Biology 0610/12 February/March 2023: question paper and mark scheme

Question

Which row shows substances removed by excretion? substances in undigested waste products excess of food of metabolism requirements A key B = yes C = no D

Question

Which two parts are included in the scientific name of an organism? A genus and group B genus and species C group and kingdom D kingdom and species

Question

How many jointed legs does an insect have? A two pairs B three pairs C four pairs D more than six pairs

Question

The photomicrograph shows a cell from a type of aquatic plant. S R Q P Which labelled parts indicate that this is a plant cell? A P and R B P and S C Q and R D Q and S

Question

The diagram shows a magnified image of a cell. The magnification is ×360. Line LM represents the width of the image of the cell. Line LM is 18 mm long in this diagram. L M What is the actual width of the cell? A 0.005 mm B 0.05 mm C 0.5 mm D 5.0 mm

Question

Which factor would decrease the rate of diffusion of oxygen into cells? A increasing concentration gradient B increasing surface area C increasing temperature D increasing thickness of cell membrane

Question

Which molecule crosses a partially permeable membrane during osmosis? A carbon dioxide B oxygen C urea D water

Question

The diagrams show the movement of particles across a membrane. The arrows show the direction of movement. Which diagram shows active transport? A B C D using energy not using energy using energy not using energy from respiration from respiration from respiration from respiration

Question

Which substance is used to test a food for vitamin C? A Benedict’s solution B DCPIP C ethanol D iodine solution

Question

What are enzymes made of? A fatty acids B glycogen C protein D starch

Question

What remains at the end of an enzyme-controlled reaction? A enzymes and products B enzymes and substrates C enzymes only D products only

Question

A plant is placed in the dark until all its stored starch is used up. The plant is placed in light with black paper over part of one green leaf. black paper over both sides of the leaf hole cut in the paper After eight hours, the leaf is tested for starch. Which diagram shows the appearance of the leaf after this test? A B key = starch present C D = starch not present

Question

The diagram shows part of a cross-section of a leaf. R S T Which row shows the correct labels? R S T A cuticle palisade mesophyll spongy mesophyll B cuticle spongy mesophyll palisade mesophyll C epidermis palisade mesophyll spongy mesophyll D epidermis spongy mesophyll palisade mesophyll

Question

The diagrams show the different types of human teeth. 1 2 3 4 Which teeth are used for grinding food? 1 2 3 4 A key B = yes C = no D

Question

Which row shows the correct names of parts of the large and small intestines? large intestine small intestine A colon duodenum ileum rectum B rectum colon duodenum ileum C ileum rectum colon duodenum D duodenum ileum rectum colon

Question

The diagram shows the apparatus used in an experiment. The apparatus was kept at 35 °C. tubing containing starch, protease, test-tube protein and simple sugars distilled water surrounding the membrane membrane permeable to small molecules only What is likely to be present in the water surrounding the membrane after 45 minutes? A amino acids and simple sugars B protein and amino acids C protein and simple sugars D starch and simple sugars

Question

The arrows show the movement of substances from the soil into a root hair cell. Which substances move from the soil into the root hair cell? A carbon dioxide and oxygen B glucose and water C mineral ions and glucose D water and mineral ions

Question

By which process does water escape from stomata in the leaves? A active transport B diffusion C evaporation D osmosis

Question

Which row about the circulatory system is correct? part that pumps blood part with valves A heart heart and veins B heart and blood vessels all blood vessels C capillaries heart D heart capillaries and arteries

Question

Which structures may become blocked in coronary heart disease? A arteries B atria C veins D ventricles

Question

What is defined as a disease-causing organism? A bacterium B pathogen C phagocyte D virus

Question

A student investigated the effect of temperature on respiration in yeast. The diagram shows the apparatus they used. yeast suspension and nutrients indicator turned from clear to cloudy Which substance turned the indicator from clear to cloudy? A carbon dioxide B glucose C oxygen D water

Question

The apparatus shown was used to investigate aerobic respiration in seeds. The apparatus was placed in a dark room. wire mesh ruler coloured liquid seeds soaked chemical which in water absorbs the gas produced by the seeds All environmental conditions were kept constant. What will happen in the apparatus? gas absorbed direction of gas taken in by the chemical movement of the by the seeds in the wire mesh coloured liquid A carbon dioxide oxygen towards the seeds B carbon dioxide oxygen away from the seeds C oxygen carbon dioxide towards the seeds D oxygen carbon dioxide away from the seeds

Question

Why is yeast used in bread-making? A Aerobic respiration produces alcohol. B Aerobic respiration produces lactic acid. C Anaerobic respiration produces alcohol. D Anaerobic respiration produces carbon dioxide.

Question

In the diagram, which label identifies the urethra? A B D C

Question

The diagram shows a reflex arc. Which label identifies the motor neurone? finger pricked by pin D A C B

Question

What is the role of insulin? A It decreases blood glucose concentration. B It increases blood glucose concentration. C It decreases blood sucrose concentration. D It increases blood glycogen concentration.

Question

The diagram shows a seedling growing inside a dark box. dark box shoot root Which type of responses affect the direction of growth of the root and the shoot inside the box? response response by the root by the shoot A gravitropism gravitropism B gravitropism phototropism C phototropism gravitropism D phototropism phototropism

Question

Which row shows why only some infections can be successfully treated with antibiotics? antibiotics kill resistant bacteria viruses bacteria A yes yes no B no no yes C yes no no D no yes yes

Question

The diagram shows part of a flower. X What is the part labelled X? A anther B ovary C sepal D stigma

Question

Which statement about the hormones involved in human puberty is correct? A Oestrogen causes body hair and facial hair to grow in males. B Oestrogen causes breasts to develop in females. C Testosterone causes the menstrual cycle to begin in females. D Testosterone causes the hips to get wider in males.

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

Question

In mice, the allele for black hair is dominant to the allele for brown hair. Which 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%

Question

Which row about variation is correct? variation type caused by example A discontinuous environment only ABO blood groups B discontinuous genes and environment body mass C continuous genes only ABO blood groups D continuous genes and environment body mass

Question

Humans have kept sheep for many centuries because they supply us with wool. The flow chart shows how a farmer would breed his sheep to provide more wool. sheep providing most wool identified offspring providing only sheep with most most wool identified wool allowed to breed next generation born Which process is described by this flow chart? A natural selection B selective breeding C struggle for survival D genetic modification

Question

The numbers in the diagram show the amount of energy transferred through part of an ecosystem. sunlight 88 000 kJ 73 000 kJ plants energy lost 15 000 kJ 13 200 kJ herbivores energy lost carnivores energy lost How much energy is transferred from herbivores to carnivores? A 15 000 kJ + 13 200 kJ B 15 000 kJ – 13 200 kJ C 88 000 kJ + 15 000 kJ D 88 000 kJ – 15 000 kJ

Question

The diagram shows a food web in a rainforest. anaconda jaguar tree frog tamarin howler insects sloth monkey monkey plants How many trophic levels are shown in this food web? A 1 B 3 C 4 D 8

Question

The diagram shows the carbon cycle. carbon dioxide in the atmosphere 1 4 carbon compounds carbon compounds 2 3 in fossil fuels in animals 6 5 carbon compounds in plants Which labelled processes represent respiration? A 1 and 4 B 1 and 5 C 2 and 4 D 3 and 6

Question

Vitamin A deficiency is a big health problem in some parts of the world and can cause problems such as blindness. Rice can be genetically modified to enable people to make vitamin A when they eat it. 150 g of this rice provides 60% of the adult recommended daily intake of vitamin A. How much rice does an adult need to get 100% of the recommended daily intake of vitamin A? A 190 g B 210 g C 250 g D 375 g

Question

Which feature of bacteria makes them useful in genetic modification? A They can only make simple molecules. B They can reproduce rapidly. C They can cause decomposition. D They can cause disease.