0610_w07_qp_2
A paper of Biology, 0610
Questions:
9
Year:
2007
Paper:
2
Variant:
0
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1
For Examiner's Use Non-living things, such as a truck, have features that seem to be similar to those of living organisms. Choose words from the list of characteristics of living things and match them to the statements about a truck. excretion growth movement nutrition respiration sensitivity A truck needs to have a supply of diesel put into its fuel tank, similar to the need for in animals. When this fuel is burnt exhaust fumes are removed, like the process of in animals. Energy is released when this fuel is burnt. This matches the process of in both animals and plants. This energy is used to turn the wheels of the truck, like the process of in animals.
1. Characteristics and classification of living organisms  →  1.1. Characteristics of living organisms
1. Characteristics and classification of living organisms  →  1.3. Features of organisms
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2
For Examiner's Use shows the mean height of females from birth to 25 years of age. mean height / cm age / years State in which two year period the growth rate of females is most rapid. Table 2.1 lists similar information about males. Table 2.1 age of males / years mean height / cm Plot the data for males on the graph, , using the same axes. After the age of 2, at which two ages are the heights of males and females the same? and For Examiner's Use During the teenage years of both sexes changes happen to their bodies and their behaviour. State in which sex these changes normally occur first. Describe three of these changes that happen in males. 1. 2. 3. Name the hormone that triggers these changes in males. State the name given to this stage of development that happens during the teenage years.
16. Reproduction  →  16.5. Sex hormones in humans
16. Reproduction  →  16.4. Sexual reproduction in humans
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3
For Examiner's Use shows part of the female reproductive system during pregnancy. villi placenta One function of the placenta is to allow food materials to pass from the mother’s blood to that of the fetus. State two other functions of the placenta. 1. 2. The surface of the placenta has a large number of finger-like projections called villi. These extend into the surface of the uterus. Explain the importance of these villi. On mark with an X a place where the mother’s blood and the blood of the fetus are close together. For Examiner's Use The blood supply of the mother and the fetus are separate. Suggest three reasons why this is important for the fetus. 1. 2. 3.
16. Reproduction  →  16.4. Sexual reproduction in humans
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5
For Examiner's Use shows a food web. carnivorous insects herbivorous insects spiders toads and lizards grass rabbits voles stoats foxes kestrels Complete the food chain from this food web. grass foxes Complete each column of Table 5.1 by naming two appropriate organisms from the food web. Some organisms could occur in more than one column. Table 5.1 consumer carnivore herbivore For Examiner's Use The overuse of some pesticides can make the eggs of birds of prey, such as the kestrel, infertile. This may cause a large decrease in the population of kestrels. Predict and explain the possible effects this could have on populations of stoats and rabbits in the food web, . stoats rabbits About 20 years ago a failure at a nuclear plant resulted in the release of radioactive material into the atmosphere. The radioactive material was deposited on grasslands over parts of Europe. Some of the radioactive chemicals got into organisms in the food web, . Not all of these radioactive chemicals taken in by organisms are excreted. Suggest which organism would have accumulated the highest concentration of radioactive chemicals and explain why this would happen. organism explanation One of the radioactive chemicals present was strontium, which behaves very much like calcium in an animal’s body. Suggest where this strontium would be found in high levels in an animal’s body.
19. Organisms and their environment  →  19.2. Food chains and food webs
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6
For Examiner's Use shows a section through a leaf. A B Name the parts of the leaf labelled A and B. A B One function of a leaf is gaseous exchange. Name the process by which gases move in or out of a leaf. On label the stoma. For Examiner's Use Complete Table 6.1 by placing a tick () in the appropriate column to show the movement of gases or vapour through open stomata on a sunny, dry day. Give a reason for each of your answers. Table 6.1 movement of gas or vapour into leaf out of leaf none reason for movement of gas or vapour carbon dioxide oxygen water vapour Suggest how the movement of water vapour might be different if it was raining. The vascular bundle delivers water to replace water lost by the leaf. On name and label the tissue in the vascular bundle that does this.
8. Transport in plants  →  8.3. Transpiration
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8
For Examiner's Use shows a section through the heart. A B C Name the two blood vessels labelled A and B. A B Name valve C and state its function. name function For Examiner's Use shows the volume of oxygenated blood pumped out of the left ventricle per minute when the body is at rest and during exercise. volume of blood pumped by left ventricle / dm3 per minute time period of exercise What is the maximum increase in the volume of blood pumped out of the left ventricle during exercise? Explain the advantages of this increased flow of blood during exercise. For Examiner's Use shows an external view of the heart. coronary artery X If the coronary artery becomes blocked at X, suggest what the effect would be on the heart. State two ways in which the risk of such a blockage could be reduced. 1. 2.
9. Transport in animals  →  9.2. Heart
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9
For Examiner's Use shows the digestive system. A G B C D E F For Examiner's Use Complete the following statements by selecting the appropriate letter from . Egestion happens at Pancreatic juice is formed at Villi are present at Bile is stored at The stomach produces hydrochloric acid as well as enzymes. State two functions of this acid in the stomach. Describe the roles of the liver in digestion and assimilation.
7. Human nutrition  →  7.4. Chemical digestion
7. Human nutrition  →  7.2. Digestive system
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