0610_s19_qp_33
A paper of Biology, 0610
Questions:
8
Year:
2019
Paper:
3
Variant:
3
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1
Several processes occur in the alimentary canal. The boxes on the left show the names of processes that occur in the alimentary canal. The boxes on the right show descriptions of processes that occur in the alimentary canal. Draw five straight lines to link each process with its description. process description breakdown of food into smaller pieces absorption breakdown of large, insoluble molecules into small, soluble molecules chemical digestion movement of digested food molecules into cells egestion movement of small food molecules and ions into the blood ingestion passing out of food that has not been digested or absorbed mechanical digestion taking of substances into the body State the name of one type of digested food molecule that is absorbed. The cholera pathogen produces a toxin which affects part of the alimentary canal. State the type of pathogen that causes cholera. One of the symptoms of cholera is diarrhoea. Describe what is meant by the term diarrhoea. Outline the treatment for diarrhoea.
7. Human nutrition  →  7.2. Digestive system
10. Diseases and immunity  →  10.1. Diseases and immunity
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2
Transpiration is the loss of water from plant leaves. Complete the sentences using the words and phrases from the list. Each word or phrase may be used once, more than once or not at all. active transport condenses cortex diffusion evaporates flows gas guard liquid osmosis root hair stomata spongy mesophyll water vapour Water on the surface of cells . The water vapour moves out of the leaf by into the atmosphere through openings in the leaf called . A student compared the mass of water lost from four leaves. Four similarly-sized leaves were collected from the same plant. Some of the surfaces of the leaves were covered with a waterproof substance. The mass of each leaf was measured. The leaves were hung on a piece of string, as shown in . The leaves were left for several hours and the mass of each leaf was measured again. F G H J no surface covered lower surface covered upper surface covered upper and lower surfaces covered The results from the experiment are shown in Table 2.1. Table 2.1 leaf mass at the start / g mass at the end / g difference in mass / g F 0.67 0.40 G 0.70 0.67 0.03 H 0.69 0.44 0.25 J 0.73 0.73 0.00 Calculate the difference in mass for leaf F and write your answer in Table 2.1. Describe how the different treatments of the leaves affected their loss of mass. Use the information in and Table 2.1 to support your answer. Suggest a reason for the difference in mass lost between leaves G and H. is a photomicrograph of a cross-section of part of a leaf. P K L M N State the letter on which identifies a cell where photosynthesis occurs. State the letter on that identifies the part of the plant that transports water from the roots to the leaves and state its name. name
8. Transport in plants  →  8.3. Transpiration
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3
Some bacteria are pathogens. Bacteria were grown in a Petri dish on agar jelly which contained nutrients. The bacteria covered the whole surface of the agar jelly. Three paper discs were placed on the agar jelly. Each paper disc contained a different antibiotic. The bacteria were left to grow for 24 hours at 35 °C. shows the growth of the bacteria on the agar jelly at the start and after 24 hours. at the start after 24 hours paper disc containing antibiotics bacteria growing over the surface of the agar jelly clear area with no bacteria Suggest why there are clear areas around some of the paper discs after 24 hours. List the numbers of the antibiotics in order from most effective to least effective. Give a reason for your choice. most effective least effective reason is a drawing of a bacterial cell. cell membrane DNA cell wall flagellum plasmid ribosome capsule cytoplasm State three ways in which a plant cell is similar to the bacterial cell shown in . Pathogens for transmissible diseases can be transmitted either through direct contact or indirect contact. Table 3.1 gives examples of ways in which pathogens can be transmitted. Identify the examples of direct contact by placing a tick (✓) in the correct boxes in Table 3.1. Table 3.1 example direct contact air blood body fluids contaminated food contaminated surfaces
15. Drugs  →  15.1. Drugs
10. Diseases and immunity  →  10.1. Diseases and immunity
21. Biotechnology and genetic modification  →  21.1. Biotechnology and genetic modification
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4
is a photograph of a zedonk. A zedonk is the offspring of a male zebra and a female donkey. State the name of the group within the animal kingdom to which zebras, donkeys and zedonks belong. State one feature of the group identified in 4that is visible in . The zedonk was produced by sexual reproduction. Define the term sexual reproduction. shows a plant. This plant reproduces asexually by producing plantlets on side shoots. side shoot plantlets The box on the left contains the term asexual reproduction. The boxes on the right show some sentence endings. Draw two straight lines from the asexual reproduction box to the boxes on the right to make two correct sentences. needs male and female gametes. needs two parents. only needs one parent. Asexual reproduction produces offspring that are a different species. produces offspring that are genetically different to the parents. produces offspring that are genetically identical to the parent.
16. Reproduction  →  16.1. Asexual reproduction
16. Reproduction  →  16.2. Sexual reproduction
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5
List two features of human gas exchange surfaces. Carbon dioxide is excreted through the lungs. Describe a chemical test that would identify that the gas excreted through the lungs is carbon dioxide. chemical test positive test result There are differences between the composition of inspired and expired air. Table 5.1 shows four of the gases that make up air and the percentage of each gas that is in inspired and expired air. Use numbers from the list to complete the table. Each number can be used once, more than once or not at all. 4.00 58.00 21.00 16.00 0.04 78.00 1.00 0.96 Table 5.1 gas percentage in inspired air percentage in expired air carbon dioxide 0.04 oxygen 16.00 Z variable increased nitrogen 78.00 78.00 State the name of gas Z shown in Table 5.1. An athlete measured his breathing rate during 12 minutes of exercise. The results are shown in . breathing rate / breaths per minute time / minutes Describe the changes in the breathing rate, while the athlete was exercising, shown in . Calculate the percentage change in the breathing rate between 0 and 10 minutes. Give your answer to the nearest whole number. Show your working. % The activity of the heart can also be used to monitor the effects of physical activity. State two methods that can be used to monitor the activity of the heart.
11. Gas exchange in humans  →  11.1. Gas exchange in humans
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6
shows a fetus during the final stage of pregnancy. Q S R The boxes on the left show a letter from . The boxes in the middle show the name of a part shown in . The boxes on the right show the function of each part. Draw one line to link each letter from to its correct name. Draw one line to link each name to its correct function. Draw a total of six lines. letter on name function Q amniotic fluid exchange of nutrients or gases R placenta protects the fetus from damage S vagina receives sperm during sexual intercourse Table 6.1 shows some of the events (A to F) that occur during birth. Table 6.1 A passage through the vagina B breaking of the amniotic sac C delivery of the afterbirth D dilation of the cervix E contraction of the muscle in the uterus wall F tying and cutting the umbilical cord Put the events into the correct sequence by ordering the letters. One has been done for you. B The diet of a woman is very important during pregnancy. State the name of one component of a pregnant woman’s diet that is needed for the formation of bones in the fetus. State the importance of iron in a pregnant woman’s diet. State one source of iron in the diet. State why women are often advised to avoid alcohol consumption during pregnancy.
16. Reproduction  →  16.4. Sexual reproduction in humans
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7
A student investigated the rate of oxygen uptake during aerobic respiration in woodlice. Woodlice are arthropods. State the word equation for aerobic respiration. shows the apparatus the student used. Soda lime absorbs carbon dioxide. When the tap is closed air cannot move into or out of the apparatus. The coloured liquid moves when the tap is closed. 10 9 8 7 6 5 4 3 2 1 0 ruler scale coloured liquid in a narrow tube test-tube soda lime woodlice on a wire platform tap air cm Table 7.1 shows the results of this investigation. Table 7.1 time / minutes position of the coloured liquid on the ruler scale / cm 1.0 2.1 3.1 4.2 5.5 5.9 7.5 Explain why the coloured liquid moves towards the woodlice during the investigation. Suggest why it is important that the temperature of the apparatus did not exceed 40 °C. Respiration releases energy. State two uses of energy in the body of a human.
8. Transport in plants  →  8.3. Transpiration
12. Respiration  →  12.2. Aerobic respiration
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8
shows the pyramid of numbers for a food chain in a forest. goshawk thrush caterpillar not to scale oak tree State the name of the organism in that has the largest number of individuals in the pyramid of numbers. State the name of the secondary consumer in . State the principal source of energy input in a food chain. shows the pyramid of numbers for a food chain in a lake. trout frog insect not to scale aquatic plant The pyramids of numbers in and are different shapes. Explain why they are different. Most of the trout from the lake in were caught by fishermen. State and explain what effect this might have on the populations of frogs and insects. frogs insects Bacteria and fungi obtain energy from dead organic material. Put a tick (✓) in the box that describes bacteria and fungi. carnivores decomposers herbivores producers
19. Organisms and their environment  →  19.2. Food chains and food webs
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