Biology 0610/11 October/November 2025: question paper and mark scheme

Question

Which three characteristics apply to all organisms? A egestion, movement and photosynthesis B egestion, movement and respiration C excretion, movement and respiration D excretion, photosynthesis and respiration

Question

The song thrush, Turdus philomelos, is a bird. What is the genus of this bird? A philomelos B song C thrush D Turdus

Question

How many pairs of jointed legs does an arachnid have? A two pairs only B three pairs only C four pairs only D more than four pairs

Question

Which structure is found in bacterial cytoplasm but not in the cytoplasm of animal cells? A cell membrane B cell wall C nucleus D plasmid

Question

Which row correctly matches a type of specialised cell with its function? type of cell function A ciliated cell absorption of nutrients B palisade mesophyll cell production of starch C root cortex cell absorption of mineral ions from the soil D white blood cell transport of oxygen

Question

Different factors affect the rate of diffusion of molecules across a membrane. Which row shows the changes that will result in the greatest increase in the rate of diffusion? concentration thickness of surface area of gradient across temperature the membrane the membrane a membrane A decrease decrease decrease increase B decrease increase increase decrease C increase decrease increase increase D increase increase decrease decrease

Question

The diagram shows part of a cross-section of a leaf. Which arrow shows the movement of water by osmosis in the leaf? D mesophyll cells A B air space xylem vessel C

Question

The table shows the results of some food tests. Which row shows a food that contains carbohydrates only? Benedict‘s ethanol iodine solution biuret test solution test emulsion test test A blue purple clear blue-black B blue blue cloudy yellow-brown C red blue clear blue-black D red purple cloudy yellow-brown

Question

What catalyses the chemical reactions needed to sustain life in organisms? A enzymes B hormones C mitochondria D ribosomes

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Which process in plant cells requires chlorophyll? A fertilisation B nutrition C movement D respiration

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Which molecule contains nitrogen? A fat B glucose C protein D starch

Question

The diagram shows part of a cross-section of a leaf. Q P Which row correctly identifies tissue P and the tissue that contains cell Q? P Q A palisade mesophyll cuticle B palisade mesophyll upper epidermis C spongy mesophyll cuticle D spongy mesophyll upper epidermis

Question

Which nutrients in the diet prevent rickets? A calcium and vitamin C B calcium and vitamin D C iron and vitamin C D iron and vitamin D

Question

The diagram shows part of the human digestive system. X What is a function of the part labelled X? A absorption B egestion C excretion D ingestion

Question

What increases the surface area of food for the action of enzymes? A absorption B active transport C respiration D physical digestion

Question

The graph shows the effect of pH on the activity of an enzyme. enzyme activity 1 3 5 7 9 11 pH In which part of the alimentary canal would this enzyme be most active? A large intestine B mouth C small intestine D stomach

Question

Which processes occur during transpiration? 1 Water diffuses from the air spaces into the mesophyll cells. 2 Water evaporates from surfaces of mesophyll cells into air spaces. 3 Water from air spaces evaporates through stomata. 4 Water vapour from air spaces diffuses through stomata. A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

Question

What is the sequence in which blood flows through the circulatory system? A arteries → veins → capillaries → heart B capillaries → arteries → heart → veins C capillaries → veins → heart → arteries D heart → veins → arteries → capillaries

Question

Which row identifies methods that will reduce the spread of disease? treating washing hands providing clean sewage regularly drinking water A B C D key = a method that will reduce the spread of disease = a method that will not reduce the spread of disease

Question

Which chemical can be used to show the presence of carbon dioxide? A Benedict’s solution B biuret reagent C DCPIP D limewater

Question

A mixture of glucose, yeast and water was placed in a test-tube. A balloon was attached to the open end of the test-tube. The apparatus was kept at 30 °C for one hour. The diagram shows the apparatus. at the start of after one hour experiment balloon glucose, water and yeast mixture Which word equation can be used to explain what happened to the balloon after one hour? A carbon dioxide + water → glucose + oxygen B glucose → alcohol + carbon dioxide C glucose → carbon dioxide + water D glucose → lactic acid

Question

Urine is formed from the substances excreted by the kidneys. The pie chart shows the composition of urine in a healthy person. urea X water What is label X? A ions B platelets C starch D sucrose

Question

Which hormone increases pupil diameter and is secreted in ‘fight or flight’ situations? A adrenaline B insulin C oestrogen D testosterone

Question

Which responses are usually shown by the root of a plant? gravitropism phototropism A – – key B – + + = grows towards the stimulus C + – – = grows away from the stimulus D + +

Question

The diagram shows a potato tuber that developed from the stem of a parent potato plant. Three shoots are starting to grow from the tuber. shoot tuber How do the genotypes of the shoots compare with the genotypes of the tuber and of the parent? genotype of tuber genotype of parent A is different to the shoots is different to the shoots B is different to the shoots is identical to the shoots C is identical to the shoots is different to the shoots D is identical to the shoots is identical to the shoots

Question

What is a feature of wind-pollinated flowers? A anthers inside the flower B large, brightly coloured petals C long, feathery stigmas D production of nectar

Question

Which parts of the gametes fuse during fertilisation? A cell membranes B cell walls C cytoplasm D nuclei

Question

The statements are about some hormones in the human body. V promotes the development of breast tissue. W promotes the development of stronger muscles. X causes the voice to deepen at puberty. Y is produced by the pancreas. Which statements are correct for testosterone? A V and W B V and Y C W and X D X and Y

Question

Which type of organism causes an infection that may lead to AIDS? A amphibian B bacterium C myriapod D virus

Question

What does a gene code for? A an amino acid B a carbohydrate C a fat D a protein

Question

Which row shows the sex chromosomes present in human body cells? sex chromosomes sex present A female XX B female XY C male XX D male YY

Question

An individual who is homozygous dominant for a characteristic has the genotype TT. Another individual is heterozygous for this characteristic. What is the correct percentage of genotypes for the offspring resulting from a genetic cross between these two individuals? A 100% Tt B 50% TT, 50% tt C 50% TT, 50%Tt D 25%TT, 50% Tt, 25% tt

Question

The graph shows the number of students with each blood group in a class. 18 16 14 12 number of 10 students 8 6 4 2 0 A O B AB blood group What can be concluded about blood groups from the graph? A Blood groups are an example of continuous variation caused by genes and the environment. B Blood groups are an example of continuous variation caused by genes only. C Blood groups are an example of discontinuous variation caused by genes and the environment. D Blood groups are an example of discontinuous variation caused by genes only.

Question

The diagram shows part of a food web in a pile of dead leaves. centipedes bacteria millipedes mites fungi dead leaves Which row describes the organisms? bacteria centipedes leaves A consumers herbivores producers B decomposers carnivores decomposers C decomposers consumers producers D producers carnivores producers

Question

The diagram shows an ecological pyramid. Which letter represents the producers? A B C D

Question

The diagrams show the movement of two gases during the day and during the night. during the day during the night W Y X Z Which letters represent carbon dioxide? A W and Y B W and Z C X and Y D X and Z

Question

The graph shows the estimated growth of the human population. 7 6 5 number of people 4 / billion 3 2 1 0 0 400 800 1200 1600 2000 year Which phase of population growth is occurring between the years 1600 and 2000? A death phase B exponential (log) phase C lag phase D stationary phase

Question

Which statement describes a sustainable resource? A a resource that does not require conserving B a resource that is produced as rapidly as it is removed from the environment C a resource that is produced using genetic modification D a resource that results in habitat destruction when extracted from the environment

Question

What increases the chance of conserving endangered species? A climate change B education C hunting D introducing new species

Question

Four statements about genetic modification in crop plants are listed. 1 They can reduce the amount of herbicide used. 2 They can reduce the amount of insecticide used. 3 They can reduce the damage by pests to crop plants. 4 They can reduce the nutritional quality of crop plants. Which statements give reasons why genetic modification is used in crop production? A 1, 2 and 3 B 1, 2 and 4 C 1, 3 and 4 D 2, 3 and 4