Biology 0610/13 October/November 2020: question paper and mark scheme

Question

The diagram shows some of the processes carried out by living organisms. carbon dioxide in the atmosphere X Y light energy green chicken plant X Y Y waste waste products products Which two characteristics of living organisms are represented by arrows X and Y? A excretion and sensitivity B nutrition and excretion C respiration and growth D sensitivity and reproduction

Question

According to the binomial system, how should a human be named? A Homo Sapiens B Homo sapiens C homo Sapiens D homo sapiens

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Which is a feature of cells used to place organisms in the plant kingdom? A cell membrane B chloroplast C cytoplasm D nucleus

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

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Which cell is adapted for absorption? A B C D

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The cell shown in the diagram has been magnified 3000 times. The diagram is 21 mm wide. What is the actual diameter of the cell? A 21 mm B 21mm 3000 C 21 mm × 3000 D 3000 21mm

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What are features of osmosis? requires a partially diffusion is requires cell walls permeable involved membrane A key B = yes C = no D

Question

The diagram shows apparatus which can be used to demonstrate osmosis. 1 2 glass tube liquid level very concentrated concentrated water sucrose solution sucrose solution partially permeable membrane After one hour, what would happen to the liquid levels in the glass tubes? liquid level in liquid level in tube 1 tube 2 A falls falls B falls rises C rises falls D rises rises

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Which substances are made by linking together glucose molecules only? A cellulose, glycogen and starch B fats, cellulose and proteins C proteins, oils and glycogen D starch, fats and oils

Question

The graph shows the effect of pH on the rate of reaction of an enzyme. rate of reaction 3 4 5 6 7 8 9 pH What does the graph show? A The enzyme is destroyed at pH 9. B The enzyme works best at pH 6. C The rate of reaction halves as the pH changes from pH 5 to pH 7. D The rate of reaction is the same at pH 5 and pH 8.5.

Question

What kind of molecule is an enzyme? A fat B glucose C protein D starch

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The diagram shows a cell with groups of bacteria around its edge. cell cytoplasm spiral-shaped chloroplast bacteria The bacteria move to areas of high oxygen concentration. Which process in the cell causes the bacteria to form these groups? A digestion B photosynthesis C reproduction D respiration

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The diagram shows part of a leaf. X What is layer X? A lower epidermis B palisade mesophyll C spongy mesophyll D vascular bundle

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Which stage of nutrition takes place when food molecules become part of a body cell? A absorption B assimilation C digestion D ingestion

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The diagram shows part of the alimentary canal and associated organs. Which labelled part stores bile? D A C B

Question

Which human teeth are used for biting and cutting food? A canines and molars B incisors and canines C molars and premolars D premolars and incisors

Question

In which order does water pass through these structures in a plant? A mesophyll → root hair → xylem B mesophyll → xylem → root hair C root hair → mesophyll → xylem D root hair → xylem → mesophyll

Question

A decrease in which factor normally causes the transpiration rate to increase? A humidity B light intensity C number of stomata D temperature

Question

In a mammal, what ensures the blood flows one-way round the circulatory system? A brain B capillaries C lungs D valves

Question

Which structure separates the right and left sides of the heart? A coronary artery B one-way valve C right atrium D septum

Question

Lyme disease is a disease which can be transmitted to humans in the following way: a mouse carries the bacteria Borrelia burgdorferi in its blood ↓ a tick bites the mouse and the bacteria are transferred into the tick ↓ the tick bites a human and bacteria are transferred to the human ↓ the human becomes infected with Lyme disease What is the pathogen in this process? A tick B Borrelia burgdorferi C mouse D blood

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The diagram shows some of the structures in a human lung. Where is the carbon dioxide concentration highest? from pulmonary artery C B to pulmonary vein D A

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What is produced by anaerobic respiration in yeast? A alcohol, carbon dioxide and water B alcohol and carbon dioxide only C carbon dioxide and lactic acid D lactic acid only

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The amount of urea in the blood increases as it passes through organ X. What is organ X? A heart B kidney C liver D pancreas

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Sensory neurones conduct impulses from A the brain and spinal cord to muscles. B one sense organ to another sense organ. C sense organs to the brain and spinal cord. D muscles to sense organs.

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What is a function of the cornea? A carries impulses to the brain B contains light-sensitive receptors C controls how much light enters the eye D refracts light

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

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Which is a definition of all drugs? A a substance taken into the body that acts as a depressant B a substance taken into the body that affects chemical reactions in the body C a substance taken into the body to cure illness D a substance taken into the body to kill bacteria

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The diagram shows half a flower. P Q R S Which row identifies the parts of the flower? P Q R S A anther stigma style ovary B anther style stigma anther C style anther ovary style D style ovary anther stigma

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The diagram shows the human male reproductive system. Q P R What are structures P, Q and R? P Q R A sperm duct urethra testis B sperm duct ureter testis C ureter penis sperm duct D urethra penis testis

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Which method of birth control would also help to protect against HIV? A condom B contraceptive pill C diaphragm D IUD

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Which word describes nuclear division to produce genetically identical cells? A fertilisation B inheritance C meiosis D mitosis

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The diagram shows a family tree. Some individuals have inherited a genetic condition. grandparents key normal female parents affected female normal male affected male children Which statement about the grandparents is correct? A Each carries two recessive alleles for this condition. B Each carries only one recessive allele for this condition. C Only the grandmothers are heterozygous. D Only the grandfathers are heterozygous.

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What is a definition of variation? A having two identical alleles of a particular gene B individuals of the same species in one area C differences between individuals of the same species D the way in which new alleles are formed

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Which pyramid of numbers has more tertiary consumers than producers? A B C D

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The diagram represents part of the carbon cycle. carbon dioxide in air Y carbon compounds X in green plants Z carbon compounds in animals Which processes are represented by X, Y and Z? X Y Z A photosynthesis feeding combustion B respiration respiration feeding C combustion feeding photosynthesis D feeding respiration combustion

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The diagram shows part of a food web. snakes badgers blackbirds frogs hedgehogs worms slugs plants What is most likely to decrease the size of the frog population? A fewer badgers B fewer slugs C more plants D more worms

Question

Genes can be inserted into crop plants to make them resistant to herbicides. Which process is this an example of? A antibiotic resistance B genetic engineering C natural selection D selective breeding

Question

Lichens are organisms that do not grow well in polluted air. Which graph shows the change in the number of lichen species from the centre of a polluted city to the unpolluted countryside 15 km away? A B number number of lichen of lichen species species 0 0 0 15 0 15 distance from distance from city centre / km city centre / km C D number number of lichen of lichen species species 0 0 0 15 0 15 distance from distance from city centre / km city centre / km

Question

Three human activities are listed. 1 burning fossil fuels 2 deforestation 3 replanting forests Which activities can cause the change shown in the graph? concentration of carbon dioxide in the atmosphere time A 1, 2 and 3 B 1 and 2 only C 1 only D 2 and 3 only