0610_w15_qp_22
A paper of Biology, 0610
Questions:
8
Year:
2015
Paper:
2
Variant:
2
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1
shows six different insects. A B C D E F not drawn to scale Use the key to identify the insects labelled A, B, E and F. Write your answers in Table 1.1. key description name of insect insect has wings go to 2 insect has no wings go to 3 one pair of wings go to 4 two pairs of wings go to 5 two tail pieces springtail three tail pieces silverfish abdomen is pointed robber fly abdomen is rounded hoverfly antennae are pointed large yellow moth antennae have rounded ends clouded yellow butterfly Table 1.1 insect name of insect A B E F
16. Reproduction  →  16.3. Sexual reproduction in plants
1. Characteristics and classification of living organisms  →  1.3. Features of organisms
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2
shows some capillaries near the skin surface. epidermis capillary with large blood flow capillary with small blood flow State the condition in the body that would cause these capillaries to have a large blood flow. Describe and explain one other response of the body to the condition you have stated in . Explain why mammals increase blood flow to the skin surface. A doctor will often use a thermometer to help in the diagnosis of illness. shows a thermometer and a range of body temperatures. °C resting exercising hyperthermia hypothermia State the temperature at which the body begins to suffer from hypothermia. °C Explain why the body temperature is slightly higher when exercising than when resting.
14. Coordination and response  →  14.4. Homeostasis
9. Transport in animals  →  9.3. Blood vessels
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3
represents the heart, part of the circulatory system and some of the organs supplied by this system. head lungs liver alimentary canal kidneys legs B C A On , draw an arrow on blood vessel C to show the direction of blood flow. Name the blood vessels labelled A, B and C, shown in . A B C On , draw a line to complete the circulation of blood for the alimentary canal. Label this line with the correct name of this blood vessel. Table 3.1 shows some of the characteristics of blood vessels. Complete Table 3.1 by writing: • YES if the characteristic is present • NO if the characteristic is absent. Table 3.1 characteristic blood vessel aorta vena cava capillary thick, elastic wall YES valves present along length NO transports oxygenated blood NO amino acids pass through walls NO shows the heart of a person who has recovered from a mild heart attack as a result of having coronary heart disease. atrium ventricle P R blockage area of dead heart tissue Name the blood vessel labelled R, shown on . Name one substance which could block blood vessel R. Explain why a blockage at point P on is likely to cause a serious, possibly fatal, heart attack.
9. Transport in animals  →  9.2. Heart
9. Transport in animals  →  9.3. Blood vessels
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4
The boxes on the left contain some genetic terms and the boxes on the right contain definitions of these genetic terms. Draw one straight line to join each term with its correct definition. Draw only six lines. term definition genotype having two different alleles of the same gene dominant the physical features of an organism heterozygous the genetic make-up of an organism phenotype an allele that is expressed in a heterozygote haploid a length of DNA which codes for a specific protein gene containing a single set of unpaired chromosomes Define the term mitosis. One role of mitosis is to repair damaged tissues. State two other examples of when mitosis occurs. The number of human male and female babies born is approximately equal. is an incomplete diagram to show the inheritance of the sex chromosomes in humans. Complete by filling in the sex chromosomes of the gametes and children. XX XY mother eggs father sperm parents gametes children The couple in are expecting another child. State the probability that it will be a boy. Write a letter M on to show where meiosis occurs.
17. Inheritance  →  17.4. Monohybrid inheritance
17. Inheritance  →  17.1. Chromosomes, genes and proteins
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6
is a graph which shows the growth of different parts of the human body. age / years growth / percentage of maximum reproductive tissues whole body head Use information from to: state the age at which the head reaches full size years give two age ranges during which the growth rate of the whole body is very rapid from to from to describe and explain the change in the growth of the reproductive tissues between 14 and 20 years of age. The development of the fetus can be affected by a pregnant woman’s lifestyle. State a possible effect on the fetus of a shortage of calcium in the mother’s diet. State a possible effect on the newborn baby if the mother smokes during pregnancy.
16. Reproduction  →  16.4. Sexual reproduction in humans
19. Organisms and their environment  →  19.4. Populations
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7
shows part of the carbon cycle. The boxes represent processes within this cycle. manure heap carbon dioxide in air grass plants urine and faeces stems put on manure heap Complete the carbon cycle shown in by choosing processes from this list. Write the name of a process in each of the boxes on . You may use each word once, more than once or not at all. combustion deamination decomposition denaturation egestion feeding photosynthesis respiration Write the word equation for aerobic respiration. Manure is a source of natural fertiliser which can be used to improve the growth of crops. Explain one way that the overuse of fertilisers can be harmful to the environment. In some parts of the world there is not enough food to feed all of the human population. Farmers sometimes cut down forests to provide more land for growing crops or keeping cattle. This process is called deforestation. Explain how deforestation can be harmful to the environment. There can be a shortage of water in highly-developed countries where water use is very high. shows the water use in one country in Europe. animal farming irrigation home sanitation power generation industry street cleaning Calculate the percentage of water used in irrigation and animal farming. Show your working. % Some water is used to flush waste from domestic toilets. Give one reason why this waste water must be treated before it can be re-used. Boiling foods in water can reduce their nutrient level by removing vitamins. Name the vitamin which is needed to prevent the disease scurvy.
19. Organisms and their environment  →  19.3. Nutrient cycles
20. Human influences on ecosystems  →  20.3. Pollution
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8
shows a structure found in the wall of the small intestine. Name the structure shown in . State one function of this structure. Table 8.1 contains information about the digestion of the three main types of food. Fill in the spaces to complete Table 8.1. Table 8.1 food type enzyme involved in digestion products of digestion starch simple sugar fat protein protease The products of protein digestion are carried away to the liver. State two ways in which the liver may deal with these products of protein digestion.
7. Human nutrition  →  7.3. Physical digestion
7. Human nutrition  →  7.4. Chemical digestion
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