Biology 0610/12 February/March 2019: question paper and mark scheme

Question

A living organism, X, can make its own food, get rid of toxic materials and detect and respond to stimuli. What other four processes must organism X carry out to stay alive? A excretion, growth, movement, sensitivity B excretion, growth, nutrition, respiration C growth, movement, reproduction, respiration D movement, reproduction, respiration, sensitivity

Question

What is a correct way of naming a species using the binomial system? A Homo sapiens B Homo Sapiens C human being D sapiens

Question

The diagram shows a pea pod, which is a fruit. sepals seed Use the key to identify the fruit. 1 sepals fall off as soon as the flower is fertilised …… go to 2 sepals do not fall off as soon as the flower is fertilised …… go to 3 2 pod contains fewer than four seeds …… A pod contains more than four seeds …… B 3 fruit splits to release several seeds …… C fruit splits to release only one seed …… D

Question

The diagram shows two cells. Which process can be carried out by only one of these cells? A controlling the chemical reactions in the cell B controlling the movement of substances into the cell C making starch inside the cell D using glucose inside the cell

Question

The diagram shows a palisade mesophyll cell from a green leaf. W X Y Z In which labelled part does photosynthesis occur and where are chromosomes found? photosynthesis where chromosomes occurs are found A X W B X Z C Y X D Y W

Question

The photograph shows a cross-section of a root. root hair xylem The root hair and the xylem are part of the same A cell and organism. B cell and tissue. C organ and organism. D tissue and organ.

Question

The diagram shows a fly. X Y The line XY represents the length of the wing. The length of line XY is 26 mm. The actual size of the wing between XY is 4 mm. What is the magnification of the image? A ×0.15 B ×6.5 C ×22 D ×104

Question

A frog is an animal. A frog’s skin is permeable to oxygen and carbon dioxide. When a frog is swimming in pond water, in which directions will there be a net diffusion of oxygen and carbon dioxide? from the frog from the water into into the water the frog A carbon dioxide oxygen B carbon dioxide and oxygen no movement C oxygen carbon dioxide D no movement carbon dioxide and oxygen

Question

Which process only involves the movement of water through the partially permeable membrane of a cell? A absorption B evaporation C osmosis D transpiration

Question

The diagram shows the effect of an enzyme working in the human digestive system. enzyme at pH 1.5 and temperature 37 °C protein amino acids What would reduce the rate of production of amino acids? A removing the amino acids as they are formed B increasing the amount of protein C raising the temperature to 37.1 °C D raising the pH to 7.5

Question

The diagram shows an experiment to investigate photosynthesis. gas light light start finish What is the most abundant gas present at the top of the tube at the end of the experiment? A carbon dioxide B methane C sulfur dioxide D oxygen

Question

DCPIP can be used to test for vitamin C in food. Lemon juice contains vitamin C. When lemon juice is tested what are the results? A starts blue, finishes colourless B starts colourless, finishes blue C stays blue D stays colourless

Question

What is meant by chemical digestion? A Large insoluble molecules are broken down into small soluble molecules. B Large soluble molecules are broken down into small insoluble molecules. C Small insoluble molecules are built up into large soluble molecules. D Small soluble molecules are built up into large insoluble molecules.

Question

The diagram shows a cross-section through a plant stem. tissue 1 tissue 2 What are the functions of the two labelled tissues? tissue 1 tissue 2 A transport only support only B transport only transport and support C transport and support transport only D support only transport only

Question

A leafy shoot is placed in a solution of a red dye. After 30 minutes, which part of a leaf from this shoot will contain the red dye? A B C D

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

The diagram shows a section of 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

The body has different types of defences against pathogens. 1 antibodies 2 hairs in the nose 3 mucus 4 skin Which defences help to prevent pathogens reaching the alveoli when breathing in? A 1, 2, and 3 B 2, 3, and 4 C 2 and 3 only D 2 only

Question

What are the approximate percentages of oxygen and carbon dioxide in inspired air? percentage of percentage of oxygen carbon dioxide A 16 4.00 B 16 8.00 C 20 0.04 D 20 4.00

Question

The flow diagram summarises three different ways that glucose can be broken down to release energy. plus oxygen 1 carbon dioxide and water glucose lactic 2 acid 3 ethanol Which routes involve the action of enzymes? A 1 only B 1 and 2 only C 2 and 3 only D 1, 2 and 3

Question

Which of these would increase the volume of urine produced by a human? A being in a hot environment B drinking large volumes of water C suffering from diarrhoea D running a long distance

Question

Which structure controls the amount of light entering the eye? A cornea B iris C lens D retina

Question

Which hormone is secreted by the pancreas? A adrenaline B insulin C oestrogen D testosterone

Question

In which organ is alcohol broken down? A brain B kidney C liver D stomach

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Antibiotics can be used to treat some infections. Antibiotics can treat infections caused by A all pathogens. B bacteria and viruses only. C bacteria only. D viruses only.

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The diagram shows a strawberry plant. Which labelled part of the plant can only be produced by asexual reproduction? A C B D

Question

What must always be available to allow seeds to germinate? A carbon dioxide B light C mineral salts D water

Question

What is a possible order of events during labour and birth? 1st 2nd 3rd 4th A cervix baby passes amniotic sac uterus muscles dilates through vagina breaks begin to contract B baby passes cervix amniotic sac uterus muscles through vagina dilates breaks begin to contract C uterus muscles cervix amniotic sac baby passes begin to contract dilates breaks through vagina D uterus muscles baby passes cervix amniotic sac begin to contract through vagina dilates breaks

Question

The diagram shows a woman’s body temperature during a menstrual cycle. Monitoring body temperature is one natural method of birth control. During which part of the menstrual cycle should sexual intercourse be avoided to try to prevent pregnancy? A B C D body temperature 1 7 14 21 28 days

Question

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

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Which cells in the human body are produced by the process of meiosis? A blood cells B muscle cells C skin cells D sperm cells

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Which human characteristic is an example of discontinuous variation? A height B skin colour C tongue rolling D weight

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An adaptive feature of an organism is defined as one that helps the organism to A change. B disperse to new habitats. C grow. D survive and reproduce.

Question

What is the principal source of energy input to biological systems? A carbon dioxide in air B glucose C minerals in soil D sunlight

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Which process involves water falling from clouds towards the ground? A evaporation B cloud formation C precipitation D transpiration

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Which enzyme in a biological washing powder will help remove fatty stains? A amylase B lipase C pectinase D protease

Question

Corn is a crop plant. Glow-worms are organisms which give off light. Which process could use these two species to make corn plants which glow? A breeding the organisms together B causing mutations in the organisms C selective breeding D transferring genes from one species to another species

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What is used to reduce competition from weeds when growing crops? A deforestation B fertiliser C herbicide D insecticide

Question

The food web shows the feeding relationships in a woodland. sparrowhawk chaffinch grey wood squirrels pigeon caterpillars trees If all the chaffinches in the food web die, which effect would this have? A The amount of damage to trees will increase. B The food supply for grey squirrels will increase. C The number of wood pigeons will increase. D The population of caterpillars will decrease.

Question

What is an example of a non-renewable resource? A biofuels B fish C fossil fuels D trees