Biology 0610/13 May/June 2020: question paper and mark scheme

Question

The diagram shows what happened in an experiment with plant seedlings. start next day light light Which characteristic of living things made the seedlings grow towards the light? A excretion B nutrition C respiration D sensitivity

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A rat has the scientific name Rattus rattus. What do the two parts of this name refer to? A genus and species B kingdom and genus C kingdom and species D variety and genus

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Explorers have found an unknown animal living in a rainforest. The animal ● lives on land but has also been seen in water ● lays soft-shelled eggs on land ● does not have gills ● has scaly skin ● is 1.0 m long ● does not produce milk. To which group is the animal most likely to belong? A amphibians B arthropods C mammals D reptiles

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Onion plant cells swell but do not burst when placed in distilled water. Which cell component prevents the onion plant cells from bursting? A cell membrane B cell wall C nucleus D vacuole

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The diagram shows part of the human body. Which level of organisation does this diagram show? A a cell B an organism C an organ system D a tissue

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Which diagram shows the appearance of a plant cell several minutes after it has been placed in a concentrated solution of sugar? A B C D

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Which statement about active transport is correct? A Particles move into cells using energy released by photosynthesis. B Particles move across a cell wall without using energy. C Particles move from a region of higher concentration to a region of lower concentration. D Particles move across a cell membrane using energy released by respiration.

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Which food-testing solution shows a positive result when it turns from blue to purple? A Benedict’s solution B biuret solution C ethanol D iodine solution

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Which statement about enzyme-controlled reactions is correct? A During the reaction, a substrate changes into a product. B The enzyme is slowly broken down during the reaction. C The higher the pH the faster the reaction. D The product is gradually used up during the reaction.

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Why do plants need nitrate ions? A to make amino acids B to make fats C to make glucose D to make starch

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Which substance found in a healthy diet helps to prevent constipation? A fat B fibre C minerals D vitamins

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The table shows the percentage of the daily recommended intake of nutrients in a serving of four foods. Which food would be the best choice to prevent scurvy? percentage of daily recommended intake in a serving of food vitamin vitamin calcium iron C D A 71 1 0 6 B 24 11 2 73 C 3 3 72 0 D 1 72 1 0

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After passing through the root hair cells of a plant, what is the next tissue through which water passes? A cortex B epidermis C mesophyll D xylem

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From which part of a leaf does most water evaporate during transpiration? A the cuticle B the guard cells C the spongy mesophyll cells D the xylem vessels

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Which blood vessel carries blood to the muscle of the heart? A coronary artery B pulmonary artery C renal vein D vena cava

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The diagram shows some veins in the human arm and the valves that they contain. If blood is squeezed out of section X–Y, where should pressure be placed on a vein to stop blood flowing into this section again? B valve A X Y C D

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What is a chemical barrier to pathogens? A nose hairs B skin C stomach acid D white blood cells

Question

The diagram shows an alveolus and capillary in a human lung. alveolus capillary X Y Which row shows the correct gas and concentrations for diffusion from X to Y in normal conditions? at point X at point Y A high concentration of carbon dioxide low concentration of carbon dioxide B high concentration of oxygen low concentration of oxygen C low concentration of carbon dioxide high concentration of carbon dioxide D low concentration of oxygen high concentration of oxygen

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Which examples of respiration produce carbon dioxide? aerobic respiration anaerobic respiration anaerobic respiration in human muscles in human muscles in yeast A key B = yes C = no D

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In which conditions do the leaves of a green plant photosynthesise? bright light darkness A key B = yes C = no D

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The diagram represents the flow of blood from the heart, through the liver and towards the kidneys. Where is urea made? B blood flow blood flow to from the heart the kidneys liver C A D

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When a man steps on a sharp object he moves his foot away very quickly. In which part of his body are the effector cells involved in this action? A brain B muscle C skin D spinal cord

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Which row matches structures in the eye with their functions? focuses light refracts light sensitive to light A cornea iris retina B retina lens iris C iris retina lens D lens cornea retina

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Which organ produces oestrogen? A heart B lung C ovary D oviduct

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What is meant by the term phototropism? A absorbing mineral ions B absorbing water C directional growth in response to gravity D directional growth in response to light

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Drugs are substances that are taken into the body. Which statement also applies to the definition of a drug? A always slow down chemical reactions B always speed up chemical reactions C are only used to destroy bacteria D modify or affect chemical reactions

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What does the drug heroin act as? A a stimulant B a depressant C an antibiotic D a nutrient

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The diagrams show pollen grains from three different species of plant as they appear under the microscope. The diagrams are all to the same scale. 1 2 3 sticky surface Which pollen grains are most likely to be carried by the wind? A 1 and 2 B 2 only C 2 and 3 D 3 only

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The diagram shows the human female reproductive system. In which structure does fertilisation occur? A B C D

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Which disease is an example of an STI? A cholera B COPD C HIV D lung cancer

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Fur colour in cats is an observable feature. Which word is used to describe an observable feature? A allele B genotype C heterozygous D phenotype

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Which row shows the sex chromosomes in the body cells and in the gametes of a woman? body cells gametes A XX all X B XX all XX C XY X or Y D XY all XY

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In mice, the allele for black hair is dominant to the allele for brown hair. What proportion of offspring will have brown hair if a cross is made between a homozygous black mouse and a heterozygous black mouse? A 0% B 25% C 50% D 100%

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The graph shows the masses of two different types of tomato. type 1 type 2 number of tomatoes 0 20 40 60 80 100 120 140 160 180 200 220 240 mass / g What can be concluded from the graph? A Genes do not affect the mass of tomatoes. B Type 1 tomatoes show continuous variation. C Type 2 tomatoes are sometimes smaller than type 1 tomatoes. D Type 2 tomatoes show discontinuous variation.

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The diagram shows part of the carbon cycle. animals green plants decay by microorganisms X Y carbon dioxide in the air What do X and Y represent? X Y A photosynthesis respiration B photosynthesis decomposition C respiration decomposition D respiration photosynthesis

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The diagram shows a food chain in a rock pool. seaweed → whelks → crabs → seagulls What will happen if the number of secondary consumers increases? There will be A fewer crabs. B fewer seagulls. C fewer whelks. D less seaweed.

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What is the role of anaerobic respiration in bread-making? A to produce alcohol to flavour the bread B to produce gas to make the bread rise C to release enough energy to bake the bread D to release enough lactic acid to kill the yeast

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A crop plant has been genetically modified to make it resistant to herbicides. Which is a possible disadvantage of introducing this new crop plant? A Loss of weeds reduces competition. B Some weeds might become resistant to the herbicide. C The crop plant is unharmed and produces a higher yield. D The new gene will appear in new generations of the crop.

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Chickens are birds that are farmed to produce eggs for human consumption. A type of chicken has been bred to lay more eggs. Which method would be used to produce this type of chicken? A asexual reproduction B biotechnology C natural selection D selective breeding

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Sewage treatment involves a number of stages. Three of the stages are listed. 1 filter beds with anaerobic microbes to digest sewage 2 screens to trap large objects 3 settlement tanks to let insoluble particles sink What is the correct order for treating sewage? A 1→2→3 B 2→3→1 C 3→2→1 D 3→1→2