0610_s14_qp_21
A paper of Biology, 0610
Questions:
8
Year:
2014
Paper:
2
Variant:
1
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1
shows five different mammals. They are not drawn to the same scale. A B C E D Use the key to identify the mammals shown in . Complete Table 1.1 by writing the names of the five mammals. Key name of mammal has ears more than half the length of the head has ears less than half the length of the head O. cuniculus go to 2 has fur on tail all one colour has fur on tip of tail a different colour to rest of tail fur go to 3 go to 4 has webbed feet (skin between the toes) does not have webbed feet (no skin between the toes) M. vison M. leucurus has white fur on the end of the tail has black fur on the end of the tail V. vulpes M. erminea Table 1.1 mammal name of mammal A B C D E
1. Characteristics and classification of living organisms  →  1.3. Features of organisms
9. Transport in animals  →  9.1. Circulatory systems
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2
shows the average body mass and the average heart rate of nine mammals. 0.2 0.3 1.0 1.5 5.0 average body mass / kg average heart rate / beats per min dog human buffalo rhinoceros elephant cat rabbit guinea pig rat Name the mammal that has an average body mass of 1300 kg. State the average heart rate of a guinea pig. beats per minute Name the mammal that has an average heart rate of 30 beats per minute. Calculate how many times faster the heart of a rabbit beats than that of a buffalo. Show your working. Describe the relationship between average body mass and average heart rate, shown in Fig. 2.1. When the heart beats, it pumps blood round the body. shows the components of blood as seen through a light microscope. ) * + Y: \ASD\Sciences\Biology\biologyimages\blood\humblood×1000 Name the blood components labelled F, G and H in . State one function for each component. Write your answers in Table 2.1. Table 2.1 label name of blood component one function of the blood component F G H shows a diagram representing part of the human circulatory system. The arrows indicate the direction of blood flow. heart liver alimentary canal kidney On , label the lines that represent: • the aorta; • the hepatic portal vein. Some students carried out an investigation into the effect of exercise on heart rate. Their results are shown in Table 2.2. Table 2.2 average heart rate at rest / beats per min average heart rate after exercise / beats per min Explain why exercise caused the average heart rate to increase.
9. Transport in animals  →  9.2. Heart
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3
Table 3.1 contains six statements about different methods of birth control. Only three of the statements are correct. Read each statement carefully and decide if it is correct. Place a tick (✓) in the box next to each correct statement. Table 3.1 statement about method of birth control correct? A chemical in spermicidal cream kills the sperm. In a vasectomy only one of the sperm ducts of a man needs to be cut so that sperm cannot pass along it. The condom and femidom both work by catching the sperm in a thin rubber bag. The diaphragm is effective in birth control as it prevents the penis entering the vagina. The female contraceptive pill prevents an egg cell being released. The IUD is a device that stops sperm swimming through the cervix. State which method of birth control is effective at preventing the spread of the human immunodeficiency virus (H. Explain why it is effective. Method Explanation The rhythm method is another type of birth control. It is less reliable than other methods. Outline how the rhythm method works. Suggest a reason why the rhythm method is used, even though it is not very reliable.
16. Reproduction  →  16.4. Sexual reproduction in humans
16. Reproduction  →  16.6. Sexually transmitted infections
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4
shows part of the carbon cycle. carbon dioxide in the atmosphere D carbon compounds in grass carbon compounds in zebras A B C Name the processes labelled A, B, C and D in . Write your answers in Table 4.1. Table 4.1 name of process A B C D Name a compound containing carbon: that is found in grass, that is found in zebras. When a zebra dies, the carbon in its body is eventually returned to the atmosphere in the form of carbon dioxide. Explain how this happens. State two human activities that are increasing the amount of carbon dioxide in the atmosphere.
19. Organisms and their environment  →  19.3. Nutrient cycles
6. Plant nutrition  →  6.1. Photosynthesis
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5
shows a section through a leaf. names some structures found in a leaf and states a function of each of these structures. On , draw one straight line between each structure and the function it carries out. structure cuticle stoma palisade cell phloem tissue spongy mesophyll function allows gaseous exchange with surroundings allows diffusion of gases within the leaf waterproofs the leaf transports sucrose out of the leaf produces glucose Xylem vessels transport water into the leaf. State two other functions of xylem vessels. Some of the glucose made in the leaf is changed into another compound and stored by the plant. Name this compound. Some of the structures in the leaf are involved in transpiration. Define transpiration.
6. Plant nutrition  →  6.2. Leaf structure
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6
shows a diagram of the alimentary canal. . / Use the letters on to identify: the colon, the pancreas, the stomach. State one function for each of these parts of the alimentary canal. colon pancreas stomach On draw a line to show where bile is made. Label it X. State the action that bile has on fats in the small intestine. Explain how this action speeds up the digestion of fats. Digested food is absorbed as it passes along the small intestine. Explain how this absorption takes place.
7. Human nutrition  →  7.2. Digestive system
7. Human nutrition  →  7.3. Physical digestion
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8
Name the type of cell division that forms gametes (sperm cells and egg cells). State the difference between the number of chromosomes in gametes and the number of chromosomes in other body cells. The sex of a human is determined by the sex chromosomes, X and Y. State which sex chromosomes are present in a male and in a female. male female Define the term allele. The fur colour in a species of mouse can be black or white. The allele for black fur is dominant to the allele for white fur. shows the cross between a mouse that is homozygous for black fur and a mouse that is homozygous for white fur. parental phenotype: parental genotype: black fur BB white fur bb × × × All the offspring are black and have the genotype Bb. Two of these offspring were mated together. Complete to show the results of this cross. parental phenotype: parental genotype: gametes: offspring genotype: offspring phenotype: black fur black : white × × × + + × ratio: black fur In an investigation, a mouse with black fur and a mouse with white fur were mated several times. A total of 40 offspring were produced. There were 19 offspring with black fur and 21 with white fur. Deduce the genotype of the parent that had black fur. genotype
17. Inheritance  →  17.4. Monohybrid inheritance
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