Biology 0610/11 October/November 2023: question paper and mark scheme

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Some processes carried out by living organisms are listed. 1 egestion 2 excretion 3 reproduction 4 respiration Which processes are carried out by all living organisms? A 1, 2, 3 and 4 B 1, 2 and 3 only C 2, 3 and 4 only D 3 and 4 only

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The scientific name for humans is Homo sapiens. What does Homo refer to? A mammal B genus C kingdom D species

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Which row is correct for arthropod classification? arthropod antennae number of number group present body parts of legs A arachnids no 2 6 B crustaceans yes 3 8 C insects yes 3 6 D myriapods no 2 4

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In a mesophyll cell, where are chloroplasts found? A between the cell wall and the cell membrane B in the cytoplasm C in the nucleus D in the vacuole

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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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The diagrams show how a cell appears under the microscope at the start of an experiment and after it has been placed in a dilute solution of salts for 5 minutes. start of the after placing in a experiment dilute solution of salts Which statement explains what happens? A Dissolved salts enter the cell by diffusion. B Dissolved salts leave the cell by diffusion. C Water enters the cell by osmosis. D Water leaves the cell by osmosis.

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What causes the diffusion of oxygen into a plant cell? A active transport B movement of molecules C osmosis D photosynthesis

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What is the colour change shown by Benedict’s solution when heated with a reducing sugar? A blue to purple B blue to red C brown to blue-black D red to yellow

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The diagram shows the digestive system. Which part absorbs the most water? A D B C

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The graph shows the effect of temperature on the activity of four different enzymes. R Q S enzyme activity P 0 10 20 30 40 50 60 70 80 90 100110 temperature / °C Which conclusion about the data in the graph is correct? A Enzyme P and enzyme Q are both active at 25 °C. B Enzyme R and enzyme S are both active at 75 °C. C Enzyme P has an optimum temperature of 0 °C. D Enzyme S has an optimum temperature above 100 °C.

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Which colour does hydrogencarbonate indicator turn if the carbon dioxide concentration is increased? A green B red C violet D yellow

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The diagram shows a test-tube at the start and at the end of an enzyme experiment. enzyme + enzyme + substrate 10 minutes products temperature 35 °C At the end of the experiment, the mixture in the test-tube contains glycerol. Which row correctly identifies the enzyme and the substrate it acts on? substrate it enzyme acts on A amylase fat B amylase glucose C lipase fat D lipase glucose

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The diagram shows the teeth in the lower jaw of a human. Which tooth is a molar? B C A D

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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.

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Which food is a good source of vitamin C? A bread B cheese C chicken D oranges

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What is a description of transpiration? A exchange of gases between the leaf and the atmosphere B loss of water vapour from the leaves of a plant C movement of water from the roots to the leaves D movement of water through the cells of the leaf

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Parts of a plant are listed. 1 mesophyll cells 2 root cortex cells 3 root hair cells 4 xylem vessels What is the pathway taken by water in the plant? A 1→4→2→3 B 1→2→3→4 C 3→1→4→2 D 3→2→4→1

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Parts of the human circulatory system are listed. 1 arteries 2 capillaries 3 heart 4 veins Which structures have valves to ensure the one-way flow of blood? A 1 and 2 B 2 and 4 C 2 and 3 D 3 and 4

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Which type of cells produce antibodies? A ciliated cells B platelets C red blood cells D white blood cells

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What is an example of a transmissible disease? A coronary heart disease caused by eating a high fat diet B AIDS C liver disease caused by excessive alcohol consumption D scurvy

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Which table correctly shows the difference in composition of inspired air compared with expired air? A B inspired air expired air inspired air expired air oxygen less more oxygen less more carbon dioxide less more carbon dioxide more less C D inspired air expired air inspired air expired air oxygen more less oxygen more less carbon dioxide less more carbon dioxide more less

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What is the site of gas exchange in humans? A nose B alveoli C bronchus D trachea

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Three statements about anaerobic respiration are listed. 1 In humans, the product is lactic acid. 2 In yeast, the product is lactic acid. 3 It releases more energy per glucose molecule than aerobic respiration. Which statements are correct? A 1, 2 and 3 B 1 and 2 only C 1 only D 2 and 3 only

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Which organ produces insulin? A adrenal gland B liver C ovary D pancreas

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The diagram shows the human excretory system. Which labelled structure is the urethra? A B C D

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The diagrams show three types of neurones. L NOT TO SCALE N M Which sequence shows the direction that impulses will travel during a reflex action? A L→M→N B M→L→N C M→N→L D N→M→L

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Which part of the eye detects red light? A cornea B iris C optic nerve D retina

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The diagram shows a human sperm cell. Which structure digests the egg cell membrane? B C D A

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Which diseases can be successfully treated with antibiotics? diseases diseases caused by rickets caused by bacteria viruses A key B = can be treated C = cannot be treated D

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Some species of plants can reproduce by producing bulbs. The diagram shows a bulb. leaves air soil bulb roots The bulb is produced by one parent plant and will grow into a new plant. Which statement about the new plant is correct? A It is genetically different from its parent and is produced by asexual reproduction. B It is genetically different from its parent and is produced by sexual reproduction. C It is genetically identical to its parent and is produced by asexual reproduction. D It is genetically identical to its parent and is produced by sexual reproduction.

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Which diagram of the male reproductive system is correctly labelled? A B urethra urethra sperm sperm duct duct scrotum testis C D urethra urethra sperm sperm duct duct prostate gland prostate gland

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What can be used to reduce the transmission of HIV? screening sterile needles washing face masks blood donors for drug users hands A B C D key = can be used to reduce transmission = cannot be used to reduce transmission

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Which statement about the human sex chromosomes is correct? A Females have an X chromosome and a Y chromosome. B Females have two Y chromosomes. C Males and females have at least one X chromosome. D Males and females have at least one Y chromosome.

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The inheritance of seed colour in pea plants is controlled by a single gene. The allele for yellow seed colour, Y, is dominant. The allele for green seed colour, y, is recessive. What are the possible genotypes of a pea seed that is yellow? A YY or yy only B YY, Yy or yy C YY or Yy only D Yy or yy only

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The graph shows the heights of students in a class. 25 20 15 number of students 10 5 0 4 9 4 9 4 9 4 9 4 14 14 15 15 16 16 17 17 18 0– 5– 0– 5– 0– 5– 0– 5– 0– 14 14 15 15 16 16 17 17 18 height / cm What is a correct statement for these data? A There are two students who are 147 cm tall. B The most frequent height range is 160–164 cm. C The range of student heights measured is 150–174 cm. D There are 72 students in this study.

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Which process decreases the amount of carbon dioxide in the atmosphere? A combustion B decomposition C photosynthesis D respiration

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It is estimated that 90% of the energy which flows through living organisms in a food chain is lost between one trophic level and the next. The producers in a food chain contain 1000 units of energy. How many units will reach the quaternary consumers in the food chain? A 0.1 units B 1 unit C 10 units D 100 units

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What can increase as a result of deforestation? 1 extinctions 2 flooding 3 biodiversity A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

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The diagram shows the position of a farmer’s field near a river. The farmer uses chemical fertilisers that drain into the river, causing pollution. High concentrations of the chemical fertiliser result in increased growth of aquatic plants. At which point is the growth of aquatic plants the least affected by fertilisers? farmer’s field A C B D direction of water flow

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The diagram shows a food web. flea hawk lizard rabbit grasshopper grass corn Which food chain shows a correct flow of energy through the web? A corn → grasshopper → hawk → lizard B grass → grasshopper → hawk → rabbit C grass → rabbit → hawk → flea D corn → grass → rabbit → hawk