Biology 0610/11 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

Question

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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An animal can swim, has a backbone and produces milk. To which group does it belong? A amphibians B fish C mammals D reptiles

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The diagram shows two guard cells. Which label shows the cell wall? B A C D

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What is the correct order to describe an increasing level of organisation? A cell → organ → tissue → organ system B tissue → cell → organ → organ system C organ → tissue → cell → organ system D cell → tissue → organ → organ system

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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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The apparatus shown is used to demonstrate osmosis. dialysis tubing acting as a partially permeable membrane Q P The mass of the dialysis tubing and contents was 11.2 g at the start of the demonstration and 9.4 g at the end. Which solutions would cause this change in mass? solution P solution Q A 5% salt solution 10% salt solution B 10% salt solution 5% salt solution C water 5% salt solution D water 10% salt solution

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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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What is the definition of an enzyme? A a carbohydrate that acts as a catalyst B a DNA molecule that acts as a catalyst C a fat that acts as a catalyst D a protein that acts as a catalyst

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Four test-tubes are set up as shown. Which test-tube contains the least carbon dioxide after one hour? A B C D black water polythene to keep aquatic out light animal light light light aquatic plant

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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 activity of amylase is measured in four parts of the alimentary canal. Which two parts have the most amylase activity? A colon and duodenum B colon and stomach C mouth and duodenum D stomach and mouth

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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 a section through the heart and its blood vessels. X Which row gives the vessel name and the direction of blood flow in vessel X? vessel name direction of blood flow A aorta towards the lungs B pulmonary artery towards the lungs C pulmonary artery away from the lungs D vena cava away from the lungs

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

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What is the approximate percentage of oxygen contained in the air breathed out of the lungs? A 0% B 4% C 16% D 20%

Question

The diagram shows an experiment to investigate the respiration of yeast. Oil prevents oxygen entering the glucose and yeast suspension. delivery tube thin layer of oil bubble of gas glucose and yeast limewater suspension If no oxygen is present in the glucose and yeast suspension, what will occur? A Ethanol will be produced and the limewater will stay clear. B Ethanol will be produced and the limewater will go cloudy. C Lactic acid will be produced and the limewater will stay clear. D Lactic acid will be produced and the limewater will go cloudy.

Question

What happens during respiration in germinating seeds? A Seed temperature decreases. B Carbon dioxide is taken up by the seeds. C Glucose is used up by the seeds. D Oxygen is given out by the seeds.

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Which row describes the urine produced by a person who is exercising on a hot day? concentration volume of urine of urine A concentrated large B concentrated small C dilute large D dilute small

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What is the function of the optic nerve? A to carry impulses from the brain to the retina B to carry impulses from the retina to the brain C to carry light from the brain to the retina D to carry light from the retina to the brain

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What causes the development of female secondary sexual characteristics? A adrenaline production B menstrual cycle starting C oestrogen production D ovulation occurring

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The diagram shows a cross-section of the skin. Which part produces a substance which cools the skin when it evaporates? A D B C

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Gravitropism and phototropism are names given to specific plant growth responses. How do shoots and roots normally respond? direction of growth of shoots direction of growth of roots light gravity light gravity A towards away away towards B away towards towards away C towards away towards away D away towards away towards

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Which type of infection could be treated successfully with antibiotics? infection caused by resistant bacteria viruses bacteria A key B = yes C = no D

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What takes place during fertilisation? A One gamete produces one zygote. B One gamete produces two zygotes. C Two gametes produce one zygote. D Two gametes produce two zygotes.

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What is the transfer of pollen from an anther to a stigma called? A fertilisation B respiration C meiosis D pollination

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What happens to the uterus lining during menstruation? A breaks down B new blood vessel growth C implantation of embryo D repair and thickening

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The diagram of the female reproductive system shows where different methods of birth control can be used. Where would an IUD be placed? B A C D

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What is defined as a length of DNA that codes for a protein? A amino acid B chromosome C gene D nucleus

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When damaged tissues are repaired cells undergo division by A meiosis to produce genetically identical cells. B meiosis to produce genetically different cells. C mitosis to produce genetically identical cells. D mitosis to produce genetically different cells.

Question

Pea plants produce either yellow or green seeds. Yellow (Y) is dominant to green (y). What are the most likely phenotypes of the offspring of a cross between YY and Yy plants? A 50% yellow and 50% green B 75% yellow and 25% green C 100% yellow D 100% green

Question

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 a simple food chain. grass → gazelle → lion The arrows show the energy flow through the food chain. Where does the grass obtain its energy? A oxygen from air B water C minerals in soil D the Sun

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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.

Question

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

Question

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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Which is an example of an undesirable effect of deforestation? A decreased carbon dioxide concentration in the atmosphere B decreased soil erosion C increased flooding D the variety of organisms is maintained

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Wheat is often grown in large areas as a monoculture. What is a negative environmental impact of this method of farming? A The variety of species in the area is reduced. B Fewer types of pesticide are needed. C Larger harvests can be produced. D Specialist machinery can be used.