0610_w20_qp_33
A paper of Biology, 0610
Questions:
7
Year:
2020
Paper:
3
Variant:
3
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1
is a photograph of a strawberry plant growing in a glasshouse. It photosynthesises and produces fruit. State the names of the products of photosynthesis. State the name of the structure in plant cells which contains chlorophyll. Scientists investigated the effect of carbon dioxide concentration on the rate of photosynthesis of strawberry plants grown in a glasshouse. is a graph of the results of the investigation. concentration of carbon dioxide rate of photosynthesis Describe the trend shown in the graph in . The investigation on the effect of carbon dioxide concentration on the rate of photosynthesis was repeated at a higher light intensity. Sketch, on the graph in , a second line to show the expected results of this second investigation. Place ticks (3) in the correct boxes to identify three substances or conditions that would be supplied to the strawberry plants to maximise photosynthesis. glucose lipase magnesium ions warm temperature water very low light intensity Plants are an important part of the water cycle. is a diagram of the water cycle. V S U T Table 1.1 shows the letters from , and descriptions of the stages in the water cycle. Complete Table 1.1 by writing the name of each stage in the correct boxes. Table 1.1 letter from name of stage description of stage S loss of water vapour from plant leaves T heat from the Sun causes liquid water to change into water vapour U water vapour in the air changes to liquid water in the clouds V the liquid water falls to the ground
6. Plant nutrition  →  6.1. Photosynthesis
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2
is a diagram of the human male reproductive system. N M L K J The boxes on the left show the letters from . The boxes in the middle show the names of the parts 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 ten lines. penis prostate gland scrotum sperm duct testis name carries sperm cells away from the testis delivers sperm into the vagina holds the testes and keeps them cool makes the fluid that sperm cells swim in where sperm are made function J K L M N letter from State two barrier methods of birth control.
16. Reproduction  →  16.4. Sexual reproduction in humans
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3
is a photograph of a butterfly. Butterflies are arthropods. State the group of arthropods that the butterfly belongs to and describe one feature visible in that is characteristic of this group. group feature Many butterfly species are endangered. shows the size of the area in which five species of butterfly were found in 1992 and 2017. 10 000 20 000 30 000 40 000 50 000 area / km2 butterfly species clouded yellow duke of burgundy high brown fritillary red admiral silver- studded blue 60 000 70 000 80 000 90 000 100 000 Key: State the name of one species that was found in a larger area in 2017 than in 1992. Use the information in to suggest the name of the butterfly species that is the most endangered. Give a reason for your choice. name reason Describe how endangered species such as butterflies can be conserved.
20. Human influences on ecosystems  →  20.4. Conservation
20. Human influences on ecosystems  →  20.2. Habitat destruction
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4
Define the term homeostasis. The skin is an important organ involved in temperature regulation in mammals. is a diagram of a cross‑section of mammalian skin. E F A B C D State the names of structures A, B, C and D on . A B C D Describe how the structures labelled C, E and F in reduce heat loss in cold conditions. Complete the sentences about maintenance of body temperature using the words and phrases from the list. Each word or phrase may be used once, more than once or not at all. blood brain condenses evaporates neurones receptors skin sweat temperature water content Control of body temperature is coordinated by the . There are temperature that sense the temperature of the . When the temperature gets too hot, glands release onto the surface of the skin and the water in it reducing body temperature.
14. Coordination and response  →  14.4. Homeostasis
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5
Table 5.1 shows some statements about arteries, capillaries and veins. Place ticks (3) in the boxes to show which statements are correct for arteries, capillaries and veins. One has been done for you. Table 5.1 statements arteries capillaries veins carry blood away from the heart supply cells with nutrients and remove waste products return blood to the heart have a thick wall containing muscle and elastic tissue have a thin wall containing muscle and elastic tissue have a very thin wall with no muscle or elastic tissue State one other way in which the structure of a vein is different from an artery. Oxygen moves from the blood into body cells. Carbon dioxide moves from body cells into the blood. State the name of the process in a cell that uses oxygen and releases carbon dioxide. is a drawing representing the movement of molecules into and out of an animal cell. The number of dots represent the concentrations of molecules inside and outside the cell. The arrows show the direction of movement of the molecules. W X Y Z State the letterthat represent the movement of: molecules by active transport molecules by diffusion
9. Transport in animals  →  9.3. Blood vessels
9. Transport in animals  →  9.4. Blood
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6
The box on the left shows the beginning of a sentence. The boxes on the right show some sentence endings. Draw two straight lines from ‘Excretion’ to the boxes on the right to make two correct sentences. Excretion is the removal of excess substances from an organism. is the removal of toxic materials from an organism. is the taking in of materials for energy and growth. is the movement of digested food molecules into cells. is the passing out of undigested food from an organism. The kidney filters the blood and produces a liquid called urine. State three substances that are found in the urine of a healthy person. is a diagram of part of the human excretory system and associated blood vessels. P R Q Key: direction of blood flow State the names of parts P, Q and R in . P Q R The volume and concentration of urine produced is affected by changes in water consumption, temperature and exercise levels. Table 6.1 shows three different conditions. Complete Table 6.1 by writing increases or decreases in the boxes to show the effect of each condition on the volume and concentration of urine produced. Table 6.1 condition volume of urine concentration of urine increase in water consumption increase in temperature increase in exercise level Protein can be broken down into amino acids. List four chemical elements that are always found in protein. State the name of the organ in the human body that breaks down excess amino acids. shows some chemical reactions that are catalysed by enzymes. The enzyme catalysing the reaction is shown on the arrow. Complete by filling in the names of the four missing molecules. amylase starch protein amino acids lipase fats and
13. Excretion in humans  →  13.1. Excretion in humans
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7
Tobacco smoke damages health and can cause many different diseases. Table 7.1 shows the number of deaths, caused by smoking, for three different diseases. Table 7.1 disease number of deaths caused by smoking chronic obstructive pulmonary disease (COPD) 13 200 coronary heart disease (CHD) 12 000 lung cancer 22 800 Calculate the percentage of deaths that were caused by COPD. Space for working. % is a drawing of a cigarette showing some of the substances in tobacco smoke. tobacco smoke taken into the lungs carbon monoxide X is addictive tar particulates Describe the effect of carbon monoxide and tar on the gas exchange system. carbon monoxide tar State the name of component X shown in . Pregnant women are advised not to smoke as the harmful substances in tobacco can be transferred from the woman to her fetus. Describe how the harmful substances are transferred from the mother to the fetus. Smoking is a risk factor for coronary heart disease. State three other risk factors for coronary heart disease.
9. Transport in animals  →  9.2. Heart
16. Reproduction  →  16.4. Sexual reproduction in humans
20. Human influences on ecosystems  →  20.3. Pollution
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