Biology 0610/12 February/March 2022: question paper and mark scheme

Question

The diagrams show a test-tube containing pond water. The green colour is caused by microorganisms that have chloroplasts. oxygen bubble pale green dark green pond water area light off light on Which characteristics of living organisms are shown? A excretion, growth and movement B movement, nutrition and sensitivity C nutrition, reproduction and respiration D reproduction, sensitivity and growth

Question

Which term means a group of organisms that can reproduce to produce fertile offspring? A genus B kingdom C population D species

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Which group of characteristics describes a mammal? has produces controls body produces live body hair milk temperature young A yes yes yes yes B yes no yes yes C no yes no no D no no no no

Question

Two types of cell, one animal and one plant, were examined using a light microscope. Which row shows the correct combination of structures that would be observed in the cells? cell structure observed animal cell plant cell A chloroplast membrane vacuole cytoplasm B cytoplasm nucleus chloroplast membrane C membrane cell wall cytoplasm nucleus D nucleus chloroplast cell wall membrane

Question

The heart, arteries, veins and capillaries work together. Which level of organisation is shown by these structures working together? A a tissue B an organ C an organism D an organ system

Question

The diagram shows a cell. The diameter of the cell in the diagram is 18 mm. The actual diameter of the cell is 0.05 mm. What is the magnification of the diagram? A ×0.003 B ×0.9 C ×360 D ×36 000

Question

The diagram shows a cross-section through a leaf. Which arrow shows the direction of diffusion of carbon dioxide on a sunny day? A B D C

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The diagram shows a plant cell which has lost water to its surroundings by osmosis. Which part is the partially permeable membrane? A B C D

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Which row is correct for a positive food test for vitamin C? colour of the final colour of the food test reagent heat required food test reagent at the start A colourless yes purple B blue no colourless C colourless no blue D blue yes orange

Question

What controls the speed of chemical reactions in all living cells? A enzymes B hormones C ions D vitamins

Question

The table shows some properties of enzyme molecules. Which row is a correct description of enzymes? chemical elements effect of changing enzyme activity present temperature A C, H and O only can increase reaction rate enzyme can be reused B C, H and O only has no effect enzyme is used up C C, H, O and N can increase reaction rate enzyme can be reused D C, H, O and N can decrease reaction rate enzyme is used up

Question

A piece of foil was placed over one green and white leaf on a plant. white green foil The plant was placed under a bright light for 24 hours and then tested for starch with iodine solution. Which diagram shows the areas of the leaf that would stain blue-black with iodine solution? A B C D

Question

The diagram shows a cross-section of a leaf. Which labelled cell is a guard cell? A B D C

Question

Which condition can be caused by a lack of fibre in the diet? A constipation B obesity C scurvy D starvation

Question

Which structure has a large surface area for the absorption of digested food? A alveolus B ileum C liver D pancreas

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In which part of the alimentary canal do both chemical digestion and mechanical digestion take place? A colon B duodenum C mouth D oesophagus

Question

The diagrams show stages in the passage of water through a plant. Which arrow shows water moving in the form of water vapour? A B C D

Question

Which molecules are transported by the phloem? A cellulose B glycogen C starch D sugar

Question

The diagram shows a section through the heart. P R Q What is the function of the structure labelled Q? A It controls the amount of blood leaving the heart. B It increases the pressure in part R. C It prevents backflow of blood into part P. D It prevents blood flowing into the vena cava.

Question

Which blood vessel returns blood from the lungs to the heart? A aorta B pulmonary artery C pulmonary vein D renal vein

Question

What is an example of a transmissible disease? A an STI B chronic obstructive pulmonary disease (COPD) C coronary heart disease D dental decay

Question

Compared with inspired air, which description of expired air is correct? A It has less oxygen and less carbon dioxide. B It has less oxygen and more carbon dioxide. C It has more oxygen and less carbon dioxide. D It has more oxygen and more carbon dioxide.

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Which row shows the features of the gas exchange surface in humans? surface area thickness A large thick B large thin C small thick D small thin

Question

Yeast is placed inside a container full of a glucose solution with no air. Which word equation summarises the process that takes place inside the container? A glucose → alcohol + carbon dioxide B glucose → lactic acid C glucose + oxygen → carbon dioxide + water D glucose + oxygen → alcohol

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Which process uses energy released in respiration? A diffusion B evaporation C growth D osmosis

Question

The graph shows the rates of sweat production and urine production at different environmental temperatures. 150 sweat 100 rate of production / cm3 per hour urine 50 0 0 5 10 15 20 25 30 35 environmental temperature / °C Which statement is correct? A As the temperature increases, the rates of sweat and urine production increase. B As the temperature increases, the rate of urine production increases. C At 25 °C the rates of sweat and urine production are the same. D Urine and sweat production are directly proportional to environmental temperature.

Question

Which numbered parts form the central nervous system? 1 2 3 A 1 only B 1 and 2 C 2 and 3 D 3 only

Question

The diagram shows a section through the eye of an octopus. Octopuses have eyes that are similar in structure and function to human eyes. 1 7 2 6 5 4 3 Which row identifies the structures of the octopus eye? pupil cornea lens iris A 4 6 7 3 B 5 1 2 3 C 4 1 7 5 D 5 6 2 4

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The diagram shows a seedling that has been placed in a pot of soil. Which diagram shows what happens after five days? A B C D

Question

What is the definition of a drug? A any illegal substance taken into the body B any substance taken into the body C any substance taken into the body that modifies or affects chemical reactions in the body D any substance taken into the body which is not a medicine

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Which statement about reproduction is correct? A All living species can reproduce asexually. B Gametes are needed for asexual reproduction. C Only organisms that are separated from other organisms of the same species can reproduce asexually. D Some organisms reproduce asexually and sexually.

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Fertilisation is the fusion of which parts of two cells? A cell walls B cytoplasm C nuclei D vacuoles

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Which row shows the conditions required for germination? carbon suitable oxygen water dioxide temperature A key B = yes C = no D

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The pedigree diagram shows the inheritance of a genetic disease in a family. 1 key female that does not have the disease 5 male that does not have the disease female that has the disease male that has the disease Which row describes the correct genotypes for individual 1 and individual 5, for this genetic disease? individual 1 individual 5 A heterozygous homozygous dominant B heterozygous homozygous recessive C homozygous dominant heterozygous D homozygous recessive heterozygous

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The photograph shows two wind-pollinated flowers. Which row shows the features of these flowers? anthers feathery large petals positioned stigmas inside the flower A yes yes no B yes no no C no no yes D no yes yes

Question

A scientist studied wild birds that lived by a lake. He observed that one bird species had a beak that was adapted to extract small insects from the water. Which process would have occurred in the development of this specialised beak? A genetic engineering B natural selection C selective breeding D fossilisation

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What is the principal source of energy for the food chain shown? grass → caterpillar → frog → snake → owl A water B mineral ions C glucose D sunlight

Question

The diagram shows three different types of organism in a food chain. producer → organism 2 → organism 3 Which statement is correct for this food chain? A Organism 2 is a carnivore. B Organism 2 is a secondary consumer. C Organism 3 is a carnivore. D Organism 3 is a tertiary consumer.

Question

Which row shows the expected consequences of deforestation? carbon dioxide concentration in soil levels flooding the atmosphere A decreases decrease increases B decreases increase decreases C increases decrease increases D increases increase decreases

Question

Gorillas are a type of large mammal. The graph shows the number of gorillas found in one region of a country. 300 250 200 number of 150 gorillas 100 50 0 1985 1990 1995 2000 2005 2010 2015 year What could have caused the trend between 2000 and 2015? A deforestation B habitat destruction C hunting ban D disease