
Q20 · The diagram shows a section of a human vein
20 The diagram shows a section of a human vein. X What is the function of the part labelled X? A to make sure the blood flows to the heart B to make sure the blood flows to the kidneys C to make sure the blood flows to the brain D to make sure the blood flows to the lungs
Mark scheme: A
Q21 · Campylobacter is a bacterium that can cause food poisoning
21 Campylobacter is a bacterium that can cause food poisoning. Which word describes Campylobacter? A antibody B disease C pathogen D symptom
Mark scheme: C
Q22 · What is the approximate percentage of oxygen in expired air?
22 What is the approximate percentage of oxygen in expired air? A 0.04% B 4% C 16% D 21%
Mark scheme: C
Q23 · Which process could continue without energy from respiration?
23 Which process could continue without energy from respiration? A active transport B growth C osmosis D protein synthesis
Mark scheme: C
Q24 · Which row shows the products of anaerobic respiration in humans and yeast?
24 Which row shows the products of anaerobic respiration in humans and yeast? products in humans products in yeast A lactic acid only alcohol only B lactic acid only alcohol and carbon dioxide C lactic acid and carbon dioxide alcohol only D lactic acid and carbon dioxide alcohol and carbon dioxide
Mark scheme: B
Q25 · A person eats foods containing proteins
25 A person eats foods containing proteins. Some of the amino acids in the proteins are converted to urea and excreted from the body. 1 2 3 proteins amino acids urea urine Which row identifies the sites of processes 1, 2 and 3? site of process 1 site of process 2 site of process 3 A stomach liver kidney B liver kidney bladder C stomach kidney liver D liver stomach kidney
Mark scheme: A
Q26 · Which part of the eye refracts light?
26 Which part of the eye refracts light? A cornea B iris C pupil D retina
Mark scheme: A
Q27 · Which hormone causes an increase in breathing rate, an increase in heart rate and the…
27 Which hormone causes an increase in breathing rate, an increase in heart rate and the widening of pupils? A insulin B adrenaline C oestrogen D testosterone
Mark scheme: B
Q28 · Which row about tropic responses is correct?
28 Which row about tropic responses is correct? gravitropism phototropism A root grows away from gravity shoot grows away from light source B root grows away from gravity shoot grows towards light source C root grows towards gravity shoot grows away from light source D root grows towards gravity shoot grows towards light source
Mark scheme: D
Q29 · What is the definition of a drug?
29 What is the definition of a drug? A a substance produced by a gland that is carried in the blood and alters the activity of target organs B a substance produced by white blood cells that is carried in the blood and destroys bacteria and viruses C a substance taken into the body that modifies or affects chemical reactions carried out in the body D a substance that increases the rate of chemical reactions in the body and is not changed by the reaction
Mark scheme: C
Q30 · What occurs during fertilisation?
30 What occurs during fertilisation? A fusion of two gamete nuclei B fusion of two zygote nuclei C splitting of a gamete nucleus D splitting of a zygote nucleus
Mark scheme: A
Q31 · Which hormone causes the development of secondary sexual characteristics in human males?
31 Which hormone causes the development of secondary sexual characteristics in human males? A adrenaline B insulin C progesterone D testosterone
Mark scheme: D
Q32 · The diagrams show four methods of birth control
32 The diagrams show four methods of birth control. MON TUE WED THU FRI & SAT » SUN SUN “SAT < FRI ~THU «WED TUE «Non? Y ORAL CONTRACEPTIVE TABLETS MON® TUE WED THU ® FRI & SAT & SUN SUN “SAT —1 FRI THU «WED~«TUE =NoN WHEN THIS PACK IS EMPTY START A NEW ONE IMMEDIATELY not to scale What are barrier methods of birth control? —s 0 0O WwW > «~ «eM Ke & KS & << [0 x Kx QS \ & & [a key v= yes X =no
Mark scheme: C
Q33 · In one species of plant, the allele for red-coloured fruit is dominant and is represented…
33 In one species of plant, the allele for red-coloured fruit is dominant and is represented by the letter R. The allele for white-coloured fruit is recessive and is represented by the letter r. Two plants that are heterozygous for fruit colour are crossed. What are the possible genotypes of the offspring plants from this cross? A RR, Rr and rr B all Rr C all rr D Rr and rr only
Mark scheme: A
Q34 · Which phenotype shows discontinuous variation in humans?
34 Which phenotype shows discontinuous variation in humans? A foot length B height C sex D weight
Mark scheme: C
Q35 · What can increase the genetic variation in a species?
35 What can increase the genetic variation in a species? A growth B malnutrition C mitosis D mutation
Mark scheme: D
Q36 · The diagram shows part of the carbon cycle
36 The diagram shows part of the carbon cycle. 1 carbon dioxide 2 concentration in the atmosphere 3 industry transport 4 animals plants and power fossil fuels (coal and oil) decomposers Which processes reduce or increase carbon dioxide concentration in the atmosphere? reduces increases A 1 4 B 2 3 C 3 2 D 4 1
Mark scheme: B
Q37 · The diagram shows a food chain
37 The diagram shows a food chain. rose bush → aphids → ladybirds → spiders A disease reduced the number of ladybirds. What would be the likely effect of this on the numbers of aphids and spiders? aphids spiders A decrease decrease B decrease increase C increase decrease D increase increase
Mark scheme: C
Q38 · The block at the base of each pyramid represents the number of producers
38 The block at the base of each pyramid represents the number of producers. Which pyramid of numbers has more tertiary consumers than secondary consumers? A B C D
Mark scheme: C
Q39 · Corn that has been genetically engineered to be resistant to pests was developed in the…
39 Corn that has been genetically engineered to be resistant to pests was developed in the 1990s. The graph shows the change in the percentage of corn grown that was genetically engineered and the change in the mass of chemical insecticides used. 0.3 100 0.25 80 0.2 percentage of insecticide 60 corn grown that use / kg per 0.15 was genetically hectare 40 0.1 engineered 0.05 20 0 0 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 year key insecticide use percentage of corn grown that was genetically engineered Which statement describes the data shown in the graph between 1996 and 2013? A The percentage of corn grown that was genetically engineered increased and the use of insecticides decreased. B The percentage of corn grown that was genetically engineered increased and the use of insecticides increased. C The percentage of corn grown that was genetically engineered decreased and the use of insecticides decreased. D The percentage of corn grown that was genetically engineered decreased and the use of insecticides increased.
Mark scheme: A
Q40 · What could be undesirable effects of deforestation?
40 What could be undesirable effects of deforestation? 1 extinction of species 2 increased flooding 3 reduction of atmospheric carbon dioxide A 1 and 2 only B 1 and 3 only C 1, 2 and 3 D 2 and 3 only
Mark scheme: A
What was in this paper
The subtopics covered by these 40 questions, and how many questions each got. Open one in a new tab to see every Cambridge question on it.
2Enzymes2Variation2Absorption1Anaerobic respiration1Biological molecules1Blood vessels1Characteristics of living organisms1Chemical digestion1Concept and uses of classification systems1Diet1Digestive system1Diseases and immunity1Drugs1Energy flow1Excretion in humans1Features of organisms1Food chains and food webs1Gas exchange in humans1Genetic modification1Habitat destruction1Heart1Hormones1Monohybrid inheritance1Nutrient cycles1Osmosis1Photosynthesis1Respiration1Sense organs1Sex hormones in humans1Sexual reproduction1Sexual reproduction in humans1Size of specimens1Transpiration1Tropic responses1Water uptake1Xylem and phloem1What you needed in this session
Cambridge’s own grade thresholds for 2022 Oct/Nov, Paper 1 · Variant 2. A higher threshold means an easier paper — the bar moves with how the cohort did.